Wiper And Washer System Washer Motor Circuit

Body Electrical. Lexus Gs430, Gs300. Uzs190 Grs190
Wiper And Washer. Lexus Gs430, Gs300. Uzs190 Grs190

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST BY INTELLIGENT TESTER

CHECK ENGINE ROOM NO. 2 JUNCTION BLOCK

INSPECT WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY

CHECK ENGINE ROOM NO. 2 JUNCTION BLOCK

WIPER AND WASHER SYSTEM - Washer Motor Circuit


DESCRIPTION

The front light ECU receives washer switch information from the front wiper switch, and operates the washer relay.

WIRING DIAGRAM


Lexus Gs430, Gs300. Uzs190 Grs190.Wiper And Washer.Wiper And Washer System.Wiper And Washer System Washer Motor Circuit


INSPECTION PROCEDURE

1.PERFORM ACTIVE TEST BY INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG) and turn the intelligent tester's main switch ON.

  1. Select the Active Test, use the intelligent tester to generate a control command, and then check that the washer motor operates.

    Front controller:

    Item
    		Test Details
    		Diagnostic Note
    Washer Motor Operation
    		Washer motor OFF / ON
    		-
OK:
Washer motor operates.


NG
Go to step 2
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

2.CHECK ENGINE ROOM NO. 2 JUNCTION BLOCK


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


    Lexus Gs430, Gs300. Uzs190 Grs190.Wiper And Washer.Wiper And Washer System.Wiper And Washer System Washer Motor Circuit


    Standard voltage:

    Tester Connection
    		Condition
    		Specified Condition
    2E-1 (ALTB) - 2F-4 (W+)
    		Washer switch OFF
    		Below 1 V
    2E-1 (ALTB) - 2F-4 (W+)
    		Engine switch on (IG) and washer switch ON
    		10 to 14 V


NG
Go to step 4
OK


3.INSPECT WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Disconnect the washer motor connector.

  1. Connect the positive (+) battery lead to terminal 1 of the washer motor, and the negative (-) battery lead to terminal 2.

    OK:
    Washer motor operates.


NG
REPLACE WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY
OK

REPAIR OR REPLACE HARNESS AND CONNECTOR (WASHER MOTOR CIRCUIT)

4.CHECK ENGINE ROOM NO. 2 JUNCTION BLOCK


  1. Disconnect the 2E junction block connector.


    Lexus Gs430, Gs300. Uzs190 Grs190.Wiper And Washer.Wiper And Washer System.Wiper And Washer System Washer Motor Circuit

  1. Disconnect the 2F junction block connector.

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

    Standard voltage:

    Tester Connection
    		Condition
    		Specified Condition
    2E-1 (ALTB) - Body ground
    		Always
    		10 to 14 V

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

    Standard resistance:

    Tester Connection
    		Condition
    		Specified Condition
    2F-1 (E) - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

CHECK AND REPLACE ENGINE ROOM NO. 2 JUNCTION BLOCK