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.
Diagnostic Trouble Code Table
HINT:
If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the reference below.
| DTC Code | Detection Item | Trouble Area | Reference |
|---|---|---|---|
| B2781 | Open/Short in Steering Lock ECU | - Harness or connector of LIN bus line - Certification ECU - Steering lock actuator (Steering lock ECU) |
Refer to DTC B2781: Open/Short in Steering Lock ECU |
| B2782 | Power Source Control ECU Malfunction | - Steering lock actuator (Steering lock ECU) - Wire harness or connector - Main body ECU |
Refer to DTC B2782: Power Source Control ECU Malfunction |
| B2788 | IG2 Signal Malfunction | - Wire harness or connector - Steering lock actuator (Steering lock ECU) - Main body ECU - IG2 relay |
Refer to DTC B2788: IG2 Signal Malfunction |
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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