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
Do not place any external magnets, such as magnetic roof mount antennas, in the vicinity of the Remote Compass Module (RCM) located under the instrument panel center stack hood. Do not place any electronic devices (cell phones, laptop computers, PDAs, portable DVD players, etc), on or near the instrument panel as the RCM performance may be effected. Do not use magnetic tools when servicing the RCM.
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)/Compass Temperature Display will not function properly if the bus messages are not properly received. If no EVIC/Compass Temperature Display data is displayed, check the CAN Data Bus circuit communications, the RCM (if equipped), the Instrument Cluster functions and the Totally Integrated Power Module (TIPM). Any diagnosis of the RCM and EVIC/Compass Temperature Display system should begin with the use of a scan tool and the appropriate diagnostic service information.
Vehicles equipped with a NAV radio, the compass feature is an integral part of the NAV system and is only serviced as an assembly with the radio. For more information, refer to DIAGNOSIS AND TESTING .
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.