WIPER AND WASHER SYSTEM (w/ Rain Sensor) - Washer Motor Circuit

DESCRIPTION

The windshield wiper ECU receives washer switch information from the front wiper switch, and operates the washer motor.

Wiper And Washer System (W/ Rain Sensor) - Washer Motor Circuit. WIPER / WASHER. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

1.INSPECT FRONT WASHER MOTOR

Remove the front washer motor ().

Apply battery voltage to the windshield washer motor and check the operation of the windshield washer motor.

OK:
Measurement Condition Specified Condition
Battery positive (+) → Terminal 1
Battery negative (-) → Terminal 2 Front washer motor operation is normal

NG

REPLACE FRONT WASHER MOTOR ()

OK

2.CHECK HARNESS AND CONNECTOR (FRONT WASHER MOTOR - BODY GROUND)

Disconnect the A16 front washer motor connector.

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

Standard Voltage:
Tester Connection Condition Specified Condition
A16-1 - Body ground Always 11 to 14 V

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH - BODY GROUND)

Disconnect the E16 windshield wiper switch connector.

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

Standard Resistance:
Tester Connection Condition Specified Condition
E16-2 - Body ground Always Below 1 Ω

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4.CHECK HARNESS AND CONNECTOR (FRONT WASHER MOTOR - WINDSHIELD WIPER SWITCH)

Disconnect the E15 windshield wiper switch connector.

Disconnect the A16 washer motor connector.

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

Standard Resistance:
for LH Side
Tester Connection Condition Specified Condition
A16-2 - E15-3 (WF) Always Below 1 Ω
A16-2 - Body ground Always 10 kΩ or higher
for RH Side
Tester Connection Condition Specified Condition
A16-2 - E15-1 (WF) Always Below 1 Ω
A16-2 - Body ground Always 10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

REPLACE WINDSHIELD WIPER SWITCH ()

Measurement Condition	Specified Condition
Battery positive (+) → Terminal 1 Battery negative (-) → Terminal 2	Front washer motor operation is normal