WIPER AND WASHER SYSTEM - Headlight Cleaner Motor and Relay Circuit

DESCRIPTION

This circuit provides power to the headlight cleaner control relay.

The headlight cleaner control relay receives a signal from each switch and sends the signal to the headlight cleaner motor and pump assembly to operate it.

WIRING DIAGRAM

Wiper And Washer System - Headlight Cleaner Motor And Relay Circuit. WIPER AND WASHER. Lexus IS250 IS220d GSE20 ALE20

INSPECTION PROCEDURE

1.INSPECT HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY

Wiper And Washer System - Headlight Cleaner Motor And Relay Circuit. WIPER AND WASHER. Lexus IS250 IS220d GSE20 ALE20

Disconnect the connector from the headlight cleaner motor and pump assembly.

Connect the positive (+) battery lead to terminal 1 of the headlight cleaner motor and pump assembly, and the negative (-) battery lead to terminal 2.

OK:
Operation sounds are heard.

REPLACE HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY

OK

2.CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER MOTOR CIRCUIT)

Connect the headlight cleaner motor and pump assembly connector.

Disconnect the A3 headlight cleaner control relay connector.

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

Standard voltage:
Tester Connection Condition Specified Condition
A3-3 (IG) - A3-4 (E) Engine switch off Below 1 V
Engine switch on (IG) 10 to 14 V
A3-6 (PB) - A3-4 (E) Always 10 to 14 V

REPAIR OR REPLACE HARNESS OR CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - BATTERY)

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

Tester Connection	Condition	Specified Condition
A3-3 (IG) - A3-4 (E)	Engine switch off	Below 1 V
A3-3 (IG) - A3-4 (E)	Engine switch on (IG)	10 to 14 V
A3-6 (PB) - A3-4 (E)	Always	10 to 14 V