Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Circuit/System Verification
In order to determine the best starting point to begin diagnosis first determine which features on the vehicle are functioning correctly or not. By performing a simple and quick check on the vehicle it can be determined if there is or isn't a fault in each feature. If any one part of the feature is faulty then the feature status is failed.
Match the status of all four features and go the suggested link to begin diagnosis.
The Front Side Door Access Control Transmitter will need to be reprogrammed in the event of BCM replacement. This can only be achieved with the master code found on the wallet card. If the master code is not retrievable, a new Front Side Door Access Control Transmitter with accompanying wallet card will need to be programmed to the new BCM.
Active Keyless Entry Verification
- Ignition off, stand approximately 10 meters (33 feet) from the vehicle.
- Verify that no other DTCs are set, as they could be the root cause of the issue.
- If any of the DTCs are set
Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Go to next step: If none of the DTCs are set
- If any of the DTCs are set
- Verify the keyless entry transmitter locks and unlocks the vehicle.
- If the vehicle either does not lock or does not unlock
Refer to Keyless Entry System Malfunction .
- Go to next step: If the vehicle locks and unlocks
- If the vehicle either does not lock or does not unlock
- Verify the Front Side Door Access Control Transmitter locks and unlocks the vehicle.
- Go to next step: If the vehicle either does not lock or does not unlock
Go to next step: Refer to circuit system testing below.
- Go to next step: If the vehicle locks and unlocks
- Go to next step: If the vehicle either does not lock or does not unlock
- All OK.
| Keyless Entry Transmitter Status | Front Side Door Access Control Transmitter Status | Most Probable Diagnostic Starting Point |
| Passed | Passed | - |
| Passed | Failed | Front Side Door Access Control Transmitter |
| Failed | Passed | Keyless Entry Transmitter |
| Failed | Failed | Remote Control Door Lock Receiver |
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.