Inspection Procedure 27: Shock is significant at accelerator ON/OFF (when no shift change is performed)

COMMENTS ON TROUBLE SYMPTOM

During driving, if a strong shock occurs when the accelerator pedal is operated (when no shift change is performed), the cause is probably an immixing of A/T fluid other than the specified one, a malfunction of the mounting (engine mounting and transmission mounting insulator), or valve body.

PROBABLE CAUSES

Malfunction of mounting (engine mounting and transmission mounting insulator)
Immixing of A/T fluid other than the specified one
Malfunction of valve body
A/T internal error (clutches, brakes, etc.)

DIAGNOSIS PROCEDURE

STEP 1. Mounting check

Check the engine mounting and transmission mounting insulator for damage and any faults.

Q. Is the check result normal?

	Go to Step 2.

	Repair or replace the engine mounting and transmission mounting insulator.

STEP 2. A/T fluid change

Replace the A/T fluid. Then, check the trouble symptom again.

Q. Is the trouble symptom reproduced?

	Go to Step 3.

	This diagnosis is complete.

STEP 3. Valve body replacement

Replace the valve body. Then, check the trouble symptom again.

Q. Is the trouble symptom reproduced?

	Check the clutches and brakes for damage, and replace if necessary.

	This diagnosis is complete.