Parking Brake Switch Circuit

NAVIGATION: NAVIGATION SYSTEM: Parking Brake Switch Circuit

Parking Brake Switch Circuit

DESCRIPTION

This circuit is from the parking brake switch to the radio and navigation assembly.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK BRAKE WARNING LIGHT
(a) Check that the brake warning light comes on when the parking brake is applied and goes off when it is released.
OK:
The brake warning light operates as specified above.
OK -- CHECK HARNESS AND CONNECTOR (PARKING BRAKE SWITCH - RADIO AND NAVIGATION ASSEMBLY)

NG -- Continue to next step.

2. INSPECT PARKING BRAKE SWITCH




(a) Disconnect the parking brake switch.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:





NG -- REPLACE PARKING BRAKE SWITCH
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (PARKING BRAKE SWITCH - RADIO AND NAVIGATION ASSEMBLY)




(a) Disconnect the radio and navigation assembly connector R9 and parking brake switch connector P4.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE