Front Wiper Motor LO Circuit Check

Front Wiper Motor LO Circuit Check

Component Function Check

1. CHECK FRONT WIPER LO OPERATION

IPDM E/R AUTO ACTIVE TEST
1 Start IPDM E/R auto active test. Refer to [Diagnosis System (IPDM E/R): Diagnosis Description] Diagnosis System (IPDM E/R) Diagnosis Description.
2 Check that the front wiper operates at the LO operation.
WITH SDT ACTIVE TEST
1 Select "FRONT WIPER" of IPDM E/R active test item.
2 While operating the test item, check front wiper operation.






Is front wiper (LO) operation normal?
YES
Front wiper motor LO circuit is normal.
NO
Refer to "Diagnosis Procedure".

Diagnosis Procedure

Regarding Wiring Diagram information, refer to [Front Wiper and Washer System: Wiring Diagram] Front Wiper and Washer System.

1. CHECK FRONT WIPER MOTOR FUSE

1 Turn the ignition switch OFF.
2 Check that the following fuse is not blown.






Is the fuse blown?
YES
Replace the fuse after repairing the affected circuit.
NO
GO TO 2

2. CHECK FRONT WIPER MOTOR (LO) OUTPUT VOLTAGE

WITH SDT ACTIVE TEST
1 Turn the ignition switch ON.





2 Select "FRONT WIPER" of IPDM E/R active test item.
3 While operating the test item, check voltage between IPDM E/R harness connector and ground.






Is the measurement value normal?
YES
GO TO 3
NO
Replace IPDM E/R. Refer to [IPDM E/R: Removal and Installation of IPDM E/R] Service and Repair.

3. CHECK FRONT WIPER MOTOR (LO) OPEN CIRCUIT

1 Turn the ignition switch OFF.
2 Disconnect IPDM E/R and front wiper motor.
3 Check continuity between IPDM E/R harness connector and front wiper motor harness connector.






Does continuity exist?
YES
Replace front wiper motor. Refer to [Wiper Motor and Linkage: Removal and Installation] Service and Repair.
NO
Repair or replace harness.