INSPECTION PROCEDURE
3: The windshield wipers do not stop at the specified park position.
caution
Whenever ECU is replaced, ensure that the input
and output signal circuits are normal.
COMMENTS ON TROUBLE SYMPTOM
The windshield wiper motor or the ETACS-ECU may be defective.
PROBABLE CAUSES
Defective windshield wiper motor
Malfunction of ETACS-ECU
Malfunctions of the wiring harness and connectors
DIAGNOSTIC PROCEDURE
STEP 1. Check the A-09 windshield wiper motor connector
Q.
Is the check result normal?
Go to Step 2.
Repair the connector concerned.
STEP 2. Check the windshield wiper motor.
Check that the windshield wiper motor works normally. Refer to .
Q.
Is the check result normal?
Go to Step 3.
Replace the windshield wiper motor.
STEP 3. Measure the voltage at the A-09 windshield wiper motor connector.
(1)Disconnect the connector, and measure the voltage at the wiring harness side.
(2)Turn the ignition switch to the ACC position.
(3)Measure the voltage between A-09 windshield wiper motor connector terminal No.
2 and body earth. OK: Battery voltage
Q.
Is the check result normal?
Go to Step 5.
Go to Step 4.
STEP 4. Check the wiring harness wires between A-09 windshield wiper
motor connector terminal No. 2 and fusible link (33).
Check the power supply line for open or short circuit.
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 ).
Repair the wiring harness.
STEP 5. Check the C-304 ETACS-ECU connector
Q.
Is the check result normal?
Go to Step 6.
Repair the connector concerned.
STEP 6. Check the wiring harness wires between C-304 ETACS-ECU connector
terminal Nos. 8, 12 and A-09 windshield wiper motor connector terminal Nos. 3 <LHD> or 1 <RHD>
and 2.
Check the output lines for open or short circuit.
Q.
Is the check result normal?
Go to Step 7.
Repair the wiring harness.
STEP 7. Retest the system.
Check that the windshield wipers stop at the specified park position.
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 ).
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Repair the connector concerned.
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