JUDDER UPON TORQUE CONVERTER CLUTCH (TCC) OPERATION [FW6A-EL]
id050315101900
|
TROUBLESHOOTING ITEM |
Judder upon torque converter clutch (TCC) operation |
|---|---|
|
DESCRIPTION
|
• Vehicle jolts when TCC is engaged.
|
|
POSSIBLE CAUSE
|
1. Signal malfunction
2. Poor GND
3. Torque converter malfunction
|
Diagnostic procedure
|
STEP |
INSPECTION |
ACTION |
|
|---|---|---|---|
|
1
|
VERIFY MALFUNCTION SYMPTOM
• Is the malfunction symptom at the same level compared to a vehicle of the same model?
|
Yes
|
Symptom troubleshooting is completed.
|
|
No
|
Go to the next step.
|
||
|
2
|
INSPECT SIGNAL PARTS FOR MALFUNCTION
• Inspect the value at the following PCM PIDs using the M-MDS.
• Is there any malfunction?
|
Yes
|
Repair or replace any malfunctioning parts according to the inspection result.
|
|
No
|
Go to the next step.
|
||
|
3
|
VERIFY IF MALFUNCTION CAUSE IS TCM GND OR TORQUE CONVERTER
• Switch the ignition to off.
• Disconnect the TCM connector.
• Visually inspect for pin deformity, open circuit, or wiring harness non-insulation between TCM terminal 1B and body GND.
• Is there any malfunction?
|
Yes
|
Repair or replace any malfunctioning parts according to the inspection result.
|
|
No
|
Replace the automatic transaxle.
|
||