Wiper And Washer System Headlight Cleaner Motor And Relay Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST USING INTELLIGENT TESTER (HEADLIGHT CLEANER OPERATION)

INSPECT HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY

CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY - BATTERY)

CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - BATTERY AND BODY GROUND)

CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY - HEADLIGHT CLEANER CONTROL RELAY)

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 sends the signal from the headlight cleaner switch assembly, etc. to the headlight cleaner motor and pump assembly to operate the headlight cleaner system.

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Wiper Washer.Wiper And Washer System.Wiper And Washer System Headlight Cleaner Motor And Relay Circuit


INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.PERFORM ACTIVE TEST USING INTELLIGENT TESTER (HEADLIGHT CLEANER OPERATION)

  1. Using the intelligent tester, perform the Active Test (LandCruiser RM000002M5Y027X.html).

    Main Body
    Tester Display
    		Test Part
    		Control Range
    		Diagnostic Note
    Head Light Cleaner
    		Headlight cleaner operation
    		ON/OFF
    		-
    HINT:
    The headlight cleaner system only operates when the front wiper washer switch (windshield wiper switch) is turned on the first time. After that, the headlight cleaner system cannot be operated with the front wiper washer switch (windshield wiper switch) until the ignition switch is turned off and then turned to ON.
    OK:
    Headlight cleaner operates.


NG
Go to step 2
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (LandCruiser RM000001VQ0077X.html)

2.INSPECT HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155

  1. Remove the headlight cleaner motor (LandCruiser RM000002XK5073X.html).

  1. Apply battery voltage to the headlight cleaner motor and check the operation of the headlight cleaner motor.

    OK:
    Measurement Condition
    		Specified Condition
    Battery positive (+) → 2
    Battery negative (-) → 1
    		Headlight cleaner motor operation is normal


NG
REPLACE HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY (LandCruiser RM000002XK5073X.html)
OK


3.CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY - BATTERY)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Wiper Washer.Wiper And Washer System.Wiper And Washer System Headlight Cleaner Motor And Relay Circuit

  1. Disconnect the A37 headlight cleaner motor connector.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    A37-2 - Body ground
    		Always
    		11 to 14 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Headlight Cleaner Motor and Pump Assembly)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - BATTERY AND BODY GROUND)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Wiper Washer.Wiper And Washer System.Wiper And Washer System Headlight Cleaner Motor And Relay Circuit

  1. Disconnect the A38 headlight cleaner control relay connector.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    A38-3 (IG) - Body ground
    		Ignition switch ON
    		11 to 14 V
    A38-3 (IG) - Body ground
    		Ignition switch off
    		Below 1 V

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A38-4 (E) - Body ground
    		Always
    		Below 1 Ω
Text in Illustration
*a
Front view of wire harness connector
(to Headlight Cleaner Control Relay)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY - HEADLIGHT CLEANER CONTROL RELAY)

  1. Disconnect the A38 headlight cleaner control relay connector.

  1. Disconnect the A37 headlight cleaner motor connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A37-1 - A38-6 (PB)
    		Always
    		Below 1 Ω
    A38-6 (PB) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (LandCruiser RM000001VQ0077X.html)