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

INSPECTION PROCEDURE
1.CHECK VEHICLE SIGNAL (OPERATION CHECK) |
Display the "Vehicle Signal Check Mode" screen (LandCruiser RM000003SKF0LFX.html).
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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.
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OK | ||
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2.CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - PARKING BRAKE SWITCH ASSEMBLY) |
Disconnect the H51 radio and display receiver assembly connector.
Disconnect the G77 parking brake switch assembly connector.
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
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OK | |
3.INSPECT PARKING BRAKE SWITCH ASSEMBLY |
Remove the parking brake switch assembly (LandCruiser RM000003D75013X.html).
Inspect the parking brake switch assembly (LandCruiser RM000003D7300ZX.html).
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OK | ||
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