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 Signals
The following system signals are dependent upon the associated CAN ECUs equipped in the vehicle and configuration.
| Input/Output Communications To System CAN ECUs: CAN-IHS, CAN-FD-3, 8; LVDS | ||
|---|---|---|
| CAN-FD-1 | BCM | Configuration data and DTC status from various ECUs. |
| CAN-FD-3 | BCM | Battery voltage, critical state, load shedding. |
| Passenger screen ON / OFF request. | ||
| Passenger screen LED control status. | ||
| CAN-FD-8 | BCM | Battery voltage, critical state, load shedding. |
| Passenger screen ON / OFF request. | ||
| RADIO | Power, display intensity, status | |
| Touch screen X and Y axis values | ||
| Rear seat entertainment touch screen | ||
| TBM2 | Service call type and status | |
| Passenger screen LED control status. | ||
| CAN-IHS | BCM | Power and operational mode status. |
| Ignition position. | ||
| Ignition run active for remote start. | ||
| Daylight brightness | ||
| DDM and PDM indicator status. | ||
| System voltage and load shedding status. | ||
| VIN information | ||
| Configuration data and DTC status from various ECUs. | ||
| DSM | Power, Enter, Screen Off / On. | |
| Tune knob direction. | ||
| Volume knob direction and value. | ||
| FPDM | Screen status. | |
| ICS | Radio knob(s) direction and value. | |
| Radio button(s) status. | ||
| RADIO | Power, display intensity, display status | |
| SGW | Mute button pressed or not pressed. | |
| CCDMF screen open / close status | ||
| LVDS | RADIO | Display |
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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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