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.
Inspection & Verification: Electrical
- Battery
- Blown Fuse: 30A DOOR LOCK; 10A ROOM; 15A RADIO
- Circuitry Open/Shorted
- Damaged Door Lock Actuator
- Damaged Trunk Release Solenoid (Sedan)
- Damaged Liftgate Actuator
- Low Remote Transmitter Battery
Inspect wiring harness for obvious signs of shorts, opens, bad connections or damage. If concern is not visually evident, use New Generation Star (NGS) Tester (007-00500), and retrieve Diagnostic Trouble Codes (DTCs) following manufacturer's instructions. If no DTCs are present, go to SYSTEM TESTS SYMPTOM INDEX TABLE. If DTCs are present, see TROUBLE CODE INDEX TABLE.
| DTC | Possible Cause | System Test | |
|---|---|---|---|
| System "A" | |||
| B1309 | Door Lock Circuit Short To Ground | A | |
| B1341 | Door Unlock Circuit Short To Ground | A | |
| System "B" | |||
| B1309 | Door Lock Circuit Short To Ground | C | |
| B1341 | Door Unlock Circuit Short To Ground | C | |
| Symptom | Possible Cause | Test |
|---|---|---|
| Driver's Door Only System (System "A") Doors Do Not Lock Or Unlock With Transmitter | Fuse, Wiring, Transmitter, RAP Module | A |
| 4-Door System (System "B") One Door Lock Inoperative | Wiring, Actuator | B |
| All Door Locks Inoperative (System "B") | Fuse, Wiring, Switch, Relay | C |
| All Door Locks Operate From One Switch Only (System "B") | Ground, Wiring, Switch | D |
| Doors/Trunk Do Not Lock Or Unlock With Transmitter (System "B") | Fuse, Transmitter, Wiring, Module | E |
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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.
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