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.
Circuit/System Description
The navigation radio communicates with the Color Display Module over the CAN Graphical Interface (CGI) serial data circuit. The CGI circuit is a UART - based serial data interface used to transfer messages and high rate display graphics.
When the Color Display Module is in the active state, the radio needs to determine if the module is communicating properly. The radio initiates the Display Status Message to the module and waits for a proper status response message back from the module. If after 30 communication attempts without a proper response, the radio holds down the reset circuit in order to reset the module.
This DTC indicates an internal ECU fault of the Color Display Module located on the Display Module Actuator. No external circuits are involved.
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.