Front Wiper Motor Circuit

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

DESCRIPTION

The cowl side junction block ECU LH controls the wiper motor.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG) and turn the Techstream on.

(c) Select the item below in the Active Test and then check that the front wiper motor operates.

Body No. 3 (Main Body ECU LH):





OK:

Front wiper motor operates.

NG -- INSPECT WINDSHIELD WIPER MOTOR ASSEMBLY

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

2. INSPECT WINDSHIELD WIPER MOTOR ASSEMBLY

(a) Remove the windshield wiper motor Removal.





(b) Check the LO operation.

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

(c) Check the HI operation.

(1) Connect the positive (+) battery lead to terminal 3 (+2) of the connector, and the negative (-) battery lead to terminal 1 (+S), and check that the motor operates at high speed.

NG -- REPLACE WINDSHIELD WIPER MOTOR ASSEMBLY
OK -- Continue to next step.

3. CHECK WIRE HARNESS (WINDSHIELD WIPER MOTOR ASSEMBLY - COWL SIDE JUNCTION BLOCK LH)

(a) Disconnect the A19 front windshield wiper motor connector.





(b) Disconnect the A30 cowl side junction block LH ECU connector.

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

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR

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