Front Wiper Motor Circuit

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

DESCRIPTION

The front light ECU controls the wiper motor.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM (FRONT WIPER MOTOR)

(a) Select the Active Test, use the Techstream to generate a control command, and then check the front wiper motor.

NOTICE:
When a Body No.5 (front light ECU) related vehicle switch is ON, Active Test items related to the vehicle switch are prohibited (double operation prohibition). Check that the vehicle switches are OFF before performing Active Test.

Front Light ECU:





OK:

Front wiper motor operates.

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
NG -- Continue to next step.

2. INSPECT FRONT WIPER MOTOR

(a) Remove the front wiper motor.





(b) Check the LO operation.

(1) Connect the positive (+) battery lead to terminal 1 (+1) of the connector and the negative (-) battery lead to terminal 5 (E), and check that the motor operates at low speed.

OK:

Motor operates at low speed

(c) Check the HI operation.

(1) Connect the positive (+) battery lead to terminal 4 (+2) of the connector and the negative (-) battery lead to terminal 5 (E), and check that the motor operates at high speed.

OK:

Motor operates at high speed

NG -- REPLACE FRONT WIPER MOTOR Removal
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (FRONT WIPER MOTOR - FRONT LIGHT ECU AND BODY GROUND)

(a) Disconnect the A32 motor connector.





(b) Disconnect the A51 ECU connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE