Navigation System (For Navigation Receiver Type) Reverse Signal Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK VEHICLE SIGNAL (OPERATION CHECK)

CHECK NAVIGATION RECEIVER ASSEMBLY

CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)

CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - BATTERY)

CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - BACK-UP LIGHT SWITCH ASSEMBLY)

CHECK HARNESS AND CONNECTOR (BACK-UP LIGHT SWITCH ASSEMBLY - BATTERY)

NAVIGATION SYSTEM (for Navigation Receiver Type) - Reverse Signal Circuit


DESCRIPTION

The navigation receiver assembly receives a reverse signal from the park/neutral position switch assembly*1 or back-up light switch*2 assembly.
  1. *1: for Automatic Transmission
  2. *2: for Manual Transmission

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 Navigation Receiver Type) Reverse Signal Circuit


INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
HINT:
When replacing the navigation receiver assembly, it is necessary to perform the vehicle contract setting for Connected Services (w/ Connected Services Function).
1.CHECK VEHICLE SIGNAL (OPERATION CHECK)


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

  1. Enter the "Vehicle Signal Check Mode" screen. [Refer to check Vehicle Signal in Operation Check (LandCruiser RM000003SKF0LEX.html).]

  1. Check that the display changes between ON and OFF according to the shift lever position.

    OK:
    Shift Lever Position
    		Display
    R
    		ON
    Except R
    		OFF
    HINT:
    This display is updated once per second. As a result, it is normal for the display to lag behind the actual shift lever position.


NG
Go to step 2
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (LandCruiser RM000005MAG00EX.html)

2.CHECK NAVIGATION RECEIVER ASSEMBLY


    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 Navigation Receiver Type) Reverse Signal Circuit

  1. Disconnect the navigation receiver assembly connector.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    H56-2 (REV) - Body ground
    		Engine switch on (IG), shift lever in R
    		7.5 to 14 V
    H56-2 (REV) - Body ground
    		Engine switch on (IG), shift lever not in R
    		Below 1 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Navigation Receiver Assembly)
    Result
    Result
    		Proceed to
    OK
    		A
    NG (for Automatic Transmission)
    		B
    NG (for Manual Transmission)
    		C


B
Go to step 3

C
Go to step 5
A

REPLACE NAVIGATION RECEIVER ASSEMBLY (LandCruiser RM000003B6H02GX.html)

3.CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)

  1. Disconnect the H56 navigation receiver assembly connector.

  1. Disconnect the C159 park/neutral position switch assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H56-2 (REV) - C159-1 (RL)
    		Always
    		Below 1 Ω
    H56-2 (REV) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - BATTERY)


    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 Navigation Receiver Type) Reverse Signal Circuit

  1. Disconnect the park/neutral position switch assembly connector.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    C159-2 (RB) - Body ground
    		Engine switch on (IG)
    		11 to 14 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Park/neutral Position Switch Assembly)
    Result
    Result
    		Proceed to
    OK (for A750F Automatic Transmission)
    		A
    OK (for AC60F Automatic Transmission)
    		B
    NG
    		C


B
REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY (LandCruiser RM000000O5O01MX.html)

C
REPAIR OR REPLACE HARNESS OR CONNECTOR
A

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY (LandCruiser RM0000010NC089X.html)

5.CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - BACK-UP LIGHT SWITCH ASSEMBLY)

  1. Disconnect the H56 navigation receiver assembly connector.

  1. Disconnect the C41*1 or C160*2 back-up light switch assembly connector.

    1. *1: for 1GR-FE
    2. *2: for 1KD-FTV and 1GD-FTV

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

    Standard Resistance:
    for 1GR-FE
    Tester Connection
    		Condition
    		Specified Condition
    H56-2 (REV) - C41-1
    		Always
    		Below 1 Ω
    H56-2 (REV) - Body ground
    		Always
    		10 kΩ or higher
    for 1KD-FTV and 1GD-FTV
    Tester Connection
    		Condition
    		Specified Condition
    H56-2 (REV) - C160-2
    		Always
    		Below 1 Ω
    H56-2 (REV) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


6.CHECK HARNESS AND CONNECTOR (BACK-UP LIGHT SWITCH ASSEMBLY - BATTERY)


    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 Navigation Receiver Type) Reverse Signal Circuit

  1. Disconnect the back-up light switch assembly connector.

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

    Standard Voltage:
    for 1GR-FE
    Tester Connection
    		Switch Condition
    		Specified Condition
    C41-2 - Body ground
    		Engine switch on (IG)
    		11 to 14 V
    for 1KD-FTV and 1GD-FTV
    Tester Connection
    		Switch Condition
    		Specified Condition
    C160-1 - Body ground
    		Engine switch on (IG)
    		11 to 14 V
    Text in Illustration
    *A
    		for 1GR-FE
    *B
    		for 1KD-FTV and 1GD-FTV
    *a
    		Front view of wire harness connector
    (to Back-up Light Switch Assembly)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE BACK-UP LIGHT SWITCH ASSEMBLY (LandCruiser RM0000047AR005X.html)