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 navigation receiver 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.
NG -- INSPECT PARKING BRAKE SWITCH
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (PARKING BRAKE SWITCH - NAVIGATION RECEIVER)




(a) Disconnect navigation receiver assembly connector E5 and parking brake switch connector A17.




(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
3. INSPECT PARKING BRAKE SWITCH




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






NG -- REPLACE PARKING BRAKE SWITCH
OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR