Navigation System (For Radio And Display Type) Steering Pad Switch Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT STEERING PAD SWITCH ASSEMBLY
INSPECT SPIRAL CABLE SUB-ASSEMBLY
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - SPIRAL CABLE SUB-ASSEMBLY)
NAVIGATION SYSTEM (for Radio and Display Type) - Steering Pad Switch Circuit |
DESCRIPTION
This circuit sends an operation signal from the steering pad switch assembly to the radio and display receiver assembly.If there is an open in the circuit, the audio system cannot be operated using the steering pad switch assembly.If there is a short in the circuit, the same condition as when a switch is continuously depressed occurs.Therefore, the radio and display receiver assembly cannot be operated using the steering pad switch assembly, and also the radio and display receiver assembly itself cannot function.
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- The vehicle is equipped with a Supplemental Restraint System (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precaution for Supplemental Restraint System (LandCruiser RM000000KT10NVX.html).
| 1.INSPECT STEERING PAD SWITCH ASSEMBLY |
Remove the steering pad switch assembly (LandCruiser RM0000039SA01YX.html).
Inspect the steering pad switch assembly (LandCruiser RM000003C4V01IX.html).
| 2.INSPECT SPIRAL CABLE SUB-ASSEMBLY |
Remove the spiral cable sub-assembly (LandCruiser RM000002O8X02DX.html).
Inspect the spiral cable sub-assembly (LandCruiser RM000002O8V03FX.html).
| 3.CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - SPIRAL CABLE SUB-ASSEMBLY) |
Disconnect the H51 radio and display receiver assembly connector.
Disconnect the G40 spiral cable sub-assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance::
Tester Connection
| Condition
| Specified Condition
|
H51-21 (SW1) - G40-6 (AU1)
| Always
| Below 1 Ω
|
H51-22 (SW2) - G40-5 (AU2)
| Always
| Below 1 Ω
|
H51-23 (SWG) - G40-4 (EAU)
| Always
| Below 1 Ω
|
H51-21 (SW1) - Body ground
| Always
| 10 kΩ or higher
|
H51-22 (SW2) - Body ground
| Always
| 10 kΩ or higher
|
H51-23 (SWG) - Body ground
| Always
| 10 kΩ or higher
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
