Inspection Procedure 12: Delayed finishing wipe 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.
COMMENT ON TROUBLE SYMPTOM
If the delayed finishing wipe function does not properly operate, the input circuit of windshield wiper switch, the input circuit of windshield washer switch, or ETACS-ECU may be defective.
PROBABLE CAUSES
Malfunction of column switch
Malfunction of ETACS-ECU
Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
STEP 1. Check the ETACS-ECU customisation function.
Use the ETACS-ECU customise function to check that the "front wiper washer" is set to "On with Delayed finishing wipe function."
Q.
Is the check result normal?
Go to Step 2.
Use the ETACS-ECU customise function to set the "front wiper washer" to "On with Delayed finishing wipe function." (Refer to .)
STEP 2. M.U.T.-III diagnosis code
Check if the 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 washers work normally.
Q.
Is the check result normal?
Go to Step 5.
Refer to Inspection Procedure 10 "Windshield washers do not work normally ."
STEP 5. Retest the system
Check that the delayed finishing wipe 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 .)