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Test G: Driver Information Center (DIC) Temperature Display Inaccurate Or Inoperative

WARNING: This page is about a different car, the 2002 Chevrolet Monte Carlo, 2002 Chevrolet Impala, 2001 Chevrolet Monte Carlo, and 2001 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform driver information center system diagnostic system check. See DRIVER INFORMATION CENTER SYSTEM DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM. If driver information center system diagnostic system check has been performed, go to next step.
  2. Turn ignition switch to RUN position. Set DIC to compass/temperature display and compare with ambient temperature. If display temperature agrees with ambient temperature, check for intermittent problem. See DIAGNOSING INTERMITTENTS  . Repair or replace as necessary. After repair, go to step  10 . If display temperature does not agree with ambient temperature, go to next step.
  3. Disconnect ambient air temperature sensor, located on front radiator air baffle. Connect Signal Generator and Instrument Panel Tester (J33431-C) between ambient air temperature sensor harness connector terminals. Set resistance on Signal Generator and Instrument Panel Tester (J33431-C) to 3047 ohms. Verify resistance setting with an ohmmeter. Turn ignition switch to RUN position. If DIC does not display 130°F (54°C), go to next step. If DIC displays 130°F (54°C), go to step  6 .
  4. Check for high resistance in Light Green/Black wire between ambient air temperature sensor and DIC Black 9-pin connector C1 terminal No. 10. Repair as necessary and go to step  10 . See WIRING DIAGRAMS  . If wire is okay, go to next step.
  5. Check for high resistance in Black/White wire between ambient air temperature sensor and ground connector G203. See Figure . Repair as necessary and go to step  10 . See WIRING DIAGRAMS  . If wire is okay, go to step  7 .
  6. Disconnect ambient air temperature sensor connector. Check for poor connection at ambient air temperature sensor connector. Repair as necessary and go to step  10 . If connection is okay, go to step  8 .
  7. Disconnect DIC connector. Check for poor connection at DIC connector. Repair as necessary and go to step  10 . If connection is okay, go to step  9 .
  8. Replace ambient air temperature sensor. After repair, go to step  10 .
  9. Replace DIC and calibrate compass. See DRIVER INFORMATION CENTER (DIC)  under REMOVAL & INSTALLATION. Go to next step.
  10. Using scan tool, clear DTCs. Operate system to verify repair. If system operates normally, repair is complete. If system does not operate normally, return to step  2 .
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