Inspection Procedure 15: Vibration


COMMENTS ON TROUBLE SYMPTOM



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 A/T-ECU

DIAGNOSIS PROCEDURE

STEP 1. Check when the vibration occurs.

Q. Does the vibration occur when the damper clutch is operating?
Go to Step 3.
Go to Step 2.

STEP 2. Engine system check

Q. Is the check result normal?
The inspection is complete.
Repair the engine system.

STEP 3. A/T-ECU replacement
(1)Replace the A/T-ECU.
(2)Test drive the vehicle.
(3)Verify that the condition described by the customer exists.

Q. Does a malfunction take place again?
Go to Step 4.
The inspection is complete.

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?
Go to Step 5.
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.

STEP 5. Valve body disassembly clean and assembly
Check the bolts for looseness and the O-ring, solenoid valve and valve body for damage.

Q. Is the check result normal?
The inspection is complete.
Replace the valve body assembly if the damages are thought to be irreparable.