Home

Toyota Workshop

GSIC - Global Service Information Center

WIPER AND WASHER SYSTEM > Washer Signal Circuit

for Preparation Click here


DESCRIPTION

The headlight cleaner control relay receives the windshield washer operation signal.

WIRING DIAGRAM


E182121E02


INSPECTION PROCEDURE

1.CHECK OPERATION

  1. Check the operation of the front wiper and washer system.

    OK:
    Front wiper and washer system operates normally.



NG
GO TO PROBLEM SYMPTOMS TABLE (Click here)
OK


2.CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH ASSEMBLY - RELAY)


    E144468E20

  1. Disconnect the A44 headlight cleaner control relay connector.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    A44-5 (FRWA) - Body ground
    		Front washer switch off
    		11 to 14 V
    Front washer switch on
    		Below 1 V

    Text in Illustration 
    *1
    		Front view of wire harness connector
    (to Headlight Cleaner Control Relay)



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)