For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
1 | Attempt to operate the vehicle courtesy lamps and the power door locks. Are the courtesy lamps and power door locks operational? | Go to Step 2 | Go to Body Control Module Inoperative in Body Control Systems
2 | Check for body control module (BCM) DTCs. Refer to Diagnostic Trouble Code (DTC) Displaying in Body Control Systems. Does the BCM sound and flash DTC 8? | Go to DTC 8 Remote Keyless Entry | Go to Step 3
3 | Does the BCM display or sound any other DTCs? | Go to Diagnostic Trouble Code (DTC) List/Type in Body Control Systems | Go to Symptoms - Keyless Entry