Inspection Procedure 15: Vibration
COMMENTS ON TROUBLE SYMPTOM
If vibration occurs when driving at constant speed or when acceleration in high range, the cause is probably an abnormal torque converter pressure, or a malfunction of the engine system, damper clutch solenoid valve, valve body or torque converter.
PROBABLE CAUSES
  • Malfunction of damper clutch solenoid valve
  • Malfunction of engine system
  • Abnormal torque converter pressure
  • Malfunction of valve body
  • Malfunction of torque converter
  • Malfunction of the engine-A/T-ECU
DIAGNOSIS PROCEDURE
STEP 2. Engine system check
Refer to GROUP 13A, Troubleshooting
<4G63>, GROUP 13B, Troubleshooting <4G64>, Refer to GROUP 13C, Troubleshooting <4G69>.
Q: Is the check result normal?
YES:  The inspection is complete.
NO:  Repair the engine system.
STEP 4. Torque converter check
Check for damaged drive plate, incorrect installation in the input shaft (inserted at an angle), damaged splines or damper clutch sealing.
Q: Is the check result normal?
YES:  Go to Step 5
.
NO:  If repair is possible, repair the damaged part. If repair is not possible because the splines on the drive plate or torque converter are damaged, replace it.
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