Inspection Procedure 3: The windshield wipers do not stop at the specified park position<Not using SWS monitor>
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 front-ECU may be defective.

POSSIBLE CAUSES

  • Malfunction of the windshield wiper motor
  • Malfunction of the front-ECU
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Connector check: B-09 windshield wiper motor connector.

Q. Is the check result normal?
Go to Step 2.
Repair the connector.

Step 2. Check the windshield wiper motor assembly.
Refer to .

Q. Is the check result normal?
Go to Step 3
Replace the windshield wiper motor assembly.

Step 3. Voltage measurement at the B-09 windshield wiper motor connector.
(1)Disconnect the connector, and measure at the wiring harness side.
(2)Ignition switch: ACC
(3)Check the voltage between the B-09 windshield wiper motor connector terminal No.2 and body earth.
OK: System voltage

Q. Is the check result normal?
Go to Step 5.
Go to Step 4.

Step 4. Check the wiring harness between B-09 windshield wiper motor connector terminal No.2 and ignition switch (ACC).
note Prior to the wiring harness inspection, check the intermediate connectors A-05 and D-238, and repair if necessary.

  • Check the power supply line to ignition switch (ACC) for open circuit.

Q. Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
Repair the wiring harness.

Step 5. Connector check: A-09X front-ECU connector.

Q. Is the check result normal?
Go to Step 6.
Repair the connector.

Step 6. Check the wiring harness between B-09 windshield wiper motor connector terminal No.3 and A-09X front-ECU connector terminal No.23.
note Prior to the wiring harness inspection, check the intermediate connector A-05 and repair if necessary.

  • Check the input signal lines.

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?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
Replace the front-ECU.