CAUTIONCOMMENTS 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 3. Measure the voltage at the B-07 windshield wiper motor connector.
- Disconnect the connector, and measure at the wiring harness side.
- Ignition switch: ACC
- Check the voltage between the B-07 windshield wiper motor connector terminal No.2 and body earth.
OK: Battery positive voltage
Q: Is the check result normal?
YES:
Go to Step 5
.NO: Go to Step 4
.Step 4. Check the wiring harness between B-07 windshield wiper motor connector terminal No.2 and ignition switch (ACC).
NOTE: Prior to the wiring harness inspection, check the junction connectors C-202, C-203 and the intermediate connector C-106 <RH drive vehicles>
or C-104 <LH drive vehicles>
and repair if necessary.
- Check the power supply line to ignition switch (ACC) for open circuit.
Q: Is the check result normal?
YES:
The trouble can be an intermittent malfunction (Refer to GROUP 00 -
How to Cope with Intermittent Malfunction 
).NO: Repair the wiring harness.
Step 6. Check the wiring harness between B-07 windshield wiper motor connector terminal No.1 <RH drive vehicles>
or No.3 <LH drive vehicles>
and A-12X front-ECU connector terminal No.29.
NOTE: Prior to the wiring harness inspection, check the intermediate connector A-14 and repair if necessary.
- Check the input signal lines.
Q: Is the check result normal?
YES:
Go to Step 7.NO: Repair the wiring harness.