| Diagnosis and Testing Refer to Wiring Diagrams Section 501-16, for schematic and connector information. Special Tool(s) | | Terminal probe kit 29-011A | Inspection and Verification NOTE:The generic electronic module (GEM) is part of the central junction box (CJB). NOTE:If a new GEM module is being installed, the new module must be configured following installation. For this purpose, the vehicle-specific data is read out of the module to be changed using WDS and is transferred to the new module.REFER to: Module Configuration (418-01 Module Configuration, General Procedures), Generic Electronic Module (GEM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing). NOTE:Before reading out the vehicle-specific data make sure that all electrical connections in the vehicle are reconnected so that the module and WDS can communicate correctly. - Verify the customer concern.
- Visually inspect for obvious signs of mechanical or electrical damage.
Visual Inspection Chart | Mechanical | Electrical | - Wiper blade(s)
- Wiper arm pivot shaft
- Windshield washer reservoir
- Hose(s)
- Washer nozzles
| - Fuse(s)
- Electrical connector(s)
- Wiring harness
- Washer pump(s)
- Wiper motor(s)
| - If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the concern is not visually evident, verify the symptom and refer to the Symptom Chart.
Symptom Chart Symptom Chart | Symptom | Possible Sources | Action | | The wipers are inoperative | * Fuse(s) * Circuit(s) * Steering column multifunction switch * Windshield wiper motor * Rear window wiper motor * Central junction box (CJB) | * | | The wipers wipe continuously | * Circuit(s) * Steering column multifunction switch * Windshield wiper motor * Rear window wiper motor | * | | The slow or fast wiper speed does not operate correctly | * Circuit(s) * Steering column multifunction switch * Windshield wiper motor | * | | The intermittent wiper speed does not operate correctly (slow/fast speeds OK) | * Circuit(s) * Steering column multifunction switch * Windshield wiper motor * Central junction box (CJB) | * | | The wash and wipe function is inoperative | * Circuit(s) * Steering column multifunction switch | * | | The wipers will not park at the correct position | * Windshield wiper motor * Rear window wiper motor | * INSTALL a new wiper motor. TEST the system for normal operation. | | The wipers do not operate correctly with the washer function (wipe function is OK) | * Circuit(s) * Windshield wiper motor * Rear window wiper motor | * | | The washer pump is inoperative (wipe function is OK) | * Circuit(s) * Washer pump motor | * | | The headlamp washer function does not operate correctly | * Fuse(s) * Circuit(s) * Headlamp washer pump * Headlamp washer pump relay * Headlamp cleaning relay * Headlamp switch * Central junction box (CJB) | * | | The windshield washer jet heater(s) is/are inoperative | * Circuit(s) * Windshield washer jet heater | * | Pinpoint Tests NOTE:Use a digital multimeter for all electrical measurements. | PINPOINT TEST A : THE WIPERS ARE INOPERATIVE | | TEST CONDITIONS | DETAILS/RESULTS/ACTIONS | | A1: DETERMINE THE FAULT CONDITION | | | 1 Ignition switch in position II. | | | 2 ACTUATE the front and rear wipers. | | | Are only the windshield wipers inoperative? Yes The windshield wipers (all wiper speeds) are inoperative: GO to A7. No - Vehicles before 05/2002: The rear window wiper and the windshield wipers are inoperative: GO to A2. - Vehicles as of 05/2002: The rear window wiper and the windshield wipers are inoperative: GO to A4. - The rear window wiper is inoperative: GO to A2. | | A2: CHECK FUSE F20 (15 A) (CJB) | | | 1 Ignition switch in position 0. | | | 2 Disconnect fuse F20 (15 A) (CJB). | | | 3 CHECK fuse F20 (15 A) (CJB). | | | Is the fuse OK? Yes No INSTALL a new fuse F20 (15 A) (CJB) and TEST the system for normal operation. If the fuse blows again, LOCATE and REPAIR the short to ground by using the wiring diagrams. TEST the system for normal operation. | | A3: CHECK THE VOLTAGE AT FUSE F20 (15 A) (CJB) | | | 1 Connect fuse F20 (15 A) (CJB). | | | 2 Ignition switch in position II. | | | 3 Measure the voltage between fuse F20 (15 A) (CJB) and ground. | | | Is battery voltage indicated? Yes - Vehicles before 05/2002: The rear window wiper and the windshield wipers are inoperative: GO to A6. - Only the rear window wiper is inoperative: GO to A12. No REPAIR the power supply of fuse F20 (15 A) (CJB) by using the wiring diagrams. TEST the system for normal operation. | | A4: CHECK FUSE F33 (10 A) (CJB) | | | 1 Ignition switch in position 0. | | | 2 Disconnect fuse F33 (10 A) (CJB). | | | 3 CHECK fuse F33 (10 A) (CJB). | | | Is the fuse OK? Yes No INSTALL a new fuse F33 (10 A) (CJB) and TEST the system for normal operation. If the fuse blows again, LOCATE and REPAIR the short to ground by using the wiring diagrams. TEST the system for normal operation. | | A5: CHECK THE VOLTAGE AT FUSE F33 (10 A) (CJB) | | | 1 Connect fuse F33 (10 A) (CJB). | | | 2 Ignition switch in position II. | | | 3 Measure the voltage between fuse F33 (10 A) (CJB) and ground. | | | Is battery voltage indicated? Yes No REPAIR the power supply of fuse F33 (10 A) (CJB) by using the wiring diagrams. TEST the system for normal operation. | | A6: CHECK THE VOLTAGE AT THE STEERING COLUMN MULTIFUNCTION SWITCH | | | 1 Ignition switch in position 0. | | | 2 Disconnect steering column multifunction switch from connector C266. | | | 3 Ignition switch in position II. | | | 4 Measure the voltage between steering column multifunction switch, connector C266, pin 8, circuit (BK/YE), wiring harness side and ground. | | | Is battery voltage indicated? Yes INSTALL a new steering column multifunction switch. TEST the system for normal operation. No - Vehicles before 05/2002: LOCATE and REPAIR the open circuit between fuse F20 (CJB) and steering column multifunction switch by using the wiring diagrams. If necessary INSTALL a new central junction box (CJB). TEST the system for normal operation. - Vehicles as of 05/2002: LOCATE and REPAIR the open circuit between fuse F33 (CJB) and steering column multifunction switch by using the wiring diagrams. If necessary INSTALL a new central junction box (CJB). TEST the system for normal operation. | | A7: CHECK FUSE F24 (30 A) (CJB) | | | 1 Ignition switch in position 0. | | | 2 Disconnect fuse F24 (30 A) (CJB). | | | 3 CHECK fuse F24 (30 A) (CJB). | | | Is the fuse OK? Yes No INSTALL a new fuse F24 (30 A) and TEST the system for normal operation. If the fuse blows again, LOCATE and REPAIR the short to ground by using the wiring diagrams. TEST the system for normal operation. | | A8: CHECK THE VOLTAGE AT FUSE F24 (30 A) (CJB) | | | 1 Connect fuse F24 (30 A) (CJB). | | | 2 Ignition switch in position II. | | | 3 Measure the voltage between fuse F24 (30 A) (CJB) and ground. | | | Is battery voltage indicated? Yes No REPAIR the power supply of fuse F24 (30 A) (CJB) by using the wiring diagrams. If necessary INSTALL a new CJB. TEST the system for normal operation. | | A9: CHECK THE VOLTAGE AT THE WINDSHIELD WIPER MOTOR | | | 1 Ignition switch in position 0. | | | 2 Disconnect windshield wiper motor from connector C612. | | | 3 Ignition switch in position II. | | | 4 Measure the voltage between windshield wiper motor, connector C612, pin 1, circuit (BK/BU), wiring harness side and ground. | | | Is battery voltage indicated? Yes No LOCATE and REPAIR the open circuit between fuse F24 (CJB) and windshield wiper motor by using the wiring diagrams. If necessary INSTALL a new central junction box (CJB). TEST the system for normal operation. | | A10: CHECK THE GROUND CONNECTION OF THE WINDSHIELD WIPER MOTOR | | | 1 Ignition switch in position 0. | | | 2 Measure the resistance between windshield wiper motor, connector C612, pin 2, circuit (BN), wiring harness side and ground. | | | Is the resistance less than 2 ohms? Yes No LOCATE and REPAIR the open circuit between windshield wiper motor and splice S182 by using the wiring diagrams. TEST the system for normal operation. | | A11: CHECK THE VOLTAGE AT THE WINDSHIELD WIPER MOTOR WITH SLOW WIPER SPEED ON | | | 1 Ignition switch in position II. | | | 2 SWITCH ON the slow wiper speed. | | | 3 Measure the voltage between windshield wiper motor, connector C612, pin 7, circuit (BU), wiring harness side and ground. | | | Is battery voltage indicated? Yes INSTALL a new windshield wiper motor. TEST the system for normal operation. No INSTALL a new steering column multifunction switch. TEST the system for normal operation. | | A12: CHECK THE VOLTAGE AT THE REAR WINDOW WIPER MOTOR | | | 1 Ignition switch in position 0. | | | 2 Disconnect rear window wiper motor from connector C308. | | | 3 Ignition switch in position II. | | | 4 Measure the voltage between rear window wiper motor, connector C308, pin 4, circuit (BK/YE), wiring harness side and ground. | | | Is battery voltage indicated? Yes No LOCATE and REPAIR open circuit between fuse F20 (CJB) and rear window wiper motor by using the wiring diagrams. TEST the system for normal operation. | | A13: CHECK THE GROUND CONNECTION OF THE REAR WINDOW WIPER MOTOR | | | 1 Ignition switch in position 0. | | | 2 Measure the resistance between rear window wiper motor, connector C308, pin 1, circuit (BN), wiring harness side and ground. | | | Is the resistance less than 2 ohms? Yes No LOCATE and REPAIR open circuit between rear window wiper motor and splice S66 by using the wiring diagrams. TEST the system for normal operation. | | A14: CHECK THE CONTROL CIRCUIT OF THE WIPER MOTOR WITH THE REAR WIPER ON | | | 1 SWITCH ON the rear window wiper. | | | 2 Measure the resistance between rear window wiper motor, connector C308, pin 2, circuit (GN/YE), wiring harness side and ground. | | | Is the resistance less than 2 ohms? Yes INSTALL a new rear window wiper motor. TEST the system for normal operation. No | | A15: CHECK THE CIRCUIT (GN/YE) AND (GN) BETWEEN REAR WINDOW WIPER MOTOR AND STEERING COLUMN MULTIFUNCTION SWITCH FOR OPEN | | | 1 Disconnect steering column multifunction switch from connector C266. | | | 2 Measure the resistance between rear window wiper motor, connector C308, pin 2, circuit (GN/YE), wiring harness side and steering column multifunction switch, connector C266, pin 4, circuit (GN/YE), wiring harness side. | | | Is the resistance less than 2 ohms? Yes No LOCATE and REPAIR open circuit (GN/YE) or (GN), between rear window wiper motor and steering column multifunction switch by using the wiring diagrams. TEST the system for normal operation. | | A16: CHECK THE GROUND CONNECTION OF THE STEERING COLUMN MULTIFUNCTION SWITCH | | | 1 Measure the resistance between steering column multifunction switch, connector C266, pin 2, circuit (BN), wiring harness side and ground. | | | Is the resistance less than 2 ohms? Yes INSTALL a new steering column multifunction switch. TEST the system for normal operation. No LOCATE and REPAIR open circuit between steering column multifunction switch and splice S78 (before 11/2002) or splice S1129 (as of 11/2002) by using the wiring diagrams. TEST the system for normal operation. | | PINPOINT TEST B : THE WIPERS WIPE CONTINUOUSLY | | TEST CONDITIONS | DETAILS/RESULTS/ACTIONS | | B1: DETERMINE THE FAULT CONDITION | | | 1 Ignition switch in position II. | | | 2 SWITCH OFF the wipers. | | | Are the windshield wipers on continuously? Yes No | | B2: CHECK THE CIRCUIT (BU/YE) AT THE WINDSHIELD WIPER MOTOR FOR SHORT TO POWER | | | 1 Ignition switch in position 0. | | | 2 Disconnect windshield wiper motor from connector C612. | | | 3 Ignition switch in position II. | | | 4 Measure the voltage between windshield wiper motor, connector C612, pin 8, circuit (BU/YE), wiring harness side and ground. | | | Is battery voltage indicated? Yes No | | B3: CHECK THE CIRCUIT (BU/YE) FOR SHORT TO POWER | | | 1 Ignition switch in position 0. | | | 2 Disconnect steering column multifunction switch from connector C266. | | | 3 Ignition switch in position II. | | | 4 Measure the voltage between windshield wiper motor, connector C612, pin 8, circuit (BU/YE), wiring harness side and ground. | | | Is battery voltage indicated? Yes LOCATE and REPAIR the short to power in circuit between steering column multifunction switch and windshield wiper motor by using the wiring diagrams. TEST the system for normal operation. No INSTALL a new steering column multifunction switch. TEST the system for normal operation. | | B4: CHECK THE CIRCUIT (BU) AT THE WINDSHIELD WIPER MOTOR FOR SHORT TO POWER | | | 1 Measure the voltage between windshield wiper motor, connector C612, pin 7, circuit (BU), wiring harness side and ground. | | | Is battery voltage indicated? Yes No | | B5: CHECK THE CIRCUIT (BU) FOR SHORT TO POWER | | | 1 Ignition switch in position 0. | | | 2 Disconnect steering column multifunction switch from connector C266. | | | 3 Ignition switch in position II. | | | 4 Measure the voltage between windshield wiper motor, connector C612, pin 7, circuit (BU), wiring harness side and ground. | | | Is battery voltage indicated? Yes LOCATE and REPAIR the short to power in circuit between steering column multifunction switch and windshield wiper motor by using the wiring diagrams. TEST the system for normal operation. No INSTALL a new steering column multifunction switch. TEST the system for normal operation. | | B6: CHECK THE CIRCUIT (BN/YE) AT THE WINDSHIELD WIPER MOTOR FOR SHORT TO POWER | | | 1 Measure the voltage between windshield wiper motor, connector C612, pin 4, circuit (BN/YE), wiring harness side and ground. | | | Is battery voltage indicated? Yes No | | B7: CHECK THE CIRCUIT (BN/YE) FOR SHORT TO POWER | | | 1 Ignition switch in position 0. | | | 2 Disconnect steering column multifunction switch from connector C266. | | | 3 Ignition switch in position II. | | | 4 Measure the voltage between windshield wiper motor, connector C612, pin 4, circuit (BN/YE), wiring harness side and ground. | | | Is battery voltage indicated? Yes LOCATE and REPAIR the short to power in circuit between steering column multifunction switch and windshield wiper motor by using the wiring diagrams. TEST the system for normal operation. No INSTALL a new steering column multifunction switch. TEST the system for normal operation. | | B8: CHECK THE CIRCUIT (GN/YE) AT THE WINDSHIELD WIPER MOTOR FOR SHORT TO POWER | | | 1 Measure the voltage between windshield wiper motor, connector C612, pin 9, circuit (GN/YE), wiring harness side and ground. | | | Is battery voltage indicated? Yes No INSTALL a new windshield wiper motor. TEST the system for normal operation. | | B9: CHECK THE CIRCUIT (GN/YE) AND (GN/RD) FOR SHORT TO POWER | | | 1 Ignition switch in position 0. | | | 2 Disconnect steering column multifunction switch from connector C266. | | | 3 Ignition switch in position II. | | | 4 Measure the voltage between windshield wiper motor, connector C612, pin 9, circuit (GN/YE), wiring harness side and ground. | | | Is battery voltage indicated? Yes LOCATE and REPAIR the short to power in circuits connected with splice S94 by using the wiring diagrams. TEST the system for normal operation. If necessary INSTALL a new central junction box (CJB). TEST the system for normal operation. No INSTALL a new steering column multifunction switch. TEST the system for normal operation. | | B10: CHECK THE CIRCUIT (GN/YE) AT THE REAR WINDOW WIPER MOTOR FOR SHORT TO GROUND | | | 1 Ignition switch in position 0. | | | 2 Disconnect rear window wiper motor from connector C308. | | | 3 Measure the resistance between rear window wiper motor, connector C308, pin 2, circuit (GN/YE), wiring harness side and ground. | | | Is the resistance greater than 10.000 ohms? Yes INSTALL a new rear window wiper motor. TEST the system for normal operation. No | | B11: CHECK THE CIRCUIT (GN/YE) AND (GN/RD) FOR SHORT TO GROUND | | | 1 Disconnect steering column multifunction switch from connector C266. | | | 2 Measure the resistance between rear window wiper motor, connector C308, pin 2, circuit (GN/YE), wiring harness side and ground. | | | Is the resistance greater than 10.000 ohms? Yes INSTALL a new steering column multifunction switch. TEST the system for normal operation. No LOCATE and REPAIR the short to ground in circuits connected with splice S94 by using the wiring diagrams. TEST the system for normal operation. If necessary INSTALL a new central junction box (CJB). TEST the system for normal operation. | | PINPOINT TEST C : THE SLOW OR FAST WIPER SPEED DOES NOT OPERATE CORRECTLY | | TEST CONDITIONS | DETAILS/RESULTS/ACTIONS | | C1: DETERMINE THE FAULT CONDITION | | | 1 Ignition switch in position II. | | | 2 SWITCH through all wiper speeds (slow/fast). | | | 3 CHECK the windshield wipers. | | | Is the slow wiper speed inoperative? Yes No Fast wiper speed is inoperative: GO to C4. | | C2: CHECK THE VOLTAGE AT THE WINDSHIELD WIPER MOTOR WITH THE SLOW WIPER SPEED ON | | | 1 Ignition switch in position 0. | | | 2 Disconnect windshield wiper motor from connector C612. | | | 3 Ignition switch in position II. | | | 4 SWITCH ON the slow wipe speed. | | | 5 Measure the voltage between windshield wiper motor, connector C612, pin 7, circuit (BU), wiring harness side and ground. | | | Is battery voltage indicated? Yes INSTALL a new windshield wiper motor. TEST the system for normal operation. No | | C3: CHECK THE CIRCUIT (BU) AT THE WINDSHIELD WIPER MOTOR FOR OPEN | | | 1 Ignition switch in position 0. | | | 2 Disconnect steering column multifunction switch from connector C266. | | | 3 Measure the resistance between steering column multifunction switch, connector C266, pin 1, circuit (BU), wiring harness side and windshield wiper motor, connector C612, pin 7, circuit (BU), wiring harness side. | | | Is the resistance less than 2 ohms? Yes INSTALL a new steering column multifunction switch. TEST the system for normal operation. No LOCATE and REPAIR the open circuit between windshield wiper motor and steering column multifunction switch by using the wiring diagrams. TEST the system for normal operation. | | C4: CHECK THE VOLTAGE AT THE WIPER MOTOR WITH THE FAST WIPER SPEED ON | | | 1 Ignition switch in position 0. | | | 2 Disconnect windshield wiper motor from connector C612. | | | 3 Ignition switch in position II. | | | 4 SWITCH ON the fast wiper speed. | | | 5 Measure the voltage between windshield wiper motor, connector C612, pin 8, circuit (BU/YE), wiring harness side and ground. | | | Is battery voltage indicated? Yes INSTALL a new windshield wiper motor. TEST the system for normal operation. No | | C5: CHECK THE CIRCUIT (BU/YE) FOR OPEN | | | 1 Ignition switch in position 0. | | | 2 Disconnect steering column multifunction switch from connector C266. | | | 3 Measure the resistance between windshield wiper motor, connector C612, pin 8, circuit (BU/YE), wiring harness side and steering column multifunction switch, connector C266, pin 6, circuit (BU/YE), wiring harness side. | | | Is the resistance less than 2 ohms? Yes INSTALL a new steering column multifunction switch. TEST the system for normal operation. No LOCATE and REPAIR the open circuit between windshield wiper motor and steering column multifunction switch by using the wiring diagrams. TEST the system for normal operation. | | PINPOINT TEST D : THE INTERMITTENT WIPER SPEED DOES NOT OPERATE CORRECTLY (SLOW/FAST SPEED IS OK) | | TEST CONDITIONS | DETAILS/RESULTS/ACTIONS | | D1: DETERMINE THE FAULT CONDITION | | | 1 Ignition switch in position II. | | | 2 SWITCH ON the intermittent wiper speed. | | | Is the intermittent wiper speed inoperative? Yes No The variable intermittent wipe does not operate correctly: GO to D4. | | D2: CHECK THE CONTROL VOLTAGE AT THE WINDSHIELD WIPER MOTOR WITH THE INTERMITTENT WIPE ON | | | 1 Ignition switch in position 0. | | | 2 Disconnect windshield wiper motor from connector C612. | | | 3 Ignition switch in position II. | | | 4 SWITCH ON the intermittent wiper. | | | 5 Measure the voltage between windshield wiper motor, connector C612, pin 4, circuit (BN/YE), wiring harness side and ground. | | | Is battery voltage indicated? Yes INSTALL a new windshield wiper motor. TEST the system for normal operation. No | | D3: CHECK THE CIRCUIT (BN/YE) AT THE WINDSHIELD WIPER MOTOR FOR OPEN | | | 1 Ignition switch in position 0. | | | 2 Disconnect steering column multifunction switch from connector C266. | | | 3 Measure the resistance between windshield wiper motor, connector C612, pin 4, circuit (BN/YE), wiring harness side and steering column multifunction switch, connector C266, pin 7, circuit (BN/YE), wiring harness side. | | | Is the resistance less than 2 ohms? Yes INSTALL a new steering column multifunction switch. TEST the system for normal operation. No LOCATE and REPAIR the open circuit between windshield wiper motor and steering column multifunction switch by using the wiring diagrams. TEST the system for normal operation. | | D4: CHECK THE CONTROL VOLTAGE AT THE STEERING COLUMN MULTIFUNCTION SWITCH WITH THE INTERMITTENT WIPE ON | | | 1 Ignition switch in position 0. | | | 2 Disconnect steering column multifunction switch from connector C260. | | | 3 Ignition switch in position II. | | | 4 SWITCH ON the intermittent wipe. | | | 5 Measure the voltage between steering column multifunction switch, connector C260, pin 6, circuit (RD/GN), wiring harness side and ground. | | | Is battery voltage indicated? Yes No | | D5: CHECK THE VOLTAGE AT THE STEERING COLUMN MULTIFUNCTION SWITCH | | | 1 SWITCH ON the intermittent wipe. | | | 2 Measure the voltage at the steering column multifunction switch, connector C260, between pin 6, circuit (RD/GN) and pin 5, circuit (BN), wiring harness side. | | | Is battery voltage indicated? Yes INSTALL a new steering column multifunction switch. TEST the system for normal operation. No LOCATE and REPAIR the open circuit (BN), between steering column multifunction switch and splice S78 (before 11/2002) or splice S1129 (as of 11/2002) by using the wiring diagrams. TEST the system for normal operation. | | D6: CHECK THE CIRCUIT (RD/GN) AT THE STEERING COLUMN MULTIFUNCTION SWITCH FOR OPEN | | | 1 Ignition switch in position 0. | | | 2 Measure the resistance between windshield wiper motor, connector C612, pin 10, circuit (RD/GN), wiring harness side and steering column multifunction switch, connector C260, pin 6, circuit (RD/GN), wiring harness side. | | | Is the resistance less than 2 ohms? Yes INSTALL a new windshield wiper motor. TEST the system for normal operation. No LOCATE and REPAIR the open circuit between steering column multifunction switch and windshield wiper motor by using the wiring diagrams. TEST the system for normal operation. | | PINPOINT TEST E : THE WASH AND WIPE FUNCTION IS INOPERATIVE | | TEST CONDITIONS | DETAILS/RESULTS/ACTIONS | | E1: DETERMINE THE FAULT CONDITION | | | 1 Ignition switch in position II. | | | 2 ACTUATE the front and rear washer. | | | Is the front or the rear wash and wipe function inoperative? Yes INSTALL a new steering column multifunction switch. TEST the system for normal operation. No Front and rear wash and wipe functions are inoperative: GO to E2. | | E2: CHECK THE STEERING COLUMN MULTIFUNCTION SWITCH | | | 1 Ignition switch in position 0. | | | 2 Disconnect steering column multifunction switch from connector C266. | | | 3 Connect a fused jumper wire (10 A) at the steering column multifunction switch, connector C266: - between pin 4, circuit (GN/YE) and pin 8, circuit (BK/YE), wiring harness side.
- between pin 2, circuit (BN) and pin 5, circuit (BN/YE), wiring harness side.
| | | 4 Ignition switch in position II. | | | Is the front wash/wipe function operative? Yes INSTALL a new steering column multifunction switch. TEST the system for normal operation. No | | E3: CHECK THE GROUND CONNECTION OF THE STEERING COLUMN MULTIFUNCTION SWITCH | | | 1 Ignition switch in position 0. | | | 2 Measure the resistance between steering column multifunction switch, connector C266, pin 2, circuit (BN), wiring harness side and ground. | | | Is the resistance less than 2 ohms? Yes No LOCATE and REPAIR the open circuit (BN), between steering column multifunction switch and splice S78 (before 11/2002) or splice S1129 (as of 11/2002) by using the wiring diagrams. TEST the system for normal operation. | | E4: CHECK THE CIRCUIT (GN/YE) BETWEEN STEERING COLUMN MULTIFUNCTION SWITCH AND SPLICE S94 FOR OPEN | | | 1 Disconnect rear window wiper motor from connector C308. | | | 2 Measure the resistance between rear window wiper motor, connector C308, pin 2, circuit (GN/YE), wiring harness side and steering column multifunction switch, connector C266, pin 4, circuit (GN/YE), wiring harness side. | | | Is the resistance less than 2 ohms? Yes LOCATE and REPAIR the open circuit (BN/YE), between steering column multifunction switch and splice S93 by using the wiring diagrams. TEST the system for normal operation. No LOCATE and REPAIR the open circuit (GN/YE), between steering column multifunction switch and splice S94 by using the wiring diagrams. TEST the system for normal operation. | | PINPOINT TEST F : THE WIPERS DO NOT OPERATE CORRECTLY WITH THE WASHER FUNCTION (WIPE FUNCTION IS OK) | | TEST CONDITIONS | DETAILS/RESULTS/ACTIONS | | F1: DETERMINE THE FAULT CONDITION | | | 1 Ignition switch in position II. | | | 2 ACTUATE the front and rear washer. | | | Do the windshield wipers operate with the washer function? Yes The rear window wiper is inoperative: GO to F3. No | | F2: CHECK THE VOLTAGE AT THE WINDSHIELD WIPER MOTOR WITH THE WINDSHIELD WASHER ON | | | 1 Ignition switch in position 0. | | | 2 Disconnect windshield wiper motor from connector C612. | | | 3 Ignition switch in position II. | | | 4 SWITCH ON the windshield washer. | | | 5 Measure the voltage between windshield wiper motor, connector C612, pin 9, circuit (GN/YE), wiring harness side and ground. | | | Is battery voltage indicated? Yes INSTALL a new windshield wiper motor. TEST the system for normal operation. No LOCATE and REPAIR the open circuit (GN/YE), between splice S94 and windshield wiper motor by using the wiring diagrams. TEST the system for normal operation. | | F3: CHECK THE VOLTAGE AT THE REAR WINDOW WIPER MOTOR WITH THE REAR WASHER ON | | | 1 Ignition switch in position 0. | | | 2 Disconnect rear window wiper motor from connector C308. | | | 3 Ignition switch in position II. | | | 4 SWITCH ON the rear washer. | | | 5 Measure the voltage between rear window wiper motor, connector C308, pin 3, circuit (BN/YE), wiring harness side and ground. | | | Is battery voltage indicated? Yes INSTALL a new rear window wiper motor. TEST the system for normal operation. No LOCATE and REPAIR the open circuit (BN/YE) or (GN), between rear window wiper motor and splice S93 by using the wiring diagrams. TEST the system for normal operation. | | PINPOINT TEST G : THE WASHER PUMP IS INOPERATIVE (WIPE FUNCTION IS OK) | | TEST CONDITIONS | DETAILS/RESULTS/ACTIONS | | G1: CHECK THE WASHER PUMP MOTOR | | | 1 Ignition switch in position 0. | | | 2 Disconnect washer pump motor from connector C374. | | | 3 Ignition switch in position II. | | | 4 SWITCH ON the windshield washer and hold the switch during the measurement. | | | 5 Measure the voltage at the washer pump motor: - Vehicles before 05/2004: connector C374, between pin 1, circuit (GN/RD) and pin 2, circuit (BN/YE), wiring harness side.
- Vehicles as of 05/2004: connector C374, between pin 1, circuit (GN/YE) and pin 2, circuit (BN/YE), wiring harness side.
| | | Is battery voltage indicated? Yes INSTALL a new washer pump motor. TEST the system for normal operation. No | | G2: CHECK THE VOLTAGE AT THE WASHER PUMP MOTOR WITH THE WINDSHIELD WASHER ON | | | 1 SWITCH ON the windshield washer and hold the switch during the measurement. | | | 2 Measure the voltage between washer pump motor: - Vehicles before 05/2004: connector C374, pin 1, circuit (GN/RD), wiring harness side and ground.
- Vehicles as of 05/2004: connector C374, pin 1, circuit (GN/YE), wiring harness side and ground.
| | | Is battery voltage indicated? Yes LOCATE and REPAIR the open circuit (BN/YE), between washer pump motor and splice S93 by using the wiring diagrams. TEST the system for normal operation. No LOCATE and REPAIR the open circuit between washer pump motor and splice S94 by using the wiring diagrams. TEST the system for normal operation. | | PINPOINT TEST H : THE HEADLAMP WASHER FUNCTION DOES NOT OPERATE CORRECTLY | | TEST CONDITIONS | DETAILS/RESULTS/ACTIONS | | H1: CHECK FUSE F11 (CJB) | | | 1 Ignition switch in position 0. | | | 2 Disconnect fuse F11. - without trailer socket: (20 A) (CJB)
- with trailer socket: (25 A) (CJB)
| | | 3 CHECK fuse F11. - without trailer socket: (20 A) (CJB)
- with trailer socket: (25 A) (CJB)
| | | Is the fuse OK? Yes No INSTALL a new fuse F11 (20 A)/(25 A) (CJB) and TEST the system for normal operation. If the fuse blows again, LOCATE and REPAIR the short to ground by using the wiring diagrams. TEST the system for normal operation. | | H2: CHECK THE VOLTAGE AT FUSE F11 (CJB) | | | 1 Connect fuse F11. - without trailer socket: (20 A) (CJB)
- with trailer socket: (25 A) (CJB)
| | | 2 Ignition switch in position II. | | | 3 Measure the voltage between fuse F11 and ground. - without trailer socket: (20 A) (CJB)
- with trailer socket: (25 A) (CJB)
| | | Is battery voltage indicated? Yes No LOCATE and REPAIR the power supply of fuse F11 (CJB) by using the wiring diagrams. If necessary INSTALL a new CJB. TEST the system for normal operation. | | H3: CHECK THE VOLTAGE AT THE HEADLAMP WASHER PUMP RELAY | | | 1 Ignition switch in position 0. | | | 2 Disconnect headlamp washer pump relay from socket C18. | | | 3 Ignition switch in position II. | | | 4 Measure the voltage between headlamp washer pump relay, socket C18, pin 8, circuit (RD), CJB-side and ground. | | | Is battery voltage indicated? Yes No LOCATE and REPAIR the open circuit between fuse F11 (CJB) and headlamp washer pump relay by using the wiring diagrams. If necessary INSTALL a new central junction box (CJB). TEST the system for normal operation. | | H4: CHECK THE HEADLAMP WASHER PUMP RELAY | | | 1 Ignition switch in position 0. | | | 2 Connect a fused jumper wire (20 A) at the headlamp washer pump relay, socket C18, between pin 8, circuit (RD) and pin 2, circuit (RD), CJB-side. | | | 3 Ignition switch in position II. | | | Does the headlamp washer pump operate? Yes No | | H5: CHECK THE VOLTAGE AT THE HEADLAMP WASHER PUMP | NOTE:Make sure that the jumper wire at the headlamp washer pump relay is still connected. | | | 1 Ignition switch in position 0. | | | 2 Disconnect headlamp washer pump from connector C201. | | | 3 Ignition switch in position II. | | | 4 Measure the voltage between headlamp washer pump, connector C201, pin 2, circuit (RD), wiring harness side and ground. | | | Is battery voltage indicated? Yes No LOCATE and REPAIR the open circuit between headlamp washer pump and headlamp washer pump relay by using the wiring diagrams. TEST the system for normal operation. | | H6: CHECK THE GROUND CONNECTION OF THE HEADLAMP WASHER PUMP | | | 1 Ignition switch in position 0. | | | 2 Measure the resistance between headlamp washer pump, connector C201, pin 1, circuit (BN), wiring harness side and ground. | | | Is the resistance less than 2 ohms? Yes INSTALL a new headlamp washer pump. TEST the system for normal operation. No LOCATE and REPAIR the open circuit between headlamp washer pump and splice S22 by using the wiring diagrams. TEST the system for normal operation. | | H7: CHECK THE VOLTAGE AT THE HEADLAMP WASHER PUMP RELAY | | | 1 Ignition switch in position II. | | | 2 SWITCH ON the low beam. | | | 3 Measure the voltage between headlamp washer pump relay, socket C18, pin 5, circuit (WH/BK), CJB-side and ground. | | | Is battery voltage indicated? Yes No | | H8: CHECK THE VOLTAGE AT THE HEADLAMP SWITCH | | | 1 Ignition switch in position 0. | | | 2 Disconnect headlamp switch from connector C168. | | | 3 Ignition switch in position II. | | | 4 Measure the voltage between headlamp switch: - Vehicles before 05/2004: connector C168, pin 15, circuit (RD/YE), wiring harness side and ground.
- Vehicles as of 05/2004: connector C168, pin 15, circuit (RD), wiring harness side and ground.
| | | Is battery voltage indicated? Yes No LOCATE and REPAIR the open circuit between splice S226 and headlamp switch by using the wiring diagrams. TEST the system for normal operation. | | H9: CHECK THE CIRCUIT BETWEEN HEADLAMP SWITCH AND HEADLAMP WASHER PUMP RELAY | | | 1 Ignition switch in position 0. | | | 2 Measure the resistance between headlamp switch, connector C168, pin 11, circuit (WH/BK), wiring harness side and headlamp washer pump relay, socket C18, pin 5, circuit (WH/BK), wiring harness side. | | | Is the resistance less than 2 ohms? Yes INSTALL a new headlamp switch. TEST the system for normal operation. No LOCATE and REPAIR the open circuit between headlamp switch and headlamp washer pump relay by using the wiring diagrams. TEST the system for normal operation. | | H10: CHECK THE VOLTAGE AT THE CONTROL CIRCUIT OF THE HEADLAMP WASHER PUMP RELAY | | | 1 SWITCH ON the windshield washer and hold the switch during the measurement. | | | 2 Measure the voltage between headlamp washer pump relay, socket C18, pin 4, circuit (GN/RD), CJB-side and ground. | | | Is battery voltage indicated? Yes No | | H11: CHECK THE GROUND CONNECTION OF THE HEADLAMP WASHER PUMP RELAY | | | 1 Ignition switch in position 0. | | | 2 Measure the resistance between headlamp washer pump relay, socket C18, pin 6, circuit (BN), CJB-side and ground. | | | Is the resistance less than 2 ohms? Yes INSTALL a new headlamp washer pump relay. TEST the system for normal operation. No LOCATE and REPAIR the open circuit between headlamp washer pump relay and splice S21 by using the wiring diagrams. TEST the system for normal operation. | | H12: CHECK THE VOLTAGE AT THE HEADLAMP CLEANING RELAY | | | 1 Ignition switch in position 0. | | | 2 Disconnect headlamp cleaning relay from socket C17. | | | 3 Ignition switch in position II. | | | 4 Measure the voltage between headlamp cleaning relay, socket C17, pin 2, circuit (RD), CJB-side and ground. | | | Is battery voltage indicated? Yes No LOCATE and REPAIR the open circuit between splice S32 and headlamp cleaning relay by using the wiring diagrams. TEST the system for normal operation. | | H13: CHECK THE POWER CIRCUIT OF THE HEADLAMP CLEANING RELAY | | | 1 Ignition switch in position 0. | | | 2 Connect a jumper wire (5 A) at the headlamp cleaning relay, socket C17, between pin 2 circuit (RD) and pin 5, circuit (GN/RD), CJB-side. | | | 3 Ignition switch in position II. | | | 4 Measure the voltage between headlamp washer pump relay, socket C18, pin 4, circuit (GN/RD), CJB-side and ground. | | | Is battery voltage indicated? Yes No LOCATE and REPAIR the open circuit between headlamp cleaning relay and headlamp washer pump relay by using the wiring diagrams. TEST the system for normal operation. | | H14: CHECK THE VOLTAGE AT THE HEADLAMP CLEANING RELAY | | | 1 SWITCH ON the windshield washer and hold the switch during the measurement. | | | 2 Measure the voltage between headlamp cleaning relay, socket C17, pin 4, circuit (GN/YE), CJB-side and ground. | | | Is battery voltage indicated? Yes No LOCATE and REPAIR the open circuit between splice S94 and headlamp cleaning relay by using the wiring diagrams. TEST the system for normal operation. | | H15: CHECK THE HEADLAMP CLEANING RELAY | | | 1 Ignition switch in position 0. | | | 2 SWITCH ON the windshield washer and hold the switch during the measurement. | | | 3 Measure the resistance between headlamp cleaning relay, socket C17, pin 6, circuit (BN/YE), CJB-side and ground. | | | Is the resistance less than 2 ohms? Yes INSTALL a new headlamp cleaning relay. TEST the system for normal operation. No LOCATE and REPAIR the open circuit between headlamp cleaning relay and splice S93 by using the wiring diagrams. TEST the system for normal operation. | | PINPOINT TEST I : THE WINDSHIELD WASHER JET HEATER(S) IS/ARE INOPERATIVE | | TEST CONDITIONS | DETAILS/RESULTS/ACTIONS | | I1: DETERMINE THE FAULT CONDITION | | | 1 Ignition switch in position II. | | | 2 CHECK the windshield washer jet heater. | | | Are both windshield washer jet heater inoperative? Yes LOCATE and REPAIR the open in circuit (BK/GY) between splice S44 and splice S136 by using the wiring diagrams. TEST the system for normal operation. No - The windshield washer jet heater, left-hand side is inoperative: GO to I2. - The windshield washer jet heater, right-hand side is inoperative: GO to I4. | | I2: CHECK THE VOLTAGE AT THE WINDSHIELD WASHER JET HEATER, LEFT-HAND SIDE | | | 1 Ignition switch in position 0. | | | 2 Disconnect windshield washer jet heater from connector C335. | | | 3 Ignition switch in position II. | | | 4 Measure the voltage between windshield washer jet heater, left-hand side, connector C335, pin 3, circuit (BK/GY) wiring harness side and ground. | | | Is battery voltage indicated? Yes No LOCATE and REPAIR the open circuit between connector C335, pin 3 and splice S136 by using the wiring diagrams. TEST the system for normal operation. | | I3: CHECK THE GROUND CONNECTION OF THE WINDSHIELD WASHER JET HEATER, LEFT-HAND SIDE | | | 1 Ignition switch in position 0. | | | 2 Measure the resistance between windshield washer jet heater, left-hand side, connector C335, pin 4, circuit (BN), wiring harness side and ground. | | | Is the resistance less than 2 ohms? Yes INSTALL a new windshield washer jet heater, left-hand side. TEST the system for normal operation. No LOCATE and REPAIR the open in circuit between connector C335, pin 4 and splice S78 (before 11/2002) or splice S85 (as of 11/2002) by using the wiring diagrams. TEST the system for normal operation. | | I4: CHECK THE VOLTAGE AT THE WINDSHIELD WASHER JET HEATER, RIGHT-HAND SIDE | | | 1 Ignition switch in position 0. | | | 2 Disconnect windshield washer jet heater from connector C335. | | | 3 Ignition switch in position II. | | | 4 Measure the voltage between windshield washer jet heater, right-hand side, connector C335, pin 1, circuit (BK/GY) wiring harness side and ground. | | | Is battery voltage indicated? Yes No LOCATE and REPAIR the open in circuit between connector C335, pin 1 and splice S136 by using the wiring diagrams. TEST the system for normal operation. | | I5: CHECK THE GROUND CONNECTION OF THE WINDSHIELD WASHER JET HEATER, RIGHT-HAND SIDE | | | 1 Ignition switch in position 0. | | | 2 Measure the resistance between windshield washer jet heater, right-hand side, connector C335, pin 2, circuit (BN), wiring harness side and ground. | | | Is the resistance less than 2 ohms? Yes INSTALL a new windshield washer jet heater, right-hand side. TEST the system for normal operation. No LOCATE and REPAIR the open in circuit between connector C335, pin 2 and splice S78 (before 11/2002) or splice S85 (as of 11/2002) by using the wiring diagrams. TEST the system for normal operation. | |
