Self-Diagnostic System
- Insert key in ignition switch and open driver's door. Ground wireless door lock ECU terminal No. 9 (Purple wire). Wait for at least one second. Remove key from ignition switch and close driver's door within 10 seconds. Press any button on known-good transmitter within 10 seconds. If each door lock motor operates, go to next step. If each door lock motor does not operate, check wireless door lock ECU. See PIN VOLTAGE TESTS . If found to be defective, replace wireless door lock ECU. Reprogram transmitter to new wireless door lock ECU. See TRANSMITTER PROGRAMMING . Retest system.
- If each door lock motor operates to lock side 3 times, check door lock motor feedback input line to receiver. Repair or replace as necessary. If wiring is okay, check wireless door lock ECU. See PIN VOLTAGE TESTS . If found to be defective, replace wireless door lock ECU. Reprogram transmitter to new wireless door lock ECU. See TRANSMITTER PROGRAMMING . Retest system operation. If each door lock motor operates to lock side one time, valid vehicle access code was received. Diagnostic check is okay.