Front Wiper Motor Circuit

WIPER AND WASHER: WIPER AND WASHER SYSTEM: Front Wiper Motor Circuit

Front Wiper Motor Circuit

DESCRIPTION

The Windshield Wiper ECU controls the front wiper motor.

WIRING DIAGRAM





INSPECTION PROCEDURE
HINT: Start the inspection from step 1 in the case of using the intelligent tester, and start from step 2 in the case of not using the intelligent tester.

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM
(a) Select the Active Test, use the Techstream to generate a control command, and then check the door lock motor function.

Wiper:





HINT: LOW and HIGH can be checked with the active test separately. Therefore, check the HIGH side when HIGH does not operate properly and the LOW side when LOW does not operate properly.

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
NG -- Continue to next step.
2. INSPECT WINDSHIELD WIPER MOTOR ASSEMBLY
NG -- REPLACE WINDSHIELD WIPER MOTOR ASSEMBLY
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR
(a) Check for open and short circuit in the harness and the connector between the front wiper motor and the windshield wiper ECU.
(b) Check for open and short circuit in the harness and the connector between the front wiper motor and body ground.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE