Door Courtesy Lamp and Courtesy Switch Circuit

DOOR COURTESY LAMP AND COURTESY SWITCH CIRCUIT

CIRCUIT DESCRIPTION

The door courtesy lamp illuminates when the door is opened and turns off when closed.
The driver door ECU and passenger door ECU detect the condition of the door courtesy switch and sends a signal to each ECU via the multiplex communication circuit.

Wiring Diagram:

Step 1-2:

Step 3:

Step 4:

Step 5:

INSPECTION PROCEDURE