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Instrument Cluster Test 11A - Temperature Gauge Led Malfunction

NOTE: Perform INSTRUMENT CLUSTER TEST 1A  before proceeding with this test. For connector terminal identification, refer to CONNECTOR IDENTIFICATION  . For wiring diagrams, refer to WIRING DIAGRAMS  . Perform, after each repair, VERIFICATION TEST VER-1A - BODY VERIFICATION TEST  .
CAUTION: Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
  1. Ensure engine cooling system is functioning correctly. Repair as needed. Using scan tool, select BODY SYSTEM TESTS, then PCM MONITOR. If scan tool displays ENGINE CONTROLLER ACTIVE ON THE BUS, go to next step. If scan tool does not display ENGINE CONTROLLER ACTIVE ON THE BUS, go to TEST 8A  in VEHICLE COMMUNICATIONS.
  2. Using scan tool, select MODULE ENGINE CONTROLLER. Read Powertrain Control Module (PCM) DTCs. If scan tool displays ECT SENSOR VOLTAGE TOO HIGH, go to appropriate article:
    • G - TESTS W/CODES - 2.7L.
    • G - TESTS W/CODES - 3.2L.

If scan tool does not display ECT SENSOR VOLTAGE TOO HIGH, go to next step. If scan tool displays ECT SENSOR VOLTAGE TOO LOW, go to appropriate article:

If scan tool does not display ECT SENSOR VOLTAGE TOO LOW, replace PCM. See Figure in INSTRUMENT CLUSTER TEST 4B.

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