Inspection Procedure 5: Rear Pnael Power Window Timer Function does not Work Normally.

caution

Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM

If the rear panel power window timer function does not work, the input circuit from the ignition switch (IG1) or the driver’s door switch, the communication lines between the ETACS-ECU and the rear panel power window-ECU, the rear panel power window-ECU or the ETACS-ECU may be defective.

PROBABLE CAUSES

Malfunction of ETACS-ECU
Malfunction of the rear panel power window-ECU
Malfunction of the power window main switch
Malfunction of the rear panel power window switch
Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code.

When the ignition switch is turned to the "ON" position, check that the ETACS-ECU does not set the diagnosis code.

Q. Is the diagnosis code set?

	Refer to .

	Go to Step 2.

STEP 2. Check the rear panel power window.

Check that the rear panel power window can operate by means of the rear panel power window switch.

Q. Is the check result normal?

	Go to Step 3.

	Refer to .

STEP 3. Check the power window timer function.

Check that the power window timer function works normally.

Q. Is the check result normal?

	Go to Step 4.

	Refer to .

STEP 4. Retest the system.

Check that the rear panel power window timer function work normally.

Q. Is the check result normal?

	The trouble can be an intermittent malfunction (Refer to GROUP 00, How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).

	Replace the rear panel power window-ECU.