Door Courtesy Switch Circuit

LIGHTING (INT): LIGHTING SYSTEM: Door Courtesy Switch Circuit
- Door Courtesy Switch Circuit

DESCRIPTION

The main body ECU RH detects the condition of each door courtesy switch and sends a signal to each ECU via the multiplex communication circuit.

WIRING DIAGRAM





INSPECTION PROCEDURE

HINT
The procedure is the same for each door courtesy switch circuit. First, inspect the suspected door courtesy switch circuit.

PROCEDURE

1. READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

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

(e) Read the display on the Techstream.

Body (Main Body ECU RH)





OK:

Condition sign can be displayed.

Result:





C -- INSPECT FRONT DOOR COURTESY SWITCH RH

B -- INSPECT FRONT DOOR COURTESY SWITCH LH

A -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Interior Lighting System

2. INSPECT FRONT DOOR COURTESY SWITCH LH

Inspect the front door courtesy switch LH Testing and Inspection.

OK:

Door courtesy switch is normal.

NG -- REPLACE FRONT DOOR COURTESY SWITCH LH Components
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY SWITCH LH - MAIN BODY ECU RH)

(a) Disconnect the P1 ECU connector.





(b) Disconnect the Q11 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 -- REPLACE MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH)

4. INSPECT FRONT DOOR COURTESY SWITCH RH

Inspect the front door courtesy switch RH Testing and Inspection.

OK:

Door courtesy switch is normal.

NG -- REPLACE FRONT DOOR COURTESY SWITCH RH Components
OK -- Continue to next step.

5. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY SWITCH RH - MAIN BODY ECU RH)

(a) Disconnect the J75 ECU connector.





(b) Disconnect the P9 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 -- REPLACE MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH)