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Temperature Gauge Not Operating Properly

WARNING: This page is about a different car, the 2002 Dodge Ram Wagon, 2002 Dodge Ram Van, 2001 Dodge Ram Wagon, and 2001 Dodge Ram Van. However, it is still accessible from the selected car via links, so may be relevant.

Possible Causes:

  1. Instrument Cluster
  2. ECT Sensor DTC's Present In Powertrain Control Module
  1. Turn ignition on. Using scan tool, attempt to communicate with Electro-Mechanical Instrument Cluster (EMIC). If scan tool communicates with EMIC, go to next step. If scan tool does not communicate with EMIC, perform NO RESPONSE FROM INSTRUMENT CLUSTER  test under COMMUNICATIONS.
  2. Turn ignition off. Push and hold trip/odometer reset button while turning ignition switch to RUN position. Release trip/odometer reset button to start self-test. Observe Engine Coolant Temperature (ECT) gauge. ECT gauge should reach specified calibration points. See INSTRUMENT CLUSTER CALIBRATION POINTS  table under SELF-DIAGNOSTIC SYSTEM. If ECT gauge reaches specified calibration points, go to next step. If ECT gauge does not reach specified calibration points, replace EMIC. See ELECTRO-MECHANICAL INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION.
  3. Using scan tool, read Powertrain Control Module (PCM) DTCs. If any ECT sensor DTCs (P0117, P0118, P0125 or P1281) are present, perform appropriate test(s) in appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If no ECT sensor DTCs are present, check ECT sensor. See appropriate procedure in appropriate SYSTEM & COMPONENT TESTING article in ENGINE PERFORMANCE.
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