Front Wiper Motor Circuit

WIPER / WASHER: WIPER AND WASHER SYSTEM (w/ Rain Sensor): Front Wiper Motor Circuit
- Front Wiper Motor Circuit

DESCRIPTION

The windshield wiper 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 (windshield wiper ECU) related front wiper switch is on, Active Test items related to the front wiper switch are prohibited (double operation prohibition). Check that the front wiper switches are off before performing Active Test.

Body No. 5





OK:

Front wiper motor operates.

NG -- INSPECT FRONT WIPER MOTOR

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Wiper and Washer System (w/ Rain Sensor)

2. INSPECT FRONT WIPER MOTOR

(a) Remove the front wiper motor Wiper and Washer System (w/ Rain Sensor).





(b) Apply battery voltage to the front wiper motor and check the speed of the front wiper motor.

OK:





Text in Illustration





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

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

(a) Disconnect the A22 motor connector.





(b) Disconnect the E83 ECU connector.

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

Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE WINDSHIELD WIPER ECU Removal