INSPECTION PROCEDURE 4: The rear washer does not work normally.


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

COMMENTS ON TROUBLE SYMPTOM
The input circuit from the rear washer switch, the washer motor or ETACS-ECU may be defective.

PROBABLE CAUSES

  • Defective washer motor
  • Defective column switch
  • Malfunction of ETACS-ECU
  • Malfunctions of the wiring harness and connectors

DIAGNOSTIC PROCEDURE

STEP 1. Check that the windshield washers work.
Check that the windshield washers work normally.

Q. Is the check result normal?
Go to Step 2.
Refer to Inspection Procedure 7 "Windshield washers do not work normally ."

STEP 2. M.U.T.-III diagnosis code
Check if an ETACS-related diagnosis code is set.

Q. Is the diagnosis code set?
Troubleshoot the ETACS. Refer to .
Go to Step 3.

STEP 3. M.U.T.-III data list
Check the input signal related to the rear washer operation.

  • Ignition switch: ACC
  • Rear washer switch: ON
Item No.
 Item name
 Normal conditions
Item 238
 Rear washer
 ON
OK: Normal condition is displayed.

Q. Is the check result normal?
Go to Step 4.
Refer to GROUP 54A - ETACS, Inspection Procedure 12 "The column switch signal is not received ."

STEP 4. Check the washer motor.
Check that the washer motor works normally (Refer to ).

Q. Is the check result normal?
Go to Step 5.
Replace the washer motor.

STEP 5. Retest the system.
Check that the rear washer works normally.

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.