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.
Gauge Control Module DTC Display: Notes
Set the multiplex in B-CAN System Diagnosis Test mode 1 (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE 1 AND TEST MODE 2 (WITHOUT THE HDS) ). While in Test Mode 1, the DTCs which have been detected and stored individually by various B-CAN (Body-controller Area Network) units, will be shown one by one on the multi-information display when the communication between the Multiplex Integrated Control Unit (MICU) and the gauge control module are normal. To scroll through the DTCs, press the SELECT/RESET button beside the gauge control module.
The unit that has stored the code can be identified by the number shown on the multi-information display.
| Control Unit | Control Unit I.D. Number |
|---|---|
| MICU | 10 |
| Relay control module | 11 |
| Door multiplex control unit | 30 |
| Gauge control module | 50 |
| Climate control unit | 51 |
| Display panel control unit | 52 |
| Combination switch control unit | 70 |
| Automatic lighting control unit | 72 |
| HandsFreeLink control unit | 94 |
| Power seat control unit | 95 |
| AcuraLink control unit | 97 |
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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.