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.

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 input circuit or the ETACS-ECU may be defective.

PROBABLE CAUSES

  • Malfunction of the inhibitor switch
  • Malfunction of ETACS-ECU
  • Malfunctions of the wiring harness and connectors

DIAGNOSIS 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 data list

  • Check the input signal related to the rear wiper operation.
  • Ignition switch: ON
  • Move the selector lever to the "R" (reverse) position.
Item No.
 Item name
 Normal conditions
Item 289
 Backup lamp or shift reveres SW
 ON
OK: Normal condition is displayed.

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 ).
Go to Step 3.

STEP 3. 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.