Diagnosis And Testing - Electronic Vehicle Information Center
Do not place any external magnets, such as magnetic roof mount antennas, in the vicinity of the compass module located in the above the headliner near the left D-pillar. Do not place any electronic devices (cell phones, laptop computers, PDAs, portable DVD players, etc), on or near the Remote Compass Module (RCM) as the performance may be effected. Do not use magnetic tools when servicing the RCM.
The Electronic Vehicle Information Center (EVIC) data is obtained from several components on the Controller Area Network (CAN) and Local Interface Network (LIN) Data Bus circuits; through the Body Control Module (BCM). The EVIC will not function properly if the bus messages from any of these components is not received. If no EVIC data is displayed or the display indicates dashes "- -", check the CAN Data Bus circuit communications, the Instrument Cluster functions, the RCM and the BCM).
The use of a scan tool and the proper diagnostic procedures information are recommended for further testing of the EVIC, the RCM, the BCM, and the CAN, and LIN Data Bus circuits.
For complete circuit diagrams, refer to appropriate SYSTEM WIRING DIAGRAMS article . 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.