Navigation System (For Radio And Display Type) Parking Brake Switch Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK VEHICLE SIGNAL (OPERATION CHECK)

CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - PARKING BRAKE SWITCH ASSEMBLY)

INSPECT PARKING BRAKE SWITCH ASSEMBLY

NAVIGATION SYSTEM (for Radio and Display Type) - Parking Brake Switch Circuit


DESCRIPTION

This circuit includes the parking brake switch assembly and radio and display receiver assembly.

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Navigation Multi Info Display.Navigation System (For Radio And Display Type).Navigation System (For Radio And Display Type)  Parking Brake Switch Circuit


INSPECTION PROCEDURE

1.CHECK VEHICLE SIGNAL (OPERATION CHECK)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155
  1. Display the "Vehicle Signal Check Mode" screen (LandCruiser RM000003SKF0LFX.html).

  1. Check that the display changes between ON and OFF according to the parking brake operation.

    OK:
    Parking Brake Condition
    Display
    Applied
    ON
    Released
    OFF
    HINT:
    This display is updated once per second. As a result, it is normal for the display to lag behind the actual parking brake operation.


NG
Go to step 2
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (LandCruiser RM000005MAG00FX.html)

2.CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - PARKING BRAKE SWITCH ASSEMBLY)
  1. Disconnect the H51 radio and display receiver assembly connector.

  1. Disconnect the G77 parking brake switch assembly connector.

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

    Standard Resistance:
    Tester Connection
    Condition
    Specified Condition
    H51-15 (PKB) - G77-1
    Always
    Below 1 Ω
    H51-15 (PKB) - Body ground
    Always
    10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.INSPECT PARKING BRAKE SWITCH ASSEMBLY
  1. Remove the parking brake switch assembly (LandCruiser RM000003D75013X.html).

  1. Inspect the parking brake switch assembly (LandCruiser RM000003D7300ZX.html).



NG
REPLACE PARKING BRAKE SWITCH ASSEMBLY (LandCruiser RM000003D75013X.html)
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (LandCruiser RM000005MAG00FX.html)