Compass/Mini-Trip Computer Average MPH Or Fuel Economy Wrong, Compass/Mini-Trip Computer Trip Odometer Inoperative Or Wrong, Or Compass/Mini-Trip Computer Distance To Empty Wrong
- Turn ignition on. Using scan tool, select CMTC. Read CCD BUS information under SYSTEM MONITORS. If Mechanical Instrument Cluster (MIC) and Powertrain Control Module (PCM) message is NOT RECEIVED, go to next step. If MIC and PCM message is other than NOT RECEIVED, go to step 3 .
- Using scan tool, select MIC. Read PCM monitor under SYSTEM TEST. If PCM is ACTIVE on bus, replace CMTC. See OVERHEAD CONSOLE under REMOVAL & INSTALLATION. Perform BODY VERIFICATION TEST under VERIFICATION TESTS. If PCM is not ACTIVE on bus, go to NO RESPONSE FROM POWERTRAIN CONTROL MODULE under COMMUNICATIONS.
- Using scan tool, read DTCs. If no engine performance related codes are displayed, go to next step. If any engine performance related codes are displayed, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. Perform BODY VERIFICATION TEST under VERIFICATION TESTS.
- Turn ignition off. Use scan tool to activate instrument cluster self-test, or push and hold down trip odometer reset button. Turn ignition on. DO NOT start engine. Release trip odometer reset button. Compare operation of suspect instrument cluster with actuator test chart. See Figure . Instrument cluster will exit self-diagnostics mode at completion of test, or if ignition switch is turned off. If all gauges and indicator lights function correctly, replace CMTC. See OVERHEAD CONSOLE under REMOVAL & INSTALLATION. Perform BODY VERIFICATION TEST under VERIFICATION TESTS. If instrument cluster gauge(s) and/or indicator light(s) do not respond properly during self-test, replace instrument cluster. See appropriate INSTRUMENT PANELS article. Perform BODY VERIFICATION TEST under VERIFICATION TESTS.