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.
Problem Symptoms Table
Proceed to the reference page shown in the table below for each malfunction symptom and troubleshoot each circuit.
HINT:
The theft deterrent system is based on the premise that the door lock control system and the wireless door lock control system are operating normally. Check these systems first before troubleshooting the theft deterrent system.
| Symptom | Suspected Area |
|---|---|
| Theft deterrent system cannot be set |
|
| Security indicator does not blink when theft deterrent system is set |
|
| Alarm sounding state cannot be canceled when ignition switch is turned from ON to OFF 10 times within 15 seconds |
|
| Theft deterrent system can be set even when a door is open |
|
| Horns (low pitched, high pitched) do not sound while theft deterrent system is in warning operation |
|
| Headlamps do not flash while theft deterrent system is in warning operation |
|
| Taillamps do not flash while theft deterrent system is in warning operation |
|
| Hazard warning lamps do not flash while theft deterrent system is in warning operation |
|
| Room lamp does not illuminate while theft deterrent system is in warning operation |
|
| Security horn does not sound while theft deterrent system is in warning operation |
|
| Headlamps flash even when theft deterrent system is not set |
|
| Taillamps flash even when theft deterrent system is not set |
|
| Hazard warning lamps flash even when theft deterrent system is not set |
|
| Room lamp illuminates even when theft deterrent system is not set |
|
If the suspected areas are found to be functioning normally, replace the instrument panel J/B assy (multiplex network body ECU).
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.