Test Description

Operating door lock switches will isolate transmitter/receiver problem.
Checks for unlock signal at keyless entry receiver.
Checks for voltage on circuit No. 694. Voltage on circuit No. 694 would prevent driver's door lock motor from locking.
Checks that keyless entry receiver applies voltage to circuit No. 694 when unlock request is present.
Checks that keyless entry receiver grounds circuit No. 694 to enable a lock request.
Checks for an open in circuits No. 694 or 295 to driver's door lock motor.

Fig 1: Left Door Inoperative, Right Door Normal; Schematic

Courtesy of GENERAL MOTORS CORP.

Fig 2: Left Door Inoperative, Right Door Normal; Flow Chart

Courtesy of GENERAL MOTORS CORP.