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.
Diagnosis And Testing - Remote Compass Module
The Remote Compass Module (RCM) data is transferred on the Controller Area Network (CAN) data bus circuit. The RCM and Electronic Vehicle Information Center (EVIC) will not function properly if the bus messages are not properly received. If no EVIC data is displayed, check the CAN data bus circuit communications, the RCM, the Instrument Panel Cluster (IPC) function and the Body Control Module (BCM). Any diagnosis of the RCM and EVIC display should begin with the use of a scan tool and the appropriate diagnostic service information.
For complete circuit diagrams, refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.
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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.