Illumination Circuit
ILLUMINATION CIRCUITCIRCUIT DESCRIPTION
The body ECU and the back door ECU detect the condition of each door courtesy light switch.
FRONT COURTESY LIGHT SWITCH CONTROL:
The 2 front courtesy light switches are directly connected to the body ECU and back door ECU. If the courtesy light switch is turned on (a front door is opened), voltage applied to terminal ILE of the body ECU is grounded inside the ECU and the step light, front courtesy light, etc. come on.
REAR COURTESY LIGHT SWITCH CONTROL:
The 2 rear courtesy light switches are directly connected to the body ECU and back door ECU via each courtesy light. The rear courtesy light comes on when a rear door is opened.
Wiring Diagram:
Wiring Diagram:
Step 1 - 2:
Step 3:
INSPECTION PROCEDURE
HINT: When using the hand-held tester, start the inspection from step 1 and when not using the hand-held tester, start from step 2.