Door Courtesy Light and Courtesy Switch Circuit

CIRCUIT DESCRIPTION

The door courtesy light goes on when the door is open and goes off when the door is closed.

The rear door RH ECU is defects the condition of the door courtesy switch and sends the information to the each ECU via the multiplex communication circuit.

Wiring Diagram:

Steps 1 - 3:

Steps 4 - 5:

INSPECTION PROCEDURE

HINT: In case of using the LEXUS hand-held tester, start the inspection from step 1 and in case of not using the LEXUS hand-held tester, start from step 2.