Door Courtesy Switch Circuit

LIGHTING: LIGHTING SYSTEM: Door Courtesy Switch Circuit

Door Courtesy Switch Circuit

DESCRIPTION

The main body ECU detects the condition of the door courtesy switch.

WIRING DIAGRAM





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

PROCEDURE

1. READ VALUE USING TECHSTREAM (DOOR COURTESY LIGHT SWITCH)
(a) Check the DATA LIST for proper functioning of the transistor relay.

Main body ECU





OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
NG -- Continue to next step.

2. CHECK DRIVER SIDE JUNCTION BLOCK (BODY ECU)




(a) Disconnect the 1D junction block connector.
(b) Measure the resistance of the wire harness side connector.
Standard resistance:






OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
NG -- Continue to next step.

3. INSPECT DOOR COURTESY LIGHT SWITCH




(a) Remove the courtesy light switch.
(b) Measure the resistance of the switch.
Standard resistance:






NG -- REPLACE DOOR COURTESY LIGHT SWITCH
OK -- REPAIR OR REPLACE HARNESS AND CONNECTOR (EACH COURTESY SWITCH CIRCUIT)