Parking Brake Switch Circuit

NAVIGATION: NAVIGATION SYSTEM (for HDD): Parking Brake Switch Circuit

Parking Brake Switch Circuit

DESCRIPTION

This circuit is from the parking brake switch to the display 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.
NG -- GO TO LIGHTING SYSTEM
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION ASSEMBLY - MAIN BODY ECU)




(a) Disconnect the L59 display connector.
(b) Disconnect the L12 ECU connector.
(c) 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