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.
System Diagram
Input and output signals of each ECU
| Transmitting ECU | Receiving ECU | Signals | Communication Method |
|---|---|---|---|
| Main Body ECU | Steering Lock ECU | Power supply status (to steering lock motor) | LIN |
| Steering Lock ECU |
|
Sleep available status | LIN |
| Steering Lock ECU |
|
Lock / Unlock sensor status | LIN |
| Steering Lock ECU |
|
Steering lock status | LIN |
| Steering Lock ECU |
|
Motor control status | LIN |
| Steering Lock ECU |
|
Diagnostic response status | LIN |
| Steering Lock ECU |
|
Lock / Unlock sensor malfunction | LIN |
| Steering Lock ECU |
|
Power supply malfunction (to steering lock motor) | LIN |
| Steering Lock ECU |
|
Motor driver malfunction | LIN |
| Steering Lock ECU |
|
Lock bar (stuck) status | LIN |
| Steering Lock ECU |
|
Push button start function status | LIN |
| Steering Lock ECU |
|
Lock / Unlock relay drive status | LIN |
| Steering Lock ECU |
|
Engine start control status | LIN |
Use the Manual With the Right Hardware
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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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