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.
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HOMESERVICE MANUALSSUZUKI2013SX4 CROSSOVER, AUTOMATIC CVT TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTANTI-THEFT SYSTEMSSECURITY & LOCKSDIAGNOSTIC INFORMATION AND PROCEDURESPOWER DOOR LOCK SYSTEM SYMPTOM DIAGNOSIS
2013 Suzuki SX4 Crossover, Automatic CVT Trans
Power Door Lock System Symptom Diagnosis
2013 Suzuki SX4 Crossover, Automatic CVT TransSECTION Power Door Lock System Symptom Diagnosis
NOTE:
- Use of SUZUKI scan tool makes it easy to check whether a faulty condition is on the input side or output side of BCM. For checking procedure, refer to "DIAGNOSIS USING OUTPUT TEST FUNCTION OF SUZUKI SCAN TOOL " under Scan Tool Data .
- Check each part in the order from the top of the following list.
POWER DOOR LOCK SYSTEM SYMPTOM DIAGNOSIS
| Condition | Possible Cause | Action |
|---|---|---|
| All door can not be locked/unlocked by all of switches | Circuit fuse blown | Replace fuse and check for short circuit . |
| Wiring or grounding faulty | Repair circuit . | |
| BCM faulty | Replace after making sure that none of above parts is faulty . | |
| All door can not be locked/unlocked by only power door lock switch | Circuit fuse blown | Replace fuse and check for short circuit . |
| Power door lock switch faulty | Check power door lock switch referring to POWER DOOR LOCK SWITCH INSPECTION . | |
| Wiring harness connected to power door lock switch faulty | Repair . | |
| Wiring or grounding faulty | Repair circuit . | |
| BCM faulty | Replace after making sure that none of above parts is faulty . | |
| All door can not be locked/unlocked by only key cylinder switch | Circuit fuse blown | Replace fuse and check for short circuit . |
| Key cylinder switch faulty | Check key cylinder switch referring to DOOR KEY CYLINDER SWITCH INSPECTION . | |
| Wiring or grounding faulty | Repair circuit . | |
| BCM faulty | Replace after making sure that none of above parts is faulty . | |
| Only one door can not be locked/unlocked | Power door lock actuator faulty | Check actuator referring to POWER DOOR LOCK ACTUATOR INSPECTION . |
| Wiring harness connected to applicable door lock actuator faulty | Repair . | |
| BCM faulty | Replace after making sure that none of above parts is faulty . |
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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.