FixVault

One Gauge Not Operating Properly

  1. While monitoring inoperative gauge, perform MECHANICAL INSTRUMENT CLUSTER (MIC) SELF-TEST  . If needle of inoperative gauge reached all calibration points during test, go to next step. If needle of inoperative gauge did not reach all calibration points during test, replace Mechanical Instrument Cluster (MIC). See ANALOG INSTRUMENT PANELS - DAKOTA & DURANGO article.
  2. If problem is with speedometer, go to next step. If problem is with fuel gauge, oil pressure gauge, tachometer gauge, temperature gauge or voltage gauge, check PCM for DTCs. Go to appropriate diagnostic procedure for DTC(s) present. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. Using scan tool, read Powertrain Control Module (PCM) DTCs. If any PCM DTCs are present, see appropriate procedure for DTC message displayed. If no PCM DTC is present, perform BODY VERIFICATION TEST  .
  3. Using scan tool, select BODY, SYSTEMS TESTS, then read PCM MONITOR state. If scan tool displays state as PCM ACTIVE ON BUS, go to next step. If scan tool does not display PCM ACTIVE ON BUS state, go to NO RESPONSE POWERTRAIN CONTROL MODULE (PCM). 
  4. Raise and support all wheels. Start engine and place gear selector in drive. Using scan tool, monitor Vehicle Speed Sensor (VSS) state and compare to speedometer reading. If VSS state value displayed on scan tool, and speedometer value displayed match, see appropriate ANTI-LOCK article in BRAKES for related symptoms. If VSS state and speedometer values do not match, replace MIC. Perform BODY VERIFICATION TEST  .