Inspection Procedure 11: The comfort washing function does not work normally.


caution Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.

COMMENTS ON TROUBLE SYMPTOM


If the comfort washer function does not work normally, the windshield wiper switch input circuit(s), the windshield washer switch input circuit(s) and ETACS-ECU may have a problem.
note Without function as a default (Refer to .)

PROBABLE CAUSES



DIAGNOSIS PROCEDURE


STEP 1. Check the ETACS-ECU customisation function.


Use the ETACS-ECU customise function to check that the "Intelligent/ Comfort washer" is set to "Enable."

Q. Is the check result normal?

Go to Step 2.

Use the ETACS-ECU customise function to set "Intelligent/ Comfort washer" to "Enable." (Refer to .)

STEP 2. M.U.T.-III diagnosis code


Check that ETACS-ECU sets a diagnosis code.

Q. Is the diagnosis code set?

Carry out the troubleshooting on ETACS-ECU. (Refer to GROUP 54A - ETACS, Diagnosis Code Chart .)

Go to Step 3.

STEP 3. Windshield wiper operation check


Check that the windshield wipers work normally.

Q. Is the check result normal?

Go to Step 4.

Refer to trouble symptom chart .

STEP 4. Windshield washer operation check


Check that the windshield washer works normally.

Q. Is the check result normal?

Go to Step 5.

Refer to Inspection Procedure 10 "The windshield washer does not work normally ."

STEP 5. System retest


Check that the comfort washer function 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.