Inspection Procedure
3: The windshield wipers do not stop at the specified position.
caution |
Whenever the 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
- Malfunction of the windshield wiper motor
- The ETACS-ECU may be defective
- Damaged harness wires and connectors
|
STEP 1. Check the windshield wiper motor.
|
|
Check that the windshield wiper motor works normally. Refer to .
|
|
Q.
Is the check result normal?
|
|
Go to Step 2.
|
|
|
|
Replace the windshield wiper motor.
|
|
|
|
STEP 2. Measure the voltage at windshield wiper motor connector.
|
|
(1)Disconnect the connector, and measure the voltage at the wiring harness side.
|
|
(2)Set the ignition switch to the ACC position.
|
|
(3)Measure the voltage between the windshield wiper motor connector (ACC terminal)
and the body earth. OK: System voltage
|
|
Q.
Is the check result normal?
|
|
Go to Step 4.
|
|
|
|
Go to Step 3.
|
|
|
|
STEP 3. Check of open, short circuit in power supply line between
windshield wiper motor connector and ignition switch (ACC).
|
|
Q.
Is the check result normal?
|
|
The trouble can be an intermittent malfunction (Refer to GROUP 00, How to use
Troubleshooting/inspection Service Points - How to Cope with Intermittent
Malfunction ).
|
|
|
|
Repair the connector(s) or wiring harness
|
|
|
|
STEP 4. Check of open, short circuit in F/WIP AS, F/WIP ACC line between
windshield wiper motor connector and ETACS-ECU connector
|
|
Q.
Is the check result normal?
|
|
Go to Step 5.
|
|
|
|
Repair the connector(s) or wiring harness
|
|
|
|
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 Malfunctions .)
|
|
|
|
Replace the ETACS-ECU.
|
|
|