Wiper And Washer System Washer Fluid Level Warning Switch Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER (WASHER SWITCH)

INSPECT LEVEL WARNING SWITCH ASSEMBLY

INSPECT WASHER WIRING ASSEMBLY

CHECK HARNESS AND CONNECTOR (WASHER WIRING ASSEMBLY - COMBINATION METER ASSEMBLY AND BODY GROUND)

WIPER AND WASHER SYSTEM - Washer Fluid Level Warning Switch Circuit


DESCRIPTION

When the volume of washer fluid decreases to below a certain level (when the level warning switch assembly is turned on), the multi-information display warns the driver by displaying a message*1 or the combination meter assembly warns the driver by displaying a washer fluid warning light*2.
  1. *1: w/ Multi-information Display
  2. *2: w/o Multi-information Display

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 Washer Fluid Level Warning Switch Circuit


INSPECTION PROCEDURE

1.READ VALUE USING INTELLIGENT TESTER (WASHER SWITCH)

  1. Use the Data List to check if the level warning switch assembly is functioning properly (LandCruiser RM000002M5Y027X.html).

    Combination Meter
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Washer Switch
    		Level warning switch / ON or OFF
    		ON: Fluid volume is less than 550 to 750 cc (33.5 to 45.7 cu.in.)
    OFF: Fluid volume is more than 550 to 750 cc (33.5 to 45.7 cu.in.)
    		-
    OK:
    On intelligent tester screen, item changes between ON and OFF according to above chart.


NG
Go to step 2
OK

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

2.INSPECT LEVEL WARNING SWITCH ASSEMBLY

  1. Remove the level warning switch assembly (LandCruiser RM000002XK5074X.html).

  1. Inspect the level warning switch assembly (LandCruiser RM000001P2X07KX.html)



NG
REPLACE LEVEL WARNING SWITCH ASSEMBLY (LandCruiser RM000002XK5074X.html)
OK


3.INSPECT WASHER WIRING ASSEMBLY


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Wiper Washer.Wiper And Washer System.Wiper And Washer System Washer Fluid Level Warning Switch Circuit

  1. Disconnect the A23 and B washer wiring assembly connectors.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A23-3 (S) - B-1
    		Always
    		Below 1 Ω
    A23-6 (E) - B-2
    		Always
    		Below 1 Ω
    A23-3 (S) or B-1 - Body ground
    		Always
    		10 kΩ or higher
    A23-6 (E) or B-2 - Body ground
    		Always
    		10 kΩ or higher


NG
REPLACE WASHER WIRING ASSEMBLY
OK


4.CHECK HARNESS AND CONNECTOR (WASHER WIRING ASSEMBLY - COMBINATION METER ASSEMBLY AND BODY GROUND)

  1. Disconnect the A23 washer wiring assembly connector.

  1. Disconnect the G7 combination meter assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A23-3 (S) - G7-20 (WLVL)
    		Always
    		Below 1 Ω
    A23-6 (E) - Body ground
    		Always
    		Below 1 Ω
    A23-3 (S) or G7-20 (WLVL) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE COMBINATION METER ASSEMBLY (LandCruiser RM000003QKY01CX.html)