Parking Brake Switch Circuit

LIGHTING: LIGHTING SYSTEM: Parking Brake Switch Circuit
- Parking Brake Switch Circuit

DESCRIPTION

The main body ECU receives a parking brake switch signal to control the daytime running light system.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM

(a) Connect Techstream to the DLC3.

(b) Turn the ignition switch on (IG).

(c) Turn Techstream on.

(d) Select the following menu items: Body Electrical / Main Body / Data List.

(e) Read the display on Techstream.

Main Body:





OK:

Normal conditions listed above are displayed.

NG -- INSPECT PARKING BRAKE SWITCH ASSEMBLY

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures

2. INSPECT PARKING BRAKE SWITCH ASSEMBLY

(a) Remove the parking brake switch assembly.





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

Standard resistance:





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

3. CHECK HARNESS AND CONNECTOR (SWITCH - INSTRUMENT PANEL JUNCTION BLOCK)

(a) Disconnect the 1C instrument panel junction block assembly connector.





(b) Disconnect the A17 switch connector.

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

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)