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.
Combination Meter Assembly & Vehicle Speed Sensor: General Description
Some of the combination meter indications are based on information from ECUs via CAN bus communication. If there is any failure in the meters connected via the CAN bus communication, diagnose the CAN bus communication system. The following instruments, indicator lights and warning lights in the combination meter are controlled by ECUs via CAN bus communication.
| ITEM | INSTRUMENTS, INDICATOR LIGHTS, AND WARNING LIGHTS | ECU SENDING DATA VIA CAN COMMUNICATION |
|---|---|---|
| Meter | Tachometer | Powertrain control module |
| Speedometer | ||
| Engine coolant temperature gauge | ||
| Odometer | ||
| Indicator lamp | High-beam | ETACS-ECU |
| Turn-signal | ||
| Front fog | ||
| Door ajar | ||
| A/T shift position | Powertrain control module | |
| A/T fluid temperature | ||
| Auto cruise | ||
| ABS | ABS-ECU | |
| ASC/TCL | ASC/TCL-ECU | |
| Warning lamp | Service engine soon | Powertrain control module |
NO RELATED
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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.