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 the navigation receiver assembly connector.





(b) Disconnect the parking brake switch connector.





(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures

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:





Result:





C -- REPLACE PARKING BRAKE SWITCH (for TMMK Made) Disassembly

B -- REPLACE PARKING BRAKE SWITCH (for TMC Made) Disassembly

A -- REPAIR OR REPLACE HARNESS OR CONNECTOR