Inspection Procedure 5: The windshield intermittent wiper interval cannot be adjusted by operating the windshield intermittent wiper volume control.


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

COMMENTS ON TROUBLE SYMPTOM


The column switch or the ETACS-ECU may be defective.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code.
Check if an ETACS-related diagnosis code is set.

Q. Is the diagnosis code set?
Diagnose the ETACS. (Refer to GROUP 54A - ETACS, Trouble Symptom Chart .)
Go to Step 2.

STEP 2. Check the ETACS customisation function.
By the ETACS customisation function, confirm that "vehicle speed dependent wiper function" has been enabled.

Q. Is the check result normal?
Go to Step 3.
By the ETACS customisation function, enable the "vehicle speed dependent wiper function." Refer to .

STEP 3. System retest
Check that the windshield wiper interval changes when the windshield wiper volume control is rotated.

Q. Is the check result normal?
Intermittent malfunction. Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points, - How to Cope with Intermittent Malfunctions .)
Replace the ETACS-ECU (Refer to GROUP 54A - ETACS, ETACS-ECU ).