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Air Temperature Sensor

  1. Disconnect air temperature sensor connector. Turn ignition on. Check voltage between Red/Black wire terminals and ground. If voltage is not 4-5 volts, check sensor resistance or wiring harness for open or short.
  2. Remove air temperature sensor and place it in water with a thermometer. Heat water to specified temperature and check resistance. See AIR TEMPERATURE SENSOR RESISTANCE table. Replace air temperature sensor if resistance is not within specification.
AIR TEMPERATURE SENSOR RESISTANCE

Temperature Ohms
68°F (20°C) 2280-2870
176°F (80°C) 290-390
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