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Home >> Oldsmobile >> 1984 >> Toronado 4.1 4 >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel - Electronic >> Testing >> Inside Ambient Air Temperature Incorrect Or Does Not Vary

Inside Ambient Air Temperature Incorrect Or Does Not Vary

  1. Turn ignition on. Ensure "INSIDE" temperature is displayed. If not, push "TEMP" button one time. Record inside ambient air temperature displayed. Compare that temperature with a thermometer. Difference should be no more than 2°F.
  2. If temperature varies, remove left front speaker cover. Disconnect negative battery cable. Unplug cluster harness connector. Measure resistance between pins C (Dark Green wire) and U (Black wire) of cluster harness connector. Compare readings to Temperature Sensor Resistance chart.
    TEMPERATURE SENSOR RESISTANCE

    Ohms Temperature °F (°C)
    53,100 -22 (-30)
    21,894 5 (-15)
    12,702 23 (-5)
    9798 32 (0)
    5970 50 (10)
    3747 68 (20)
    3000 77 (25)
    2417 86 (30)
    1960 95 (35)
    1597 104 (40)
    1310 113 (45)
  3. If resistances are as specified, replace cluster. If resistances are incorrect, replace inside temperature sensor.