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System Tests: Notes

NOTE: A New Generation Star (NGS) tester or other OBD-II compliant scan tool and digital multimeter is required for testing the power door lock system. After repair is complete, clear any Diagnostic Trouble Codes (DTCs) that exist and recheck system for proper operation.
NOTE: Keep driver's window rolled down when performing tests to avoid getting locked out of vehicle. Before beginning any testing, ensure battery is fully charged. Lubricate door lock latch and linkage system. Manually cycle door locks 10 times to ensure proper operation.
SYMPTOM INDEX

Symptom Perform Test
Doors Do Not Lock/Unlock With Remote Transmitter A 
Autolock Does Not Operate Properly B 
Memory Seat Does Not Operate Using Remote Transmitter C 
No Communication With RAP Module D 
Doors Do Not Lock/Unlock Using Keypad E 
No Communication With GEM Module F 
Illuminated Entry Does Not Operate With Transmitter (1)
(1) See ILLUMINATION/INTERIOR LIGHTS article for diagnosis.