Tribute 2WD L4-2.5L (2009)
Torque Converter: Component Tests and General Diagnostics
Torque Converter Contamination Inspection
TORQUE CONVERTER CONTAMINATION INSPECTION
CAUTION:Do not use water-based cleaners or mineral spirits to clean or flush the torque converter or transaxle damage will occur. Use only clean
transaxle fluid designated for the transaxle and converter being serviced.
1. If a new or remanufactured torque converter is not being installed, the following steps must be completed.
2. With the torque converter on a bench, pour a small amount of transaxle fluid from the torque converter onto an absorbent white tissue or through a
paper filter and examine the transaxle fluid.
3. With the torque converter on a bench, pour a small amount of transaxle fluid from the torque converter onto an absorbent white tissue or through a
paper filter and examine the transaxle fluid.
4. Examine the stain on the tissue for evidence of particles (spec of any kind). If particles are present in the transaxle fluid, a new torque converter
must be installed.
5. If there are no particles or contamination present, drain the remainder of the transaxle fluid from the torque converter.
6. Add 1.9L (2 qt) of clean transaxle fluid into the converter and agitate by hand.
7. Thoroughly drain the transaxle fluid.
Torque Converter Diagnosis
TORQUE CONVERTER DIAGNOSIS
Prior to torque converter installation, all diagnostic procedures must be followed. This is to prevent the unnecessary installation of new or
remanufactured torque converters. Only after a complete diagnostic evaluation can the decision be made to install a new or remanufactured torque
converter.Begin with the normal diagnostic procedures as follows:
1. Preliminary Inspection.
2. Know and Understand the Customer's Concern.
3. Verify the Concern - Carry out the Torque Converter Operation Test.
4. Carry out Diagnostic Procedures.
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Carry out the On-Board Diagnostics.
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Repair all non-transaxle related DTCs first.
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Repair all transaxle DTCs.
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Rerun on-board diagnostics to verify repair.
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Carry out the Line Pressure Test. See See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Special Testing Procedures.
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Carry out the Stall Speed Test. See See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Special Testing Procedures.
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Carry out Diagnosis by Symptom Routines. See See: Transmission Control Systems/Testing and Inspection/Symptom Related Diagnostic
Procedures/Diagnosis By Symptom.
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Use the index to locate the appropriate routine that best describes the symptom(s). The routine will list all possible components that may
cause or contribute to the symptom. Check each component listed, diagnose and repair as required, before repairing the torque converter.
Operation Test
This test verifies that the torque converter clutch control system and the torque converter are operating correctly.
1. Carry out Self Test, refer to the tester manual. Check for DTCs.
2. Connect a tachometer to the engine.
3. Bring the engine to normal operating temperature by driving the vehicle at highway speeds for approximately 15 minutes in the (D) position.
4. Engine rpm should increase when the brake pedal is tapped, and should decrease about 5 seconds after the brake pedal is released. If this does not
occur, refer to Torque Converter Operation Concerns, see See: Transmission Control Systems/Testing and Inspection/Symptom Related
