Navigation System - Parking Brake Switch Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK VEHICLE SIGNAL (OPERATION CHECK)
CHECK HARNESS AND CONNECTOR (PARKING BRAKE SWITCH ASSEMBLY - MULTI-MEDIA MODULE RECEIVER ASSEMBLY)
INSPECT PARKING BRAKE SWITCH ASSEMBLY
NAVIGATION SYSTEM - Parking Brake Switch Circuit
DESCRIPTION
This circuit is from the parking brake switch assembly to the multi-media module receiver assembly.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.CHECK VEHICLE SIGNAL (OPERATION CHECK) |
Enter the "Function Check/Setting I" mode and select "Vehicle Signal" ().
Check that the display changes between ON and OFF according to the parking brake operation.
- OK:
| Parking Brake Position | Display |
| Applied | ON |
| Released | OFF |
- This display is updated once per second. As a result, it is normal for the display to lag behind the actual change in the switch.
| OK | |
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| PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE ()
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| 2.CHECK HARNESS AND CONNECTOR (PARKING BRAKE SWITCH ASSEMBLY - MULTI-MEDIA MODULE RECEIVER ASSEMBLY) |
Disconnect the E53 parking brake switch assembly connector.
Disconnect the F77 multi-media module receiver assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| F77-55 (PKB) - E53-1 | Always | Below 1 Ω |
| F77-55 (PKB) - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 3.INSPECT PARKING BRAKE SWITCH ASSEMBLY |
Remove the parking brake switch assembly connector ().
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Switch Condition | Specified Condition |
| 1 - Switch body | ON (Shaft not pressed) | Below 1 Ω |
| OFF (Shaft pressed) | 10 kΩ or higher |
Text in Illustration | ON |
 | OFF |
| | REPLACE PARKING BRAKE SWITCH ASSEMBLY ()
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| OK | |
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| REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY ()
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