INSPECTION PROCEDURE 3: When the selector lever is moved to "R" position during the rear wiper operation, the rear wiper does not operate at the continuous mode.

caution

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

OPERATION

The ETACS-ECU determines whether the shift position is at "R" or not according to the shift position signal which is sent by the Combination meter.

COMMENTS ON TROUBLE SYMPTOM

If the rear wiper does not operate continuously when the selector lever is moved to the R position during the rear wiper operation, the shift position signal circuit or the ETACS-ECU may be defective.

PROBABLE CAUSES

Malfunction of ETACS-ECU
Malfunctions of the wiring harness and connectors

DIAGNOSTIC PROCEDURE

STEP 1. Check the operation of the rear wiper.

Check that the rear wiper system works normally by operating the rear wiper switch.

Q. Is the check result normal?

	Go to Step 2.

	Refer to Inspection Procedure 1 "Rear wiper does not work at all ."

STEP 2. M.U.T.-III CAN bus diagnostics

Use the M.U.T.-III to diagnose the CAN bus lines.

Q. Is the CAN bus normal?

	Go to Step 3.

	Repair the CAN bus line (Refer to GROUP 54C - Diagnosis ).

STEP 3. M.U.T.-III other system diagnosis code

Check that the Combination meter sets a diagnosis code.

Q. Is the diagnosis code set?

	Diagnose the Combination meter (Refer to GROUP 54A - Diagnosis Code Chart ).

	Go to Step 4.

STEP 4. Retest the system.

Check that the rear wiper operates continuously when the selector lever is moved to the R position during the rear wiper operation.

Q. Is the check result normal?

	Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).

	Replace the ETACS-ECU.