Parking Brake Switch Circuit

NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM (for HDD): Parking Brake Switch Circuit
- Parking Brake Switch Circuit

DESCRIPTION

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

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.

(b) Proceed to the next step based on the inspection result.

Result:

D -- INSPECT PARKING BRAKE SWITCH ASSEMBLY

C -- CHECK HARNESS AND CONNECTOR

B -- INSPECT PARKING BRAKE SWITCH ASSEMBLY
A -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR

(a) Disconnect the J50 display and navigation module display connector.

(b) Disconnect the A25 parking brake switch assembly connector.

Text in Illustration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table

3. INSPECT PARKING BRAKE SWITCH ASSEMBLY

(a) Disconnect the parking brake switch assembly connector.

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

Standard Resistance:

NG -- REPLACE PARKING BRAKE SWITCH ASSEMBLY Removal

OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR

4. CHECK HARNESS AND CONNECTOR

(a) Disconnect the J50 display and navigation module display connector.

(b) Disconnect the J88 parking brake switch assembly connector.

Text in Illustration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table

5. INSPECT PARKING BRAKE SWITCH ASSEMBLY

(a) Disconnect the parking brake switch assembly connector.

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

Standard Resistance:

NG -- REPLACE PARKING BRAKE SWITCH ASSEMBLY Removal

OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR