SC9K-2 Driver's Door Lock Function Inop, Passenger Door OK
DRIVER'S DOOR LOCK OR UNLOCK FUNCTION INOPERATIVE, PASSENGER DOOR LOCKS OPERATE NORMALLYSC9K-2:
Circuit Description
Lock function: Battery voltage is applied through the power door lock relay and CKT 295 to the driver's door lock motor. The driver's door lock motor is grounded through CKT 694 and the keyless entry receiver. Unlock function: The keyless entry receiver applies voltage to the driver's door lock motor through CKT 694. The driver's door lock motor is grounded through CKT 295 and the power door lock relay.
Test Description
Number(s) below refer to circled number(s) on the diagnostic chart.
1. Operating the door lock switches will isolate transmitter/receiver problem.
2. Check for unlock signal at the keyless entry receiver.
3. Check for voltage on CKT 694. Voltage on CKT 694 would prevent the driver's door lock motor from locking.
4. Check that the keyless entry receiver applies voltage to CKT 694 when an unlock request is present.
5. Check that the keyless entry receiver grounds CKT 694 to enable a lock request.
6. Check for open in CKT 295, or 694 to drivers door lock motor.
Diagnostic Aids
Program a known good transmitter and test the driver's door lock and unlock functions. If the driver's door lock and unlock functions operate normally, the original transmitter was defective. if the driver's door lock and unlock functions are still inoperative replace the keyless entry receiver. If a known good transmitter will not program, refer to SC9K-8. SC9K-8 Keyless Entry Receiver/Transmitter Will Not Program