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Test K: Driver Information Center Temperature Display Inaccurate: Testing

NOTE: Outside ambient air temperature sensor is also referred to as ambient air temperature sensor.
  1. Turn ignition off. Disconnect ambient air temperature sensor 2-pin connector. Connect Signal Generator and Instrument Panel Tester (J-33431-C) between signal circuit (Light Green/Black wire) and ground circuit (Black wire) of ambient temperature sensor harness connector. Turn ignition on, with engine off. Vary resistance of tester from 2500-11200 ohms. Disconnect one tester lead momentarily between resistance settings in order to quickly update Driver Information Center (DIC) display. For resistance and display values, see AMBIENT AIR TEMPERATURE SENSOR RESISTANCE  table. If display indicates correct temperature, go to step  4 . If display does not indicate correct temperature, go to next step.
  2. Test signal circuit of ambient temperature sensor for high resistance or open circuit. See WIRING DIAGRAMS  . If problem does not exist, go to next step. If problem exists, repair as necessary. After repair, go to step  8 .
  3. Test ground circuit of ambient temperature sensor for high resistance or open circuit. If problem does not exist, go to step  5 . If problem exists, repair as necessary. After repair, go to step  8 .
  4. Inspect for poor connections at harness connector of ambient temperature sensor. If problem exists, repair as necessary. After repair, go to step  8 . If problem does not exist, go to step  6 .
  5. Inspect for poor connections at harness connector of DIC. If problem exists, repair as necessary. After repair, go to step  8 . If problem does not exist, go to step  7 .
  6. Replace ambient air temperature sensor. See AMBIENT AIR TEMPERATURE SENSOR  under REMOVAL & INSTALLATION. After repairs, go to step  8 .
  7. Replace DIC display module. See DRIVER INFORMATION CENTER DISPLAY MODULE  under REMOVAL & INSTALLATION. After repairs, go to next step.
  8. Connect all disconnected components. Check system for proper operation. If system operates properly, test is complete. If system does not operate properly, go to step  1 .
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