Navigation System (For Radio And Display Type) Reverse Signal Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK VEHICLE SIGNAL (OPERATION CHECK)

CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY

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

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

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

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

DESCRIPTION

1. *1: for Automatic Transmission
   
2. *2: for Manual Transmission
   

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

1. Enter the "Vehicle Signal Check Mode" screen. [Refer to check Vehicle Signal in Operation Check (LandCruiser RM000003SKF0LFX.html)].
   

2. 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.

1. Disconnect the radio and display receiver assembly connector.
   

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

   Standard Voltage:

   Tester Connection	Switch Condition	Specified Condition
   H51-2 (REV) - Body ground	Engine switch on (IG), shift lever in R	7.5 to 14 V
   H51-2 (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 Radio and Display Receiver Assembly)

   Result

   Result	Proceed to
   OK	A
   NG (for Automatic Transmission)	B
   NG (for Manual Transmission)	C

1. Disconnect the H51 radio and display receiver assembly connector.
   

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

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   H51-2 (REV) - C159-1 (RL)	Always	Below 1 Ω
   H51-2 (REV) - Body ground	Always	10 kΩ or higher

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

2. 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

1. Disconnect the H51 radio and display receiver assembly connector.
   

2. 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
      

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

   Standard Resistance:

   for 1GR-FE

   Tester Connection	Condition	Specified Condition
   H51-2 (REV) - C41-1	Always	Below 1 Ω
   H51-2 (REV) - Body ground	Always	10 kΩ or higher

   for 1KD-FTV and 1GD-FTV

   Tester Connection	Condition	Specified Condition
   H51-2 (REV) - C160-2	Always	Below 1 Ω
   H51-2 (REV) - Body ground	Always	10 kΩ or higher

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

2. 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)