| Diagnosis and Testing Starting with a symptom, the mechanic is provided with diagnostic information from the Symptom Chart. In addition, the diagnosis direction is indicated and possibly the component causing the fault is named. The Symptom Charts are divided into two categories: the electrical routines, indicated by 200 series numbers, and hydraulic/mechanical routines, indicated by 300 series numbers. In the electrical routines, the electrical components are listed. The hydraulic/mechanical routines list the hydraulic or mechanical components which could possibly cause the symptom described. Diagnosis by Symptom Chart Directions - Consult the symptom chart table and select the symptom/concern.
- Move on to the diagnostic procedures given in the symptom chart.
- Always begin diagnosis of a symptom by using the following:
- Verification of condition
- Test procedures according to details in the table
- If indicated, start with the electrical routine. Follow the instructions given under Reference/Action. If required, always perform the tests using the Diagnostic Tool. Never skip tests. Carry out the necessary repairs. If the concern is still present after electrical diagnosis, proceed to the hydraulic/mechanical routine listed.
NOTE:Make sure that all the electrical components are working correctly before proceeding to the hydraulic/mechanical routine listed. - The hydraulic/mechanical routines list the possible hydraulic or mechanical components which could possibly cause the concern described. These components are listed in the removal sequence and by their likelihood of being the cause. All components listed must be inspected so that proper servicing is guaranteed.
Symptom Chart | Title | Electrical* | Hydraulic/ Mechanical | | Engagement Concerns | | | | No Forward | 1) | 301 | | No Reverse | 202 | 302 | | Harsh Reverse or Forward Engagement | 203 | 303 | | Delayed Engagement of Forward or Reverse | 1) | 305 | | No Forward Engagement or Reverse | 1) | 307 | | Shift Concerns | | | | Some or All Shifts Missing | 210 | 310 | | Shift Timing - Early/Late | 211 | 311 | | Shift Timing - Erratic/Surging | 212 | 312 | | Feel - Soft/Slipping | 213 | 313 | | Feel - Harsh | 214 | 314 | | No 1st Gear, Engages in Higher Gear | 215 | 315 | | No Manual 1st Gear | 216 | 316 | | 1-2 shift (automatic) | 220 | 320 | | 2-3 shift (automatic) | 221 | 321 | | 3-4 shift (automatic) | 222 | 322 | | Only 1-2 shift soft/slipping (automatic) | 226 | 326 | | Only 2-3 shift soft/slipping (automatic) | 227 | 327 | | Only 3-4 shift soft/slipping (automatic) | 228 | 328 | | Only 4-3 shift soft/slipping (automatic) | 229 | 329 | | Only 3-2 shift soft/slipping (automatic) | 230 | 330 | | Only 2-1 shift soft/slipping (automatic) | 231 | 331 | | Only 1-2 shift abrupt (automatic) | 232 | 332 | | Only 2-3 shift abrupt (automatic) | 233 | 333 | | Only 3-4 shift abrupt (automatic) | 234 | 334 | | Only 4-3 shift abrupt (automatic) | 235 | 335 | | Only 3-2 shift abrupt (automatic) | 236 | 336 | | Torque Converter Lock-Up Clutch | | | | No Apply | 240 | 340 | | Always Applied/Stalls Vehicle | 241 | 341 | | Torque Converter Clutch Concern - Cycling/Shudder/Chatter | 242 | 342 | | Other Shift Concerns | | | | Shift Lever Effort High | 1) | 351 | | External Leaks | 1) | 352 | | Poor Vehicle Performance | 253 | 353 | | Noise/Vibration - Forward/Reverse | 1) | 354 | | Engine will Not Crank | 255 | 355 | | No PARK Range | 1) | 356 | | Transmission Overheating | 257 | 357 | | No Engine Braking in Manual first Position | 258 | 358 | | No Engine Braking in DRIVE (O/D switch on) or Selector Lever Position "2". | 259 | 359 | | Vehicle Movement with Gear Selector in the "N" Position | 1) | 362 | | Reference: Pressure Chart | | 401 | | Reference Table: Clutch/Band Application | | 601 | | Reference Table: Solenoid Application Chart | | 701 | Perform electrical routine first. 1) not caused by an electrical component Routines ENGAGEMENT CONCERN: NO FORWARD | 301 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Internal or External Shift Linkages | | | - Damaged, out of adjustment, incorrectly assembled | Check and repair if necessary. Ensure correct adjustment of the gear shift; refer to the adjustment procedure. After completing the repair, make sure that the transmission range sensor (TR sensor) is correctly adjusted. | | Pump Assembly | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | Damaged gaskets | - Check for damage. Renew as necessary. | | - Porosity/crossleaks and/or ball plug missing or leaking, or a plugged hole | - Check for porosity and leaks. Renew as necessary. | | - Pump hub seal ring, no 3 or no 4, damaged | - Check for damage and repair as necessary. | | Main Control Valve Body Assembly | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Gaskets damaged or leaking | - Check for damage and repair as necessary. | | - Pressure plate damaged or leaking | - Check for damage and repair as necessary. | | - Separator plates damaged | - Check for damage and repair as necessary. | | - Hydraulic passages damaged | - Check for damage and repair as necessary. | | - Main regulator valve stuck, damaged or incorrectly assembled | - Check for damage and repair as necessary. | | - Forward accumulator leaking | - Check for damage and repair as necessary. | | Forward Clutch and Coast Clutch Assembly | | | - Seals or pistons damaged | - Perform Air Pressure Test. | | | - Check for damage and repair as necessary. | | - Forward clutch return springs damaged | - Check for damage and repair as necessary. | | - Ball check valve damaged | - Check for incorrect positioning, poor seating, damage. Renew the piston if necessary. | | - Friction plates severely damaged or worn | - Check for excessive wear or damage and repair as necessary. | | - Forward/coast/direct clutch cylinder damaged, leaking, incorrectly assembled or sticking | - Check for damage and repair as necessary. | | - Cylinder to hub weld broken or splines damaged | - Check for damage and repair as necessary. | | Clutch - Low One-Way | | | - Worn, damaged, incorrectly assembled | - Check for damage and repair as necessary. | | Forward One-Way Clutch | | | - Worn, damaged, incorrectly assembled | - Check for damage and repair as necessary. | | Low-Intermediate Carrier | | | - Damaged, incorrectly assembled | - Check for damage and repair as necessary. | ENGAGEMENT CONCERN: NO REVERSE | 202 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring looms, PCM, solenoid valve 1 (SS1) activated, transmission range sensor (TR sensor) | - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | ENGAGEMENT CONCERN: NO REVERSE | 302 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | External Shift Linkage | | | - Damaged, out of adjustment | - Check and repair as necessary. Ensure correct adjustment of the gear shift; refer to the adjustment procedure. After completing the repair, make sure that the transmission range sensor (TR sensor) is correctly adjusted. | | Incorrect pressures | | | - Low line pressure | - Measure the operating pressure using a pressure connection at the mainline pressure blanking plug. Test the operating pressure and perform a stall speed test; for data refer to reference table no. 401, transmission fluid pressures. If the operating pressure is low, check the following components which may be the cause: Valve body, transmission fluid pump, reverse clutch, low/reverse clutch. | | Internal Shift Linkage | | | - Damaged, out of adjustment | - Check and repair as necessary. Make sure the gear shift is correctly adjusted; refer to Adjustment. After completing the repair, make sure that the transmission range sensor (TR sensor) is correctly adjusted. | | Main Controls | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Gasket damaged | - Check for damage and repair as necessary. | | - 1-2 shift valve, SS1, main regulator valve, low/reverse modulator valve, low/reverse accumulator piston, pressure plate damaged, missing, stuck, incorrectly assembled | - Check for damage and repair as necessary. | | - Separator plates damaged | - Check for damage and repair as necessary. | | - Hydraulic passages damaged | - Check for damage and repair as necessary. | | Pump Assembly | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Gasket damaged | - Check for damage. Renew as necessary. | | - Porosity/crossleaks/ball plug missing or leaking, plugged hole | - Renew pump assembly. | | - Pump hub seal rings no. 6 or no. 7 damaged | - Check for damage and repair as necessary. | | Clutch - Reverse | | | - Seals or pistons damaged | - Perform Air Pressure Test. | | - Ball check valve damaged | - Check for damage and repair as necessary. | | - Friction plates worn, severely damaged or incorrectly assembled | - Check for damage and repair as necessary. | | - Piston return spring damaged | - Check for damage and repair as necessary. | | - Reverse clutch hub to forward/coast/direct hub splines damaged | - Check for damage and repair as necessary. | | Low/Reverse Clutch Assembly | | | - Seals or piston damaged | - Perform Air Pressure Test. | | - Friction plates worn or severely damaged | - Check for damage and repair as necessary. | | - Piston return spring damaged | - Check for damage and repair as necessary. | | - Waved washer missing | - Check for damage and repair as necessary. | | - Piston bore damaged | - Check for damage and repair as necessary. | | Forward/Coast/Direct Clutch Cylinder | | | - Reverse seal rings damaged, missing, incorrectly assembled | - Check for damage and repair as necessary. | | Case | - Perform Air Pressure Test. | | - Reverse clutch supply lines at low /reverse clutch heavily leaking or porous. | - Perform Air Pressure Test. | | | - Check for damage and repair as necessary. | | Reverse/Overdrive Gear Set | | | - Damaged | - Check for damage and repair as necessary. | ENGAGEMENT CONCERN: HARSH REVERSE OR FORWARD | 203 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | Electrical inputs/outputs, vehicle wiring looms, PCM, mainline pressure control (EPC) solenoid valve, transmission fluid temperature (TFT) sensor | - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | ENGAGEMENT CONCERN: HARSH REVERSE OR FORWARD | 303 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Fluid | | | - Level | - Adjust fluid to correct level. | | - Condition | - Inspect; refer to Transmission Fluid Condition Check. | | CV Joints/Front axle driveshaft and Joint | | | - Splines damaged | - Check for damage. Repair where necessary. | | Powertrain bearing | | | - Loose, broken, missing or misaligned | - Check the bearing and repair as necessary. | | - Powertrain touching other vehicle components | - Check for contact and resolve as necessary. | | External Shift Linkage | | | - Damaged, out of alignment | - Check and repair as necessary. Ensure correct adjustment of the gear shift; refer to the adjustment procedure. After completing the repair, make sure that the transmission range sensor (TR sensor) is correctly adjusted; refer to the procedure for adjustment. | | Incorrect pressures | | | - Incorrect line pressure | - Measure the operating pressure using a pressure connection at the mainline pressure blanking plug. Test the operating pressure and perform a stall speed test; for data refer to reference table no. 401, transmission fluid pressures. If the operating pressure is high, test the engagement at the lowest operating pressure using the transmission testing equipment. If the operating pressure remains high, check the following components: Valve body | | Internal Shift Linkages | | | - Damaged, out of adjustment | - Check and repair as necessary. Ensure correct adjustment of the gear shift; refer to the adjustment procedure. After completing the repair, make sure that the transmission range sensor (TR sensor) is correctly adjusted; refer to the procedure during adjustment. | | Fluid Filter and Seal Assembly | | | - Filter/seal damaged, plugged | - Renew filter and seal assembly. | | - Recirculation seal damaged, blocked or out of position | - Renew recirculation seal. | | Main Controls | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Gasket damaged | - Check for damage and repair as necessary. | | - Low/reverse accumulator piston and spring (reverse), main regulator valve, forward accumulator piston and spring incorrectly assembled, stuck or damaged | - Check for damage and repair as necessary. | | - Mainline pressure solenoid (EPC) stuck or damaged | - Check for damage or contamination. Operate the solenoid valve using the transmission testing equipment, repair as necessary. | | Forward Clutch Assembly (Forward Only) | | | - Forward clutch housing damaged | - Perform Air Pressure Test. | | | - Check for damage and repair as necessary. | | - Piston bore damaged | - Check for damage and repair as necessary. | | - Friction plates damaged, worn | - Check for damage and repair as necessary. | | - Forward clutch return spring damaged or missing | - Check for damage and repair as necessary. | | - Ball check damaged | - Check for damage and repair as necessary. | | - Piston or seal damaged | - Check for damage and repair as necessary. | | Reverse Clutch Assembly (Reverse Only) | | | - Seal or piston damaged | - Perform Air Pressure Test. | | | - Check for damage and repair as necessary. | | - Reverse piston damaged | - Check for damage and repair as necessary. | | - Friction plates damaged, worn, incorrectly assembled | - Check for damage and repair as necessary. | | - Return spring assembly damaged, worn | - Check for damage and repair as necessary. | | - Ball check damaged, missing | - Check for damage and repair as necessary. | | Low/Reverse Clutch Assembly (Reverse Only) | | | - Seals or reverse clutch piston damaged | - Perform Air Pressure Test. | | | - Check for damage and repair as necessary. | | - Waved washer damaged | - Check for damage and repair as necessary. | | - Friction plates damaged, worn, incorrectly assembled | - Check for damage and repair as necessary. | | - Return spring assembly damaged, worn | - Check for damage and repair as necessary. | | - Check ball damaged, missing | - Check for damage and repair as necessary. | | Direct Clutch Assembly (Reverse Only) | | | - Friction plates severely damaged | - Perform Air Pressure Test. | | | - Check for damage and repair as necessary. | ENGAGEMENT CONCERN: DELAYED/SOFT REVERSE OR FORWARD | 305 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Automatic transmission fluid | | | - Not filled to correct level | - Adjust fluid to correct level. | | - Condition | - Inspect; refer to Preliminary Inspection, Check Fluid Level and Condition. | | External Shift Linkages | | | - Damaged, incorrectly adjusted or incorrectly assembled | - Check and repair as necessary. Ensure correct adjustment of the gear shift; refer to the adjustment procedure. After completing the repair, make sure that the transmission range sensor (TR sensor) is correctly adjusted; refer to Automatic Transmission, Assembly. | | Incorrect pressures | | | - Low line pressure | - Measure the operating pressure using a pressure connection at the mainline pressure blanking plug. Test the operating pressure and perform a stall speed test; for data refer to reference table no. 401, transmission fluid pressures. If the operating pressure is low, check the following components which may be the cause: Valve body, transmission fluid pump, clutches, transmission fluid filter and seal, recirculation sealing ring. | | Internal Shift Linkages | | | - Damaged, out of adjustment or incorrectly assembled | - Check and repair as necessary. Ensure correct adjustment of the gear shift; refer to the adjustment procedure. After completing the repair, make sure that the transmission range sensor (TR sensor) is correctly adjusted; refer to Transmission, Assembly. | | Pump Assembly | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | Damaged gaskets | - Check for damage. Renew as necessary. | | - Porosity/cross leaks/ball plug missing or leaking, or passage blockage | - Renew pump assembly. | | - Damaged oil seals: nos. 3 or 4 (forwards) or nos. 6 or 7 (reverse) - oil pump hub | - Check for damage and repair as necessary. | | - Pump gear/pocket damaged | - Check for damage and repair as necessary. | | Damaged separator plate | - Check for damage and repair as necessary. | | Fluid Filter and Seal Assembly | | | - Filter/seal damaged, plugged | - Renew filter and seal assembly. | | - Recirculation seal damaged or out of position | - Renew/reseat recirculation seal. | | Main Controls | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | Damaged gaskets | - Check for damage. Renew as necessary. | | - Manual shift valve, main regulator valve, modulator valve for low /reverse gear stuck, damaged or incorrectly assembled | - Check for damage and repair as necessary. | | - Separator plates damaged | - Check for damage and repair as necessary. | | - Pressure plate/gasket leaks, damaged, incorrectly installed | - Check for damage and repair as necessary. | | Low/Reverse Clutch Assembly (Reverse Only) | | | - Piston or seals damaged | - Perform Air Pressure Test. | | | - Check for damage and repair as necessary. | | - Friction plates damaged, worn | - Check for damage and repair as necessary. | | - Return spring damaged | - Check for damage and repair as necessary. | | - Piston bore damaged | - Check for damage and repair as necessary. | | - Excessive clutch pack end clearance | - Check for damage and repair as necessary. | | Reverse Clutch Assembly (Reverse Only) | | | - Seals or piston damaged | - Perform Air Pressure Test. | | | - Check for damage and repair as necessary. | | - Check ball damaged | - Check for damage and repair as necessary. | | - Friction plates damaged, worn | - Check for damage and repair as necessary. | | - Return spring worn, damaged | - Check for damage and repair as necessary. | | - Piston bore damaged | - Check for damage and repair as necessary. | | - Excessive clutch pack end clearance | - Check for damage and repair as necessary. | | Forward Clutch Assembly (Forward Only) | | | - Seals or piston damaged | - Perform Air Pressure Test. | | | - Check for damage and repair as necessary. | | - Ball check damaged, missing or not seating correctly | - Check for damage and repair as necessary. | | - Friction plates damaged, worn or excessive end clearance | - Check for damage and repair as necessary. | | Forward/Coast/Direct Clutch Cylinder | | | - Reverse seal ring damaged or missing | - Check for damage and repair as necessary. | | - Cylinder damaged or leaking | - Check for damage and repair as necessary. | ENGAGEMENT CONCERN: NO FORWARD AND NO REVERSE | 307 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Fluid | | | - Not filled to correct level | - Adjust fluid to correct level. | | External Shift Linkages | | | - Damaged, out of adjustment or incorrectly assembled | - Check and repair as necessary. Ensure correct adjustment of the gear shift; refer to the adjustment procedure. After completing the repair, make sure that the transmission range sensor (TR sensor) is correctly adjusted; refer to Transmission, Assembly. | | Incorrect pressures | | | - Low/no line pressure | - Measure the operating pressure using a pressure connection at the mainline pressure blanking plug. Perform the operating pressure test and the stall speed test. For data refer to reference table no. 401, Transmission Fluid Pressures. If the operating pressure is low, check the following components which may be the cause: Transmission fluid filter and gasket, valve body, transmission fluid pump. If OK continue with the turbine shaft. | | Internal Shift Linkages | | | - Damaged, out of adjustment or incorrectly assembled | - Check and repair as necessary. Ensure correct adjustment of the gear shift; refer to the adjustment procedure. After completing the repair, make sure that the transmission range sensor (TR sensor) is correctly adjusted; refer to Automatic Transmission, Assembly. | | Pump Assembly | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Gasket damaged, missing | - Check for damage. Renew as necessary. | | - Porosity/cross leaks or passage(s) blocked | - Check for porosity, leaks and blockages. Renew the pump if necessary. | | - Pump hub seal ring missing | - Check for damage and repair as necessary. | | - Pump shaft broken, damaged | - Check for damage and repair as necessary. | | Fluid Filter and Seal Assembly | | | - Filter/seal damaged, blocked, or missing | - Renew filter and seal assembly. | | - Recirculation seal damaged or out of position | - Renew/reseat recirculation seal. | | Main Controls | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | Damaged gaskets | - Check for damage. Renew as necessary. | | - Pressure plate damaged or missing | - Check for damage and repair as necessary. | | - Main regulator valve, manual valve stuck, damaged, plugged, missing, "Z" link not connected | - Check for damage and repair as necessary. | | Engine drive plate (starter ring gear) | | | - Damaged, broken | - Check for damage and repair as necessary. | | Torque Converter | | | - Pump drive shaft insert damaged | - Check for damage and repair as necessary. | | - Studs broken or damaged | - Check for damage and repair as necessary. | | - Splines damaged | - Check for damage and repair as necessary. | | - Internal blades damaged, broken | - Check the torque converter. If damaged, renew. | | Turbine Shaft to Forward/Coast/Direct Clutch Cylinder Housing | | | - Splines damaged | - Check for damage. Repair where necessary. | | Chain and Sprocket Assembly | | | - Broken, damaged | - Check for damage and repair as necessary. | | Park Mechanism | | | - Parking pawl return spring damaged, missing incorrectly installed | - Check for damage and repair as necessary. | | Front Wheel Drive Shafts and Joints | | | - Broken or splines damaged | - Check for damage and repair as necessary. | | Final Drive and Differential Assembly | | | - Splines damaged | - Check for damage and repair as necessary. | | - Gearset damaged | - Check for damage and repair as necessary. | | Planetary Gearset | | | - Gear teeth, carriers, splines damaged, or broken | - Check for damage and repair as necessary. | SHIFT CONCERNS: SOME OR ALL SHIFTS MISSING | 210 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs. vehicle wiring looms, PCM, shift valves, transmission range sensor (TR sensor), throttle position sensor (TPS), VSS, TCS | - Perform Shift Point Road Test; refer to Road Test Vehicle. | | | - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | SHIFT CONCERNS: SOME OR ALL SHIFTS MISSING | 310 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Fluid | | | Internal and External Shift Linkages | - Check and repair as necessary. Ensure correct adjustment of the gear shift; refer to the adjustment procedure. After completing the repair, make sure that the transmission range sensor (TR sensor) is correctly adjusted; refer to Automatic Transmission, Assembly. | | Speedometer drive pinion | - Check for damage and repair as necessary. | | Go to Reference/Action to diagnose specific missing shifts | | SHIFT CONCERNS: SHIFT TIMING - EARLY/LATE | 211 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs. vehicle wiring looms, PCM, shift valves, transmission range sensor (TR sensor), throttle position sensor (TPS), VSS, TCS | - Perform Shift Point Road Test; refer to Road Testing Vehicle. | | | - perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | SHIFT CONCERNS: SHIFT TIMING - EARLY/LATE | 311 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Other | | | - Tire size change | - Refer to the specification plate on the door panel and make sure that the original vehicle equipment is installed. A change of tire size or the speedometer drive pinion affects the shift timing. | | - Speedometer gear broken or otherwise incorrect | - Check for damage and repair as necessary. | | - Speedometer worm gear damaged | - Check for damage and repair as necessary. | SHIFT CONCERNS: TIMING - ERRATIC/HUNTING | 212 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Engine concerns | - Refer to the specification plate on the door panel and make sure that the original vehicle equipment is installed. A change of try size or the speedometer drive pinion affects the shift timing. | | | - Check for damage and repair as necessary. | | - Electrical inputs/outputs, vehicle wiring looms, PCM, shift valves, transmission range sensor (TR-Sensor), brake on/off switch (BOO), torque converter clutch solenoid valve (TCC), vehicle speed sensor (VSS), throttle position sensor (TP), turbine shaft speed sensor (TSS), electronic pressure control solenoid (EPC), 3-2 shift/coast clutch solenoid (CCS). | - Check for damage and repair as necessary. | SHIFT CONCERNS: TIMING - ERRATIC/HUNTING | 312 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Automatic transmission fluid | - Adjust fluid to correct level. | | - Not filled to correct level | - Adjust fluid to correct level. | | - Condition | - Inspect; refer to Transmission Fluid Condition Check. | | Speedometer drive pinion | | | - Speedometer worm gear damaged | - Check for damage and repair as necessary. | | - Speedometer drive pinion damaged | - Check for damage and repair as necessary. | | Main Control | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | Damaged gaskets | - Check for damage. Renew as necessary. | | - 3-2 timing valve, 2nd gear regulator valve, 2-4 accumulator, servo release shuttle valve, 3-2 control valve stuck, damaged, incorrectly installed | - Check for damage and repair as necessary. | | - Solenoid screen blocked | -Clean or renew screen. | | Separator plates damaged, blocked | - Check for damage and repair as necessary. | | - Pressure plate/gasket damaged | - Check for damage and repair as necessary. | | Diagnosis of specific shift quality concerns in accordance with adjacent diagnostic procedures | | | - Shift Concern: No 1-2 Shift | - Routine 220/320. | | - Shift Concern: No 2-3 Shift | - Routine 221/321. | | - Shift Concern: No 3-4 Shift | - Routine 222/322. | | - Shift Concern: Soft/Slip 1-2 Shift | - Routine 226/326. | | - Shift Concern: Soft/Slip 2-3 Shift | - Routine 227/327. | | - Shift Concern: Soft/Slip 3-4 Shift | - Routine 228/328. | | - Shift Concern: Soft/Slip 4-3 Shift | - Routine 229/329. | | - Shift Concern: Soft/Slip 3-2 Shift | - Routine 230/330. | | - Shift Concern: Soft/Slip 2-1 Shift | - Routine 231/331. | | - Shift Concern: Harsh 1-2 Shift | - Routine 232/332. | | - Shift Concern: Harsh 2-3 Shift | - Routine 233/333. | | - Shift Concern: Harsh 3-4 Shift | - Routine 234/334. | | - Shift Concern: Harsh 4-3 Shift | - Routine 235/335. | | - Shift Concern: Harsh 3-2 Shift | - Routine 236/336. | Feel - Soft/Slipping | 213 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring harnesses, PCM, electronic pressure control solenoid (EPC), transmission fluid temperature (TFT) sensor, throttle position sensor (TPS), MAF sensor. | - Perform Shift Point Road Test; refer to Road Testing Vehicle. | | | - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | Feel - Soft/Slipping | 313 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Automatic transmission fluid | | | - Not filled to correct level | - Adjust fluid to correct level. | | - Condition | - Inspect; refer to Transmission Fluid Condition Check. | | External Shift Linkage | | | - Damaged, out of adjustment | - Check and repair as necessary. Ensure correct adjustment of the gear shift; refer to the adjustment procedure. After completing the repair, make sure that the transmission range sensor (TR sensor) is correctly adjusted; refer to Automatic Transmission, Assembly. | | Incorrect pressures | | | - Low line pressure | - Measure the operating pressures using a pressure connection at the mainline pressure blanking plug. Test the operating pressure; for data refer to reference table no. 401, transmission fluid pressures. If the operating pressures are low or if all shifts are soft or slipping, check the following components: valve body, transmission fluid pump, transmission fluid filter/seal. If the pressures are OK and only one particular shift is soft/slipping, refer to the appropriate routine(s) for additional diagnosis. | | | - Shift 1-2, Routine 226/326. | | | - Shift 2-3, Routine 227/327. | | | - Shift 3-4, Routine 228/328. | | | - Shift 4-3, Routine 229/329. | | | - Shift 3-2, Routine 230/330. | | | - Shift 2-1, Routine 231/331. | | Internal Shift Controls | | | - Damaged, out of adjustment or incorrectly assembled | - Check and repair as necessary. Ensure correct adjustment of the gear shift; refer to the adjustment procedure. After completing the repair, make sure that the transmission range sensor (TR sensor) is correctly adjusted; refer to Automatic Transmission, Assembly. | | Main Controls | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | Damaged gaskets | - Inspect gaskets and renew as required. | | - Main regulator valve, system pressure modulator valve stuck, damage or incorrectly installed or springs missing, tangled or damaged | - Check for damage and repair as necessary. | | - EPC solenoid stuck or damaged | - Check for damage or contamination. Operate the solenoid valve using the transmission testing equipment, repair as necessary. | | Separator plates damaged, blocked | - Check for damage and repair as necessary. | | - Pressure plate/gasket damaged or missing | - Check for damage and repair as necessary. | | Pump Assembly | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | Damaged gaskets | - Check for damage and repair as necessary. | | - Porosity/cross-leaks | - Check for damage and repair as necessary. | | Fluid Filter/Seal Assembly | | | - Filter/seal damaged, blocked or missing | - Renew filter and seal assembly. | | - Recirculation seal damaged or out of position | - Renew recirculation seal. | GEARSHIFT: ABRUPT | 214 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring looms, PCM, electronic pressure control solenoid (EPC), transmission fluid temperature sensor (TFT), torque converter speed sensor (TSS), throttle position sensor (TP), vehicle speed sensor (VSS), mass air flow sensor (MAF), torque converter lock-up clutch solenoid (TCC), transmission range sensor (TR-Sensor), 3-2 shift/coast clutch solenoid (CCS) | - Perform torque converter lock-up clutch operation test; refer to Road Test Vehicle. | | | - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | GEARSHIFT: ABRUPT | 314 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Automatic transmission fluid | | | - Not filled to correct level | - Adjust fluid to correct level. | | - Condition | - Inspect; refer to Check Fluid Level and Condition. | | CV Joint/Front axle driveshaft and Joints | | | - Damaged, loose, splines damaged | - Check for damage and repair as necessary. | | Powertrain bearing | | | - Damaged, loose, missing | - Check for damage and repair as necessary. | | Incorrect pressures | | | - High line pressure | - Measure the operating pressure using a pressure connection at the mainline pressure blanking plug. Test the operating pressure and perform a stall speed test; for data refer to reference table no. 401, transmission fluid pressures. If the operating pressures are high or if all the shifts are harsh, continue with the test of the valve body. | | | - If pressures are OK and only a specific shift is harsh, refer to the appropriate shift routine for additional diagnosis. | | | - Shift 1-2, Routine 232/332. | | | - Shift 2-3, Routine 233/333. | | | - Shift 3-4, Routine 234/334. | | | - Shift 4-3, Routine 235/335. | | | - Shift 3-2, Routine 236/336. | | | - Shift 2-1, Routine 237/337. | | Main Controls | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | Damaged gaskets | - Check for damage and repair as necessary. | | - Main regulator valve, bypass valve or the line modulator valve is sticking, damaged or incorrectly assembled. springs caught, missing, damaged | - Check for damage and repair as necessary. | | - EPC solenoid stuck or damaged | - Check for damage or contamination. Operate the solenoid valve using the transmission testing equipment, repair as necessary. | | - Hydraulic passages damaged | - Check for damage and repair as necessary. | | - Separator plate damaged, blocked | - Check for damage and repair as necessary. | | Torque Converter Assembly | NOTE: If the TCC is engaged during shifts: | | - Piston damaged | - Check for damage and repair as necessary. | | - Pump hub seal No. 1 (CBY circuit) leaking, missing or damaged | - Check for damage and repair as necessary. | | - Case leaking | - Check for damage and repair as necessary. | | - Converter assembly damaged | - If heat stained, renew converter. | SHIFT CONCERNS: NO 1ST GEAR, ENGAGES IN HIGHER GEAR | 215 Electrical System | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring looms, PCM, shift valve, transmission range sensor (TR sensor) | - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | SHIFT CONCERNS: NO 1ST GEAR, ENGAGES IN HIGHER GEAR | 315 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | External Shift Linkages | | | - Damaged, out of adjustment or incorrectly assembled | - Check for correct adjustment and repair as necessary. Ensure correct adjustment of the gear shift; refer to the adjustment procedure. After completing the repair, make sure that the transmission range sensor (TR sensor) is correctly adjusted; refer to Transmission, Assembly. | | Main Controls | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | Damaged gaskets | - Check for damage and repair as necessary. | | - 2nd gear regulator valve, solenoid regulator valve, shift valves stuck, damaged, incorrectly installed | - Check for damage and repair as necessary. | | - Solenoid filter seal damaged or fitted incorrectly | - Check for damage and repair as necessary. | | - Hydraulic passages damaged | - Check for damage and repair as necessary. | | - SS1, SS2 solenoid not functioning | Operate the solenoid valve using the transmission testing equipment, repair as necessary. | | Use the transmission testing equipment for diagnosing a specific gear | | | | - Refer to the following routines: | | | - Shift 1-2, Routine 220/320. | | | - Shift 2-3, Routine 221/321. | | | - Shift 3-4, Routine 222/322. | | Mechanical | | | - Seals, clutches damaged, worn | - Refer to the dismantling routine, repair as necessary. | | - Direct clutch, 2/4 band, 2/4 servo damaged, stuck on | - Refer to the dismantling routine, repair as necessary. | SHIFT CONCERNS: NO MANUAL 1ST GEAR | 216 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring looms, PCM, shift valve, transmission range sensor (TR sensor) | - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | SHIFT CONCERNS: NO MANUAL 1ST GEAR | 316 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Internal and External Shift Linkages | | | - Damaged, out of adjustment or incorrectly assembled | - Check and repair as necessary. Ensure correct adjustment of the gear shift; refer to the adjustment procedure. After completing the repair, make sure that the transmission range sensor (TR sensor) is correctly adjusted; refer to Automatic Transmission, Assembly. | | Main Controls | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | Damaged gaskets | - Inspect for damage, Renew as required. | | - 2nd gear pull-in valve stuck, damaged | - Inspect for damage, Renew as required. | | - SS2 stuck "on" | Operate the solenoid valve using the transmission testing equipment, repair as necessary. | | - Hydraulic passages damaged | - Check for damage and repair as necessary. | | Separator plates damaged, blocked | - Check for damage and repair as necessary. | SHIFT CONCERNS: NO 1-2 SHIFT (AUTOMATIC) | 220 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring looms, PCM, shift valve, transmission range sensor (TR sensor) | - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | SHIFT CONCERNS: NO 1-2 SHIFT (AUTOMATIC) | 320 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Incorrect pressures | | | - Line pressure | - Measure the operating pressure using a pressure connection at the mainline pressure blanking plug. Test the operating pressure and perform a stall speed test; for data refer to reference table no. 401, transmission fluid pressures. If not OK, check the following component: Valve body. | | Main Control | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | Damaged gaskets | - Check for damage. Renew as necessary. | | - 1-2 shift valve, 2-4 accumulator, main regulator valve stuck, damaged, or incorrectly installed | - Check for damage. Renew as necessary. | | - SS1 not functioning correctly | - Check for damage. Operate the solenoid valve using the transmission testing equipment. | | - Pressure plate/gasket damaged | - Check for damage. Renew as necessary. | | - Separator plates damaged | - Check for damage. Renew as necessary. | | - Hydraulic passages damaged | - Check for damage. Renew as necessary. | | INT/OD Band and Servo Assembly | NOTE: Also no 4th gear. | | - Seals damaged, missing | - Check for damage. Renew as necessary. | | - Piston damaged | - Check for damage. Renew as necessary. | | - Band damaged | - Check for damage. Renew as necessary. | | - Springs damaged | - Check for damage. Renew as necessary. | | - Servo rod or rod bore damaged | - Check for damage. Renew as necessary. | | Clutch - Low One-Way | | | - Assembly | - Check for damage. Renew as necessary. | | OD/Reverse Sun Gear and Shell | | | - Damaged, weld broken | - Check for damage. Renew as necessary. | | - Lugs damaged | - Check for damage. Renew as necessary. | | Case | | SHIFT CONCERNS: NO 2-3 SHIFT (AUTOMATIC) | 221 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring looms, PCM, shift valve, transmission range sensor (TR sensor) | - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | SHIFT CONCERNS: NO 2-3 SHIFT (AUTOMATIC) | 321 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Incorrect pressures | | | - Line pressure | - Measure the operating pressure using a pressure connection at the mainline pressure blanking plug. Test the operating pressure; for data refer to reference table no. 401, transmission fluid pressures. If not OK, check the following components: Valve body. | | Main Control | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Gasket leaks | - Check for damage and repair as necessary. | | - 2-3 shift valve (also no 4th), main regulator valve stuck, damaged, incorrectly installed | - Check for damage and repair as necessary. | | - SS2 not functioning correctly (also no 4th) | - Check for damage. Operate the solenoid valve using the transmission testing equipment. | | - Separator plates damaged | - Check for damage and repair as necessary. | | - Pressure plate/gasket leaks | - Check for damage and repair as necessary. | | - Hydraulic passages damaged | - Check for damage and repair as necessary. | | Pump Assembly | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | Damaged gaskets | - Check for damage and repair as necessary. | | - Porosity/cross-leaks | - Check for damage and repair as necessary. | | - Pump hub seal rings nos. 4 or 5 damaged | - Check for damage and repair as necessary. | | Direct Clutch Assembly | | | - Seals or piston damaged | - Perform Air Pressure Tests. | | - Piston bore damaged | - Check for damage and repair as necessary. | | - Friction plates severely damaged, worn | - Check for damage and repair as necessary. | | - Ball check not seating correctly | - Check for damage and repair as necessary. | | Compression spring | - Check for damage and repair as necessary. | | - Cylinder bore/splines damaged | - Check for damage and repair as necessary. | | - Shell/hub damaged | - Check for damage and repair as necessary. | | INT/OD Servo | | | - Piston or piston bore damaged | - Check for damage and repair as necessary. | | - Rod bore or rod damaged, leaking | - Check for damage and repair as necessary. | | Case | | | - Leak in the servo apply, servo release or direct clutch circuits | Check the casing for damage. Perform an air pressure test. Repair or renew as necessary. | SHIFT CONCERNS: NO 3-4 SHIFT (AUTOMATIC) | 222 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring looms, PCM, shift valve, transmission range sensor (TR sensor),TCS | - perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | SHIFT CONCERNS: NO 3-4 SHIFT (AUTOMATIC) | 322 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Incorrect pressures | | | - Line pressure | - Measure the operating pressure using a pressure connection at the mainline pressure blanking plug. Test the operating pressure; for exact data refer to reference table no. 401, transmission fluid pressures. If outside the specified values, check the valve body. | | Main Control | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Gasket leaks | - Check for damage and repair as necessary. | | - 3-4 shift valve, main regulator valve stuck, damaged or incorrectly installed | - Check for damage and repair as necessary. | | - SS1 not functioning correctly (also no 1st) | Operate the solenoid valve using the transmission testing equipment, repair as necessary. | | - Separator plates damaged or orifice blocked | - Check for damage and repair as necessary. | | INT/OD band and Servo Assembly | NOTE: Also no 2nd gear. | | - INT/OD band damaged, worn | - Check for damage and repair as necessary. | | - Servo rod or rod bore damaged | - Check for damage and repair as necessary. | | - Servo piston or cover damaged or leaking | - Check for damage and repair as necessary. | | - Springs damaged | - Check for damage and repair as necessary. | | Coast Clutch Assembly | | | - Seals damaged, missing | - Check for damage and repair as necessary. | | - Piston damaged | - Check for damage and repair as necessary. | | - Friction plates severely damaged, worn | - Check for damage and repair as necessary. | | - Check ball severely damaged | - Check for damage and repair as necessary. | | Forward One-Way Clutch | | | - Damaged | - Check for damage and repair as necessary. | | Case | NOTE: Also no 2nd gear. | | - Band anchor damaged | - Check for damage. Perform Air Pressure Tests. | | - Leak in the servo apply and servo release circuits | - Check for damage and repair as necessary. | SHIFT CONCERNS: SOFT/SLIP 1-2 SHIFT ONLY (AUTOMATIC) | 226 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring harnesses, PCM, electronic pressure control (EPC) solenoid, transmission fluid temperature (TFT) sensor | - Perform diagnosis using the Diagnostic Tool. Perform the stall speed test, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | SHIFT CONCERNS: SOFT/SLIP 1-2 SHIFT ONLY (AUTOMATIC) | 326 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Main Control | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | Damaged gaskets | - Check for damage and repair as necessary. | | - 2-4 accumulator piston plug and seal (also soft 3-4 shift), main regulator valve, line modulator valve (also soft 3-4 shift) stuck, damaged or incorrectly installed | - Check for damage and repair as necessary. | | - Hydraulic passages damaged | - Check for damage and repair as necessary. | | - Pressure plate/gasket damaged | - Check for damage and repair as necessary. | | - Separator plates damaged | - Check for damage and repair as necessary. | | INT/OD Band and Servo Assembly | | | - Piston not tightened to correct torque | - Check for damage and repair as necessary. | | - Servo rod or rod bore damaged | - Check for damage and repair as necessary. | | - 2/4 brake band and/or reverse clutch drum assembly worn, damaged or incorrectly assembled | - Check for damage and repair as necessary. | | - Springs damaged | - Check for damage and repair as necessary. | | - Servo cover and seal damaged | - Check for damage and repair as necessary. | | Forward OWC Assembly (slips in 1st) | | | - Not holding or damaged | - Check for damage and repair as necessary. | | Forward Clutch Assembly (slips in 1st) | - Perform Air Pressure Test. | | Damaged gaskets | - Check for damage and repair as necessary. | | - Return spring damaged | - Check for damage and repair as necessary. | | - Friction plates damaged | - Check for damage and repair as necessary. | | - Pump hub seals nos. 3 or 4 damaged | - Check for damage and repair as necessary. | | Low OWC Assembly | | | - Not overrunning, damaged | - Check for damage and repair as necessary. | | Low Reverse Clutch Assembly | | | - Friction plates severely damaged | - Check for damage and repair as necessary. | | Case | | | - Band anchor damaged | | | - Porosity/leaks in the servo apply and servo release circuits | | SHIFT CONCERNS: SOFT/SLIP 2-3 SHIFT ONLY (AUTOMATIC) | 227 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring harnesses, PCM, electronic pressure control (EPC) solenoid, transmission fluid temperature (TFT) sensor | - perform diagnosis using the Diagnostic Tool. Perform the stall speed test, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | SHIFT CONCERNS: SOFT/SLIP 2-3 SHIFT ONLY (AUTOMATIC) | 327 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Pump Assembly | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | Damaged gaskets | - Check for damage. Renew as necessary. | | - Pump hub seal rings No. 4 or No. 5 damaged | - Check for damage. Renew as necessary. | | Main Control Valve Body Assembly | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Gasket leaks | - Check for damage. Renew as necessary. | | - System pressure modulator valve (also soft 1-2 and 3-4 shifts), servo release shuttle valve stuck, damaged or incorrectly installed | - Check for damage. Renew as necessary. | | - Hydraulic passages damaged | - Check for damage. Renew as necessary. | | - Separator plates damaged | - Check for damage. Renew as necessary. | | - Pressure plate/gasket leaks | - Check for damage. Renew as necessary. | | Direct Clutch | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Seals or pistons damaged | - Check for damage. Renew as necessary. | | - Friction plates damaged, worn or excessive end clearance | - Check for damage. - Check the end float and repair as necessary. | | - Check ball not seating correctly | - Check for damage. Renew as necessary. | | - Return spring damaged | - Check for damage. Renew as necessary. | | INT/OD Servo | | | - Piston or piston bore damaged | - Check for damage. Renew as necessary. | | - Servo rod or rod bore damaged | - Check for damage. Renew as necessary. | | Case | | | - Leak in the servo apply, servo release or direct clutch circuits | Check the casing for damage. - Perform Air Pressure Test. | | Forward One-Way Clutch | | | - Not holding, damaged | - Check for damage. Renew as necessary. | SHIFT CONCERNS: SOFT/SLIP 3-4 SHIFT ONLY (AUTOMATIC) | 228 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring harnesses, PCM, electronic pressure control (EPC) solenoids, transmission fluid temperature (TFT) sensor | - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | SHIFT CONCERNS: SOFT/SLIP 3-4 SHIFT ONLY (AUTOMATIC) | 328 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Main Control | | | - Bolts not tightened to correct torque | - Tighten bolts to specifications. | | - Gasket leaks | - Check for damage. Renew as necessary. | | - System pressure modulator valve, 2-4 accumulator valve plug and seal (also soft 1-2 shift), stuck, damaged or incorrectly installed | - Check for damage. Renew as necessary. | | - Pressure plate/gasket leaks | - Check for damage. Renew as necessary. | | - Hydraulic passages damaged | - Check for damage. Renew as necessary. | | - Separator plates damaged or orifice blocked | - Check for damage. Renew as necessary. | | INT/OD Band and Servo Assembly | - Check for damage. Renew as necessary. | | - 2/4 brake band and/or reverse clutch drum assembly worn, damaged or incorrectly assembled | - Check for damage. Renew as necessary. | | - Piston, seals or piston bore damaged, missing | - Check for damage. Renew as necessary. | | - Servo cover or seal damaged | Perform an, air pressure test. Check for damage and repair as necessary. | | - Servo rod or rod bore damaged | - Check for damage. Renew as necessary. | | - Springs damaged | - Check for damage. Renew as necessary. | | Clutch - Direct | NOTE: Slipping may occur in 3rd gear. - Perform Air Pressure Test. | | - Seals damaged, missing | - Check for damage. Renew as necessary. | | - Piston damaged | - Check for damage. Renew as necessary. | | - Check ball damaged, missing or leaking | - Check for damage. Renew as necessary. | | - Return spring damaged | - Check for damage. Renew as necessary. | | - Friction plates damaged | - Check for damage. Renew as necessary. | | Case | | | - Band anchor damaged | - Check for damage. Renew as necessary. | | - Leak in the servo apply and servo release circuits | - Check for damage. Perform an air pressure test, renew as necessary. | SHIFT CONCERNS: SOFT/SLIP 4-3 SHIFT ONLY (AUTOMATIC) | 229 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring harnesses, PCM, electronic pressure control (EPC) solenoid, vehicle speed sensor, MAF sensor, throttle position sensor (TPS) | - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | SHIFT CONCERNS: SOFT/SLIP 4-3 SHIFT ONLY (AUTOMATIC) | 329 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Main Control | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Gasket leaks | - Check for damage and repair as necessary. | | - Servo release shuttle valve, main regulator valve stuck, damaged or incorrectly installed | - Check for damage and repair as necessary. | | - Hydraulic passages damaged | - Check for damage and repair as necessary. | | - Pressure plate/gasket leaks, or damaged | - Check for damage and repair as necessary. | | Separator plates damaged, blocked | - Check for damage and repair as necessary. | | INT/OD Band and Servo Assembly | | | - 2/4 brake band and reverse clutch drum assembly worn, damaged, or incorrectly assembled | - Check for damage and repair as necessary. | | - Servo return spring broken | - Check for damage and repair as necessary. | | - Servo rod damaged | - Check for damage and repair as necessary. | | - Piston seal damaged | - Check for damage and repair as necessary. | | Direct Clutch Assembly | | | - Seals damaged, missing | - Perform Air Pressure Test. | | | - Check for damage and repair as necessary. | | - Piston damaged | - Check for damage and repair as necessary. | | - Check ball damaged, missing or leaking | - Check for damage and repair as necessary. | | - Return spring damaged | - Check for damage and repair as necessary. | | - Friction plates damaged | - Check for damage and repair as necessary. | | Forward/Coast Clutch Assembly | | | - Seals damaged, missing | - Perform Air Pressure Test. | | | - Check for damage and repair as necessary. | | - Piston damaged | - Check for damage and repair as necessary. | | - Friction plates worn, damaged | - Check for damage and repair as necessary. | | - Check ball not functioning | - Check for damage and repair as necessary. | | - Forward clutch piston and return spring damaged | - Check for damage and repair as necessary. | | Case | | | - Porosity/leaks in the servo apply, servo release and direct clutch circuits | - Check for damage. Perform an air pressure compressed air test. | SHIFT CONCERNS: SOFT/SLIP 3-2 SHIFT ONLY (AUTOMATIC) | 230 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring harnesses, PCM, electronic pressure control (EPC) solenoid, throttle position sensor (TPS), vehicle speed sensor (VSS), MAF sensor, 3-2 timing coast clutch solenoid (CCS) | - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | SHIFT CONCERNS: SOFT/SLIP 3-2 SHIFT ONLY (AUTOMATIC) | 330 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Main Control | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Gasket damaged | - Check for damage. Renew as necessary. | | - 3-2 timing valve, solenoid regulator valve, 3-2 control valve stuck, damaged or incorrectly installed | - Check for damage and repair as necessary. | | - 3-2T/CCS solenoid not functioning correctly | Operate the solenoid valve using the transmission testing equipment, repair as necessary. | | - Pressure plate/gasket leaks, or damaged | - Check for damage and repair as necessary. | | Separator plates damaged, blocked | - Check for damage and repair as necessary. | | Direct clutch | | | - Return spring damaged, broken | - Perform Air Pressure Test. | | | - Check for damage and repair as necessary. | | - Friction plates damaged, worn | - Check for damage and repair as necessary. | | - Ball check not releasing | - Check for damage and repair as necessary. | | - Piston or seal damaged | - Check for damage and repair as necessary. | | INT/OD Band and Servo Assembly | | | - 2/4 band and/or reverse clutch drum assembly worn, damaged or incorrectly assembled | - Check for damage and repair as necessary. | | - Servo piston damaged | - Check for damage and repair as necessary. | | - Servo return and cushion springs damaged, incorrectly assembled | - Check for damage and repair as necessary. | | - Springs damaged, incorrectly assembled | - Check for damage and repair as necessary. | | - Servo rod bent, damaged | - Check for damage and repair as necessary. | | Pump Assembly | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | Damaged gaskets | - Check for damage. Renew as necessary. | | - Porosity/cross-leaks | - Check for porosity and leaks. Renew the pump if necessary. | | - Pump hub seal rings nos. 4, 5, 6 damaged or incorrectly installed | - Check for damage and repair as necessary. | | - Leak in the forward gear line to the direct gear line | - Check for damage and repair as necessary. | | Case | | | - Band anchor damaged | - Check for damage and repair as necessary. | | - Leaks in the servo apply and servo release circuits | - Check for damage. Perform an air pressure test. Repair as necessary. | | - Case bore damaged (servo rod) | - Check for damage and repair as necessary. | SHIFT CONCERNS: SOFT/SLIP 2-1 SHIFT ONLY (AUTOMATIC OR KICKDOWN) | 231 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring harnesses, PCM, electronic pressure control (EPC) solenoid, transmission fluid temperature (TFT) sensor, throttle position sensor (TPS), MAF sensor. | - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | SHIFT CONCERNS: SOFT/SLIP 2-1 SHIFT ONLY (AUTOMATIC OR KICKDOWN) | 331 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Pump Assembly | | | Damaged gaskets | - Check for damage. Renew as necessary. | | - Porosity/cross-leaks | - check for leaks/porosity. Renew as necessary. | | - Pump hub seals nos. 3 or 4 leaking, incorrectly installed, damaged | - Check for damage and repair as necessary. | | Intermediate OD Servo and Band Assembly | | | - Servo piston damaged | - Check for damage and repair as necessary. | | - Servo piston return spring damaged | - Check for damage and repair as necessary. | | Forward Clutch Assembly | - Perform Air Pressure Test. | | - Piston or seals damaged | - Perform Air Pressure Test. | | | - Check for damage and repair as necessary. | | - Friction plates damaged | - Check for damage and repair as necessary. | | Low OWC | | | - Damaged, not holding | - Check for damage and repair as necessary. | SHIFT CONCERNS: HARSH 1-2 SHIFT ONLY (AUTOMATIC) | 232 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring looms, PCM, electronic pressure control solenoid (EPC), transmission fluid temperature sensor (TFT), vehicle speed sensor (VSS), turbine shaft speed sensor (TSS), throttle position sensor (TPS), mass air flow sensor (MAF), torque converter clutch solenoid (TCC), transmission range sensor (TR-Sensor) | - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. Perform the stall speed test. | SHIFT CONCERNS: HARSH 1-2 SHIFT ONLY (AUTOMATIC) | 332 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Main Control | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Gasket leaks | - Check for damage. Renew as necessary. | | - 2-4 accumulator valve, 3-2 control valve (also harsh 3-4 shift) stuck, damaged or incorrectly installed | - Check for damage and repair as necessary. | | - Separator plates damaged | - Check for damage and repair as necessary. | | - Hydraulic passages damaged | - Check for damage and repair as necessary. | | Pump Assembly | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Gasket damaged | - Check for damage. Renew as necessary. | | - Pump hub seal rings, nos. 3 or 4, damaged | - Check for damage and repair as necessary. | | - Porosity/cross-leaks | - Check for damage and repair as necessary. | | INT/OD Band and Servo Assembly | | | - Cushion return springs damaged | - Check for damage and repair as necessary. | | - INT/OD band damaged, worn | - Check for damage and repair as necessary. | | - 2/4 brake band and/or reverse clutch drum assembly worn, damaged or incorrectly assembled | - Check for damage and repair as necessary. | | Forward Clutch Assembly | | | Damaged gaskets | - Perform Air Pressure Test. | | | - Check for damage and repair as necessary. | | - Return spring damaged | - Check for damage and repair as necessary. | | - Friction plates damaged | - Check for damage and repair as necessary. | | Case | | | - Band anchor area damaged | - Check for damage. If damaged, renew the housing. | SHIFT CONCERNS: HARSH 2-3 SHIFT ONLY (AUTOMATIC) | 233 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - electrical inputs/outputs, vehicle wiring looms, PCM, electronic pressure control solenoid (EPC), transmission range sensor (TR sensor), vehicle speed sensor (VSS), transmission fluid temperature sensor (TFT), mass air flow sensor (MAF), torque converter clutch solenoid (TCC), turbine shaft speed sensor (TSS) | - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | SHIFT CONCERNS: HARSH 2-3 SHIFT ONLY (AUTOMATIC) | 333 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Main Control | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Gasket leaks | - Check for damage. Renew as necessary. | | - System pressure modulator valve (also 1-2 and 3-4 harsh shift), servo release shuttle valve stuck, damaged or incorrectly installed | - Check for damage and repair as necessary. | | - Separator plates damaged | - Check for damage and repair as necessary. | | - Hydraulic passages damaged | - Check for damage and repair as necessary. | | Pump Assembly | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Gasket damaged | - Check for damage. Renew as necessary. | | - Porosity/cross-leaks | - Check for damage and repair as necessary. | | - Pump hub seal rings nos. 4 or 5 damaged | - Check for damage and repair as necessary. | | Direct clutch | | | - Piston or piston bore damaged | - Perform Air Pressure Test. | | | - Check for damage and repair as necessary. | | - Friction plates damaged, worn | - Check for damage and repair as necessary. | | - Ball check not seating correctly | - Check for damage and repair as necessary. | | - Return spring damaged | - Check for damage and repair as necessary. | | - Clutch cylinder splines damaged | - Check for damage and repair as necessary. | | INT/OD Servo | | | - Servo piston or piston bore damaged | - Check for damage and repair as necessary. | | - Servo rod damaged | - Check for damage and repair as necessary. | | Case | | | - Leaks in the servo apply, servo release or direct clutch circuits | Check the casing for damage. Perform an air pressure test. Repair or renew the housing as necessary. | | - Servo rod bore damaged | - Check for damage and repair as necessary. | SHIFT CONCERNS: HARSH 3-4 SHIFT ONLY (AUTOMATIC) | 234 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring looms, PCM, electronic pressure control solenoid (EPC), vehicle speed sensor (VSS),3-2 shift/coast clutch solenoid (CCS), transmission range sensor (TR-Sensor), transmission fluid temperature sensor (TFT), turbine shaft speed sensor (TSS), throttle position sensor (TPS), mass air flow sensor (MAF), torque converter clutch solenoid (TCC) | - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | SHIFT CONCERNS: HARSH 3-4 SHIFT ONLY (AUTOMATIC) | 334 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Main Control | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Gasket leaks | - Check for damage. Renew as necessary. | | - System pressure modulator valve (also 1-2 and 2-3 harsh shift), 3-2 control valve, 2-4 accumulator valve, coast clutch valve, stuck, damaged or incorrectly installed | - Check for damage and repair as necessary. | | - Hydraulic passages damaged | - Check for damage and repair as necessary. | | Separator plates damaged, blocked | - Check for damage and repair as necessary. | | Pump Assembly | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | Damaged gaskets | - Check for damage. Renew as necessary. | | - Porosity/cross-leaks | - Check for damage and repair as necessary. | | - Coast clutch Teflon seals damaged | - Check for damage. Renew as necessary. | | INT/OD Band and Servo Assembly | | | - 2/4 band and reverse clutch drum assembly, damaged, worn, incorrectly assembled | - Check for damage and repair as necessary. | | - Servo piston or cover damaged or leaking | - Check for damage and repair as necessary. | | - Springs damaged | - Check for damage and repair as necessary. | | Coast Clutch Assembly | | | - Piston or seals damaged, missing | - Check for damage and repair as necessary. | | - Friction plates damaged, worn | - Check for damage and repair as necessary. | | - Check ball not functioning | - Check for damage and repair as necessary. | | Direct Clutch Assembly | | | - Piston or seals damaged, missing | - Perform Air Pressure Test. | | | - Check for damage and repair as necessary. | | - Check ball damaged, missing or leaking | - Check for damage and repair as necessary. | | - Return spring damaged | - Check for damage and repair as necessary. | | - Friction plates damaged | - Check for damage and repair as necessary. | | - Clutch cylinder splines damaged | - Check for damage and repair as necessary. | | Case | | | - Band anchor damaged | - Check for damage and repair as necessary. | SHIFT CONCERNS: HARSH 4-3 SHIFT ONLY (AUTOMATIC) | 235 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring looms, PCM, electronic pressure control solenoid (EPC), transmission range sensor (TR-Sensor), vehicle speed sensor (VSS),3-2 shift/coast clutch solenoid (CCS), transmission fluid temperature sensor (TFT), turbine shaft speed sensor (TSS), throttle position sensor (TPS), mass air flow sensor (MAF), torque converter clutch solenoid (TCC) | - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | SHIFT CONCERNS: HARSH 4-3 SHIFT ONLY (AUTOMATIC) | 335 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Main Control | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Gasket leaks | - Check for damage. Renew as necessary. | | - Servo release shuttle valve, 3-2 timing/coast valve stuck, damaged or incorrectly installed | - Check for damage and repair as necessary. | | - Hydraulic passages damaged | - Check for damage and repair as necessary. | | Separator plates damaged, blocked | - Check for damage and repair as necessary. | | Pump Assembly | | | - Bolts not tightened to correct torque | -Tighten bolts to specification. | | - Porosity/cross-leaks, seal rings damaged, missing or leaking ball plug | - Check for damage. Renew the pump if necessary. | | - Gasket damaged | - Check for damage. Renew as necessary. | | - Seal rings nos. 2, 3, 4 or 5 (coast and direct clutch circuits) | - Check for damage and repair as necessary. | | - Pump hub damaged | - Check for damage and repair as necessary. | | INT/OD Band and Servo Assembly | | | - Servo rod bent, damaged | - Check for damage and repair as necessary. | | - Servo return spring broken | - Check for damage and repair as necessary. | | Coast Clutch Assembly | | | - Seals damaged, missing | - Check for damage. Repair where necessary. | | - Piston damaged | - Check for damage. Repair where necessary. | | - Friction plates worn, damaged | - Check for damage. Repair where necessary. | | - Check ball not functioning | - Check for damage. Repair where necessary. | | - Forward clutch piston and return spring damaged | - Check for damage. Repair where necessary. | | Case | | | - Porosity/leaks in the servo apply, servo release and direct clutch circuits | - Check for damage. Perform an air pressure test. Repair as necessary. | SHIFT CONCERNS: HARSH 3-2 SHIFT ONLY (AUTOMATIC) | 236 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring looms, PCM, electronic pressure control solenoid (EPC), transmission range sensor (TR-Sensor), vehicle speed sensor (VSS),3-2 shift/coast clutch solenoid (CCS), transmission fluid temperature sensor (TFT), turbine shaft speed sensor (TSS), throttle position sensor (TPS), mass air flow sensor (MAF), torque converter clutch solenoid (TCC) | - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | SHIFT CONCERNS: HARSH 3-2 SHIFT ONLY (AUTOMATIC) | 336 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Main Control | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Gasket damaged | - Check for damage. Renew as necessary. | | - 3-2 timing valve, solenoid regulator valve, 3-2 control valve stuck, damaged, incorrectly installed | - Check for damage and repair as necessary. | | - Hydraulic passages damaged | - Check for damage and repair as necessary. | | - Separator plates damaged or blocked | - Check for damage and repair as necessary. | | - 3-2T/CCS solenoid not functioning correctly | Operate the solenoid valve using the transmission testing equipment. If the coast clutch operation is OK, continue diagnosis on the direct clutch. | | Direct Clutch Assembly | | | - Return spring damaged, broken | - Perform Air Pressure Test. | | | - Check for damage and repair as necessary. | | - Friction plates damaged, worn | - Check for damage and repair as necessary. | | - Check ball not opening | - Check for damage and repair as necessary. | | INT/OD Band and Servo Assembly | | | - INT/OD band and/or reverse clutch drum assembly damaged, worn or incorrectly assembled | - Check for damage and repair as necessary. | | - Servo piston damaged | - Check for damage and repair as necessary. | | - Servo return and cushion springs damaged, incorrectly assembled | - Check for damage and repair as necessary. | | - Springs damaged, incorrectly assembled | - Check for damage and repair as necessary. | | - Servo rod bent or damaged | - Check for damage and repair as necessary. | | Pump Assembly | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | Damaged gaskets | - Check for damage. Renew as necessary. | | - Porosity/cross-leaks | - Check for porosity and leaks. Renew as necessary. | | - Pump hub seal rings damaged or incorrectly installed | - Check for damage and repair as necessary. | | Case | | | - Band anchor damaged | - Check for damage and repair as necessary. | | - Servo rod bore damaged | - Check for damage and repair as necessary. | TORQUE CONVERTER OPERATION CONCERNS: NO APPLY | 240 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring harnesses, PCM, transmission fluid temperature (TFT) sensor, torque converter clutch (TCC) solenoid, brake on/off (BOO) switch, turbine shaft speed (TSS) sensor | - Perform torque converter clutch operation test; refer to Road Test Vehicle. - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | TORQUE CONVERTER OPERATION CONCERNS: NO APPLY | 340 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Main Control | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Gasket damaged | - Check for damage. Renew as necessary. | | - Solenoid pressure regulator valve, bypass clutch control valve and plunger, converter regulator valve stuck, damaged, incorrectly installed | - Check for damage and repair as necessary. | | - TCC solenoid not functioning correctly | Operate the solenoid valve using the transmission testing equipment, repair as necessary. | | - Hydraulic passages damaged | - Check for damage. Renew as necessary. | | - Separator plates damaged or blocked | - Check for damage and repair as necessary. | | Torque Converter | | | - Leakage, internal damage | - Check for damage and leaks. - Perform torque converter clutch operation test; refer to Road Test Vehicle. Renew as necessary. | TORQUE CONVERTER OPERATION CONCERN: ALWAYS APPLIED/STALLS VEHICLE | 241 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring harnesses, powertrain control module (PCM), transmission fluid temperature (TFT) sensor, TCC solenoid | - Perform torque converter clutch operation test; refer to Road Test Vehicle. - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | TORQUE CONVERTER OPERATION CONCERN: ALWAYS APPLIED/STALLS VEHICLE | 341 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Main Control | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Gasket damaged | - Check for damage. Renew as necessary. | | - Bypass clutch control valve and plunger (always applied), converter regulator valve stuck, damaged, incorrectly installed | - Check for damage and repair as necessary. | | - Separator plates damaged, blocked | - Check for damage and repair as necessary. | | - TCC solenoid not functioning correctly. NOTE: Converter clutch not applied in 1st gear or reverse gear | Operate the solenoid valve using the transmission testing equipment, repair as necessary. | | - Pressure plate/gasket damaged | - Check for damage and repair as necessary. | | - Hydraulic passages damaged | - Check for damage and repair as necessary. | | Pump Assembly | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | Damaged gaskets | - Check for damage. Renew as necessary. | | - Pump hub No. 1 seal ring damaged, missing, incorrectly installed | - Check for damage and repair as necessary. | | Torque Converter Assembly | | | - Internal seals damaged | - Check for damage and repair as necessary. | | - Piston plate damaged/stuck to cover | - If cover is heat stained, renew torque converter. | | Case | | | - Porosity/cross-leaks from the clutch bypass circuit | - Check for leaks/porosity, repair or renew as necessary. | TORQUE CONVERTER CLUTCH CONCERN: CYCLING/SHUDDER/CHATTER | 242 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs (TCC, TR, TP, RPM) | - Perform torque converter clutch operation test. | | - PCM calibration may not be at current level | - Run on-board diagnostics. Refer to PC/ED Manual for diagnosis. Perform Torque Converter Engagement Test and Pinpoint Tests “C” and “D” as outlined in this manual. Clear codes, road test the vehicle and re-run on-board diagnostics. Refer to diagnostic equipment. | TORQUE CONVERTER CLUTCH CONCERN: CYCLING/SHUDDER/CHATTER | 342 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Fluid condition | - Check the fluid condition. If the fluid is burnt or contaminated, drain the fluid from the transaxle and torque converter assembly. Record and erase the diagnostic trouble codes. Perform Drive Cycle as outlined in this manual. Perform On-Board Diagnostics. If condition still exists, proceed with diagnosis. | | Main Controls | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - TCC solenoid malfunction | - Refer to electrical routine 242. | | - Damaged gaskets | - Check for damage. Renew as necessary. | | Pump Assembly | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Cross leaks | - Check for porosity/leaks, gasket damage. Renew pump as required. | | - Damaged gasket or seals | - Check for damage. Renew as necessary. | | Torque Converter Assembly | | | - Excessive end clearance | - Check clearance and adjust as necessary. | | - Internal leakage | - Check for leaks, repair or renew as necessary. | OTHER CONCERNS: SHIFT LEVER EFFORT IS HIGH | 351 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Brake Shift Interlock | - Refer to diagnostic procedure. | | | | | Internal and External Shift Linkages | | | - Damaged, out of adjustment or incorrectly assembled | - Check and repair as necessary. Ensure correct adjustment of the gear shift; refer to the adjustment procedure. After completing the repair, make sure that the transmission range sensor (TR sensor) is correctly adjusted; refer to the procedure during adjustment. | | - Manual selector lever damaged, park inhibitor mechanism damaged, shaft bent, detent lever shaft bore (in case) damaged, detent spring bent/damaged, nut loose | - Check for damage and repair as necessary. | | Main Control | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Manual valve stuck, damaged | - Check for damage and repair as necessary. | OTHER CONCERNS: EXTERNAL LEAKS | 352 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Fluid | | | - Not filled to correct level | - Adjust fluid to correct level. | | Seals/Gaskets | | | - Differential seals, speedometer drive pinion, retainer seal, pump assembly, main control cover, servo cover, split flange gasket, converter impeller hub, selector lever shaft seal, fluid level indicator tube | - Locate the leak, repair as necessary. If the leak is at the differential seal or impeller hub, check the return holes in the housing/converter housing, check the surface of the linkshaft or front axle driveshaft and joint for roughness. Surface roughness can lead to seal failure, repair as necessary. | | Other | | | - Fluid tube bracket, mainline pressure plug, pressure port plugs, drain plug, cooler tubes, case porosity, cracked case | - Locate the leak, repair as necessary. | | | Check vent for damage or blockage, repair as required. | | | - Check for leaks and repair as necessary. | | Sensors/Connectors | | | - Transmission multiplug, transmission range sensor (TR sensor). Turbine shaft speed sensor (TSS) or seal | - Locate the leak, repair as necessary. | OTHER CONCERNS: POOR VEHICLE PERFORMANCE | 253 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Base engine concerns | - Refer to diagnostic procedure in the Workshop Manual. | | - Electrical inputs/outputs, vehicle wiring looms, PCM, transmission fluid temperature (TFT), torque converter clutch (TCC) solenoid, transmission range sensor (TR-Sensor), throttle position sensor (TPS) | - Perform torque converter clutch operation test; refer to Road Test Vehicle. - perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | OTHER CONCERNS: POOR VEHICLE PERFORMANCE | 353 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Internal or external shift components or transmission range (TR sensor) | | | - Damaged, out of adjustment or incorrect assembly | - Check and repair as necessary. Ensure correct adjustment of the gear shift; refer to the adjustment procedure. After completing the repair, make sure that the transmission range sensor (TR sensor) is correctly adjusted; refer to the procedure during adjustment. | | - Verify Proper Shift Timing and Engagements | | | - Go to the appropriate diagnostic routines in the index | | | Torque Converter Clutch Always Applied | - Go to Routine 341. | | Torque Converter One-Way Clutch | | | - Damaged | - Check the torque converter, repair or renew as necessary. | OTHER CONCERNS: NOISE/VIBRATION - FORWARD/REVERSE | 354 - HYDRAULIC/MECHANICAL ROUTINES | | Possible Component | Reference/Action | | For Noises/Vibrations That Change With Engine Speed: | | | - Torque converter components | - Locate the source, repair as necessary. | | - Fluid level (low) pump cavitation | | | Pump Assembly | | | - Engine drive accessories | | | - Cooler tubes touching | | | - Flywheel | | | - Inspection cover | | | For Noises/Vibrations that Change with Vehicle Speed: | | | - Powertrain mounts loose, damaged | - Locate the source, repair as necessary. For specific shifts or torque converter concerns, refer to the routines in the index. | | - Tires | | | - Driveline concerns: front axle driveshaft and joint or linkshaft, differential: chain drive, suspension, non-standard modifications | | | - Planetary gear sets | | | - Chain touching the chain cover | - Inspect the chain cover for signs of damage or incorrect installation, repair as necessary. | | Forward One-Way Clutch | | | Torque Converter | | | - LH and RH front axle driveshaft and joint splines worn, damaged | - Check for damage and repair as necessary. | | - Front axle driveshafts or speedometer gears | | | Other Noises/Vibrations: | | | - Shift cable and bracket vibration, touching | - Locate the source, repair as necessary. | | - Cooler lines touching bodywork | | OTHER CONCERNS: ENGINE WILL NOT CRANK | 255 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Base engine concerns | - Refer to diagnostic procedure in the Workshop Manual. | | - Electrical inputs/outputs, vehicle wiring looms, PCM, shift valves, transmission range sensor (TR sensor) damaged, incorrectly adjusted | - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | OTHER CONCERNS: ENGINE WILL NOT CRANK | 355 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Starter/Flywheel | | | - Damaged or incorrectly installed | - Check for damage, incorrect installation, repair as necessary. | | Internal or external shift components or transmission range (TR sensor) | | | - Damaged, out of adjustment or incorrect assembly | Ensure correct adjustment of the gear shift; refer to the adjustment procedure. After completing the repair, make sure that the transmission range sensor (TR sensor) is correctly adjusted; refer to the procedure during adjustment. | OTHER CONCERNS: NO PARK RANGE | 356 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Internal or External Shift Linkages | | | - Damaged, out of adjustment or incorrect assembly | - Check and repair as necessary. Ensure correct adjustment of the gear shift; refer to the adjustment procedure. After completing the repair, make sure that the transmission range sensor (TR sensor) is correctly adjusted. Refer to the procedure during adjustment. | | Park Mechanism | - Check for damage and repair as necessary. | | - Parking lock gear on the driven sprocket, parking pawl return spring, engagement springs | - Check for damage and repair as necessary. | | - Parking pawl, parking pawl shaft, selector lever, cam plate drive dog, selector lever linkage spring, transmission range sensor (TR-Sensor), parking pawl drive plate, selector lever shaft nut damaged, missing or incorrectly fitted | - Check for damage and repair as necessary. | OTHER CONCERNS: TRANSAXLE OVERHEATING | 257 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring harnesses, PCM, torque converter clutch (TCC) solenoid, transmission fluid temperature (TFT) sensor, turbine shaft speed (TSS) sensor | - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. | OTHER CONCERNS: TRANSAXLE OVERHEATING | 357 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Vehicle Concerns Causing Engine Overheating | - Refer to diagnostic procedure. | | Fluid | | | - Not filled to correct level | - Adjust to correct level. | | - Condition | - Inspect; refer to Check Fluid Level and Condition. If the fluid is foaming, check the thermovalve and filter seals and repair as necessary. | | Cooler Tubes | | | - Damaged, blocked, reversed | - Check for damage and repair as necessary. | | Intake Cooler | | | - Damaged, blocked, restricted or leaking | - Check for damage and repair as necessary. | | Auxiliary Cooler (if equipped) | | | - Damaged, blocked, restricted or leaking | - Check for damage or incorrect installation, repair as necessary. | | Main Control | | | - Bolts not tightened to correct torque | - Tighten bolts to specification. | | - Main regulator valve, bypass clutch control valve, converter regulator valve stuck, damaged, incorrectly installed | - Check for damage and repair as necessary. | | - Hydraulic passages damaged | - Check for damage and repair as necessary. | | - Separator plates/gaskets damaged | - Check for damage and repair as necessary. | | - TCC solenoid not functioning correctly (off) | Operate the solenoid valve using the transmission testing equipment, repair as necessary. | | Torque Converter Clutch - No Apply | - Go to Routine 240/340 | | Pump Assembly | | | - Gasket damaged | - Check for damage and repair as necessary. | | - Rear lube passage blocked | - Check for damage and repair as necessary. | | Chain Pan | | | - Missing | - Check whether present. If missing, install. | | Thermostatic Fluid Level Control Valve | | | - Stuck open or damaged | - Check for damage and repair as necessary. | | - Gasket damaged or missing | - Check for damage. Renew as necessary. | | - Bolt or bracket damaged, missing, or incorrectly installed | - Check for damage and repair as necessary. | | Case/Converter Housing/Stator Support | | | - Front lube passage blocked or restricted | - Check passages, refer to Air Pressure Tests and Air Pressure Test Port Locations for identification of passages, repair as necessary. | | - Torque converter lock-up clutch, timing passages blocked or restricted | | OTHER CONCERNS: NO ENGINE BRAKING IN MANUAL 1ST POSITION | 258 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring harnesses, powertrain control module, 3-2 timing/coast clutch solenoid | - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. Perform the stall speed test. | OTHER CONCERNS: NO ENGINE BRAKING IN MANUAL 1ST POSITION | 358 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Main Controls | | | - Bolts out of specification | - Tighten bolts to specification. | | Damaged gaskets | - Check for damage. Renew as necessary. | | - Low/reverse modulator valve, coast clutch valve stuck, damaged or incorrectly installed | - Check for damage and repair as necessary. | | - 3-2 timing/coast clutch solenoid stuck or damaged | - Check for damage or contamination. Operate the solenoid valve using the transmission testing equipment, repair as necessary. | | - Hydraulic passages damaged | - Check for damage and repair as necessary. | | - Pressure plate/gasket damaged | - Check for damage and repair as necessary. | | - Separator plate/gasket damaged | - Check for damage and repair as necessary. | | Coast Clutch | | | - Incorrectly assembled, damaged | - Check for damage and repair as necessary. | | - Forward clutch hub seal damaged | - Check for damage and repair as necessary. | | - Piston or seals damaged | - Check for damage and repair as necessary. | | - Ball check damaged, missing | - Check for damage and repair as necessary. | | Low/reverse clutch | | | - Incorrectly assembled, damaged | - Perform Air Pressure Test. | | | - Check for damage and repair as necessary. | | - Piston or seals damaged | - Check for damage and repair as necessary. | | Pump Assembly | | | - Pump hub seals number 2 or 3 for coast clutch circuit damaged, missing | - Check for damage and repair as necessary. | OTHER GEARSHIFT DIFFICULTIES: NO ENGINE BRAKING IN DRIVE (O/D SWITCH ON) OR SELECTOR LEVER POSITION "2". | 259 - ELECTRICAL ROUTINE | | Possible Component | Reference/Action | | Powertrain Control System | | | - Electrical inputs/outputs, vehicle wiring harnesses, powertrain control module, 3-2 timing/coast clutch solenoid | - Perform diagnosis using the Diagnostic Tool, repair as necessary. Clear trouble codes, road test and check again using the Diagnostic Tool. Perform the stall speed test. | OTHER GEARSHIFT DIFFICULTIES: NO ENGINE BRAKING IN DRIVE (O/D SWITCH ON) OR SELECTOR LEVER POSITION "2". | 359 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Internal or External Shift Linkages | | | - Damaged, out of adjustment or incorrectly assembled | - Check and repair as necessary. Ensure correct adjustment of the gear shift; refer to the adjustment procedure. After completing the repair, make sure that the transmission range sensor (TR sensor) is correctly adjusted; refer to the procedure during adjustment. | | Main Controls | | | - 3-4 shift valve, 1-2 shift valve, 2nd gear control valve, coast clutch solenoid sticking or damaged | - Check for damage and repair as necessary. | | - 3-2 timing/coast clutch solenoid stuck or damaged | - Check for damage or contamination. Operate the solenoid valve using the transmission testing equipment, repair as necessary. | | Forward One-Way Clutch | | | - Damaged, incorrectly assembled | - Check for damage and repair as necessary. | | Coast clutch | | | - Incorrectly assembled | - Check for damage and repair as necessary. | | - Forward clutch hub seal assembled | - Check for damage and repair as necessary. | | - Piston or seals damaged | - Check for damage and repair as necessary. | | - Ball check damaged, missing | - Check for damage and repair as necessary. | | Pump Assembly | | | - Pump hub seals number 2 and 3 for the coast clutch circuit damaged, missing | - Check for damage and repair as necessary. | OTHER CONCERNS: VEHICLE MOVEMENT WITH GEAR SELECTOR IN THE "N" POSITION | 362 - HYDRAULIC/MECHANICAL ROUTINE | | Possible Component | Reference/Action | | Internal or External Shift Linkages | | | - Damaged, out of adjustment or incorrectly assembled | - Check and repair as necessary. Ensure correct adjustment of the gear shift; refer to the adjustment procedure. After completing the repair, make sure that the transmission range sensor (TR sensor) is correctly adjusted; refer to the procedure during adjustment. | | Pump Assembly | | | - Gaskets severely damaged | - Check for damage. Renew as necessary. | | - Pump hub seal number 2, leak in the forward clutch circuit | - Check for damage and repair as necessary. | | Forward/Coast Clutch Assembly | | | - Friction plates severely damaged | - Check for damage and repair as necessary. | | - Return spring damaged | - Check for damage and repair as necessary. | | - Check ball damaged, missing | - Check for damage and repair as necessary. | CAUTION:The transmission testing equipment must be removed from the transmission and the vehicle wiring harness re-connected to determine these pressures Reference: Pressure Chart | Shift lever position | Idle (bar) | Stall (bar) | | PARK, NEUTRAL | 4,4 - 5,2 | - | | REVERSE | 4,4 - 5,2 | 18 - 20 | | DRIVE | 3,1 - 4,3 | 11,6 - 12,7 | | SECOND | 3,1 - 4,3 | 11,6 - 12,7 | | FIRST | 3,1 - 4,3 | 11,6 - 12,7 | Reference Table: Clutch/Band Application | Gear | 2/4 Inter- mediate Over- drive Band | Forward Clutch | Direct Clutch | Coast Clutch | Low/Rev Clutch | Reverse Clutch | Forward One-Way Clutch | Clutch - Low One-Way | | Gear | | | | | | | Drive | Coast | Drive | Coast | | R | | | | | X | X | | | | | | D-1 | | X | | | | | X | OR | X | OR | | D-2 | X | X | | | | | X | OR | OR | OR | | D-3 | | X | X | | | | X | OR | OR | OR | | D-4 | X | X | X | | | | OR | OR | OR | OR | | M-2 | X | X | | X | | | X | | OR | OR | | M-1 | | X | | X | X | | X | | X | | X - Transmits torque. OR - Overrunning SOLENOID OPERATION CHART | Transaxle Range Selector Lever Position | PCM Commanded Gear | SSA | SSB | 3-2T/CCS | TCC | | P | PARK | OFF | ON | ON | OFF | | R | REVERSE | OFF | ON/OFF | ON | * | | N | NEUTRAL | OFF | ON | ON | OFF | | OD | | | | | | | D | 1 | ON | ON | ON | * | | D | 2 | OFF | ON | ON | ** | | D | 3 | OFF | OFF | ON | ** | | D | 4 | ON | OFF | ON | ** | | OD OFF | | | | | | | D | 1 | ON | ON | ON | * | | D | 2 | OFF | ON | OFF | ** | | D | 3 | OFF | OFF | OFF | ** | | 2 | 2 | OFF | ON | OFF | ** | | 2*** | 3 | OFF | OFF | OFF | ** | | 1 | 1 | ON | ON | OFF | * | | 1*** | 2 | OFF | ON | OFF | ** | | 1*** | 3 | OFF | OFF | OFF | ** | *Not allowed by hydraulics.**Powertrain control module (PCM) commanded.***When a manual pull - in occurs above a calibrated speed, the transaxle will not downshift from the higher gear until the vehicle speed drops below this calibrated speed. |
