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Ambient Temperature Sensor Test

  1. Turn the ignition OFF.
  2. Disconnect the ATS harness connector.
  3. Measure the resistance of the ATS using the following min/max values:
    • 0° C (32° F) Sensor Resistance = 29.33 - 35.99 Kilohms
    • 10° C (50° F) Sensor Resistance = 17.99 - 21.81 Kilohms
    • 20° C (68° F) Sensor Resistance = 11.37 - 13.61 Kilohms
    • 25° C (77° F) Sensor Resistance = 9.12 - 10.86 Kilohms
    • 30° C (86° F) Sensor Resistance = 7.37 - 8.75 Kilohms
    • 40° C (104° F) Sensor Resistance = 4.90 - 5.75 Kilohms

    The sensor resistance should read between these min/max values. If the resistance values are not OK, replace the Sensor.

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