Parking Brake Switch Circuit

LIGHTING (EXT): LIGHTING SYSTEM: Parking Brake Switch Circuit
- Parking Brake Switch Circuit

DESCRIPTION

The main body ECU detects the condition of the parking brake switch.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) According to the display on the Techstream, read the Data List.

Main Body





OK:

Normal conditions listed above are displayed.

NG -- INSPECT PARKING BRAKE SWITCH ASSEMBLY

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Exterior Lighting System

2. INSPECT PARKING BRAKE SWITCH ASSEMBLY

(a) Inspect the parking brake switch assembly Testing and Inspection.

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

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

(a) Disconnect the D52 parking brake switch assembly connector.

(b) Disconnect the 3C instrument panel junction block assembly connector.

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

Standard Resistance:





(d) Reconnect the instrument panel junction block assembly connector.

(e) Reconnect the parking brake switch connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

(a) Remove the instrument panel junction block assembly.





(b) Remove the main body ECU from the instrument panel junction block assembly.

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

Standard Resistance:





Text in Illustration





(d) Reinstall the main body ECU.

(e) Reinstall the instrument panel junction block assembly.

NG -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

OK -- REPLACE MAIN BODY ECU Removal