Door Courtesy Light and Courtesy Switch Circuit
DOOR COURTESY LIGHT AND COURTESY SWITCH CIRCUITCIRCUIT DESCRIPTION
The door courtesy light goes on when the door is opened and goes off when closed.
The driver door ECU and Passenger door ECU detects the condition of the door courtesy switch and sends a signal to each ECU via the multiplex communication circuit.
Wiring Diagram:
Step 1 - 4:
INSPECTION PROCEDURE