Back Door Key Lock and Unlock Switch Circuit

BACK DOOR KEY LOCK AND UNLOCK SWITCH CIRCUIT

CIRCUIT DESCRIPTION

The back door ECU operates the back door lock motor based on information from the back door key lock and unlock switch.

The back door power window goes up when the key is inserted into the cylinder and turned to the LOCK position. The window goes down when the key is turned to the UNLOCK position.

Wiring Diagram:

Step 1:

Step 2 - 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.