Front Wiper Motor Circuit

WIPER / WASHER: WIPER AND WASHER SYSTEM: 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) Using the Techstream, perform the Active Test.
NOTE:
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 CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. INSPECT FRONT WIPER MOTOR




(a) Remove the front wiper motor Removal.
(b) Apply battery voltage to the front wiper motor connector and check the speed of the front wiper motor.
OK:






NG -- REPLACE FRONT WIPER MOTOR
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 E89 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 -- REPLACE WINDSHIELD WIPER ECU