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Air Temperature Sensor

  1. Connect ohmmeter across pins 30 and 33 in control unit connector and across pins 34 and 25 in air flow meter connector. With intake air temperature above 68°F (20°C), resistance should be below 2900 ohms. At temperatures below 68°F (20°C), resistance should be above 2100 ohms.
  2. If resistance is not correct, repeat test at air flow meter terminals. Repair harness or replace meter as necessary. See Figure.
  3. Connect ohmmeter between ground and pin 30 at connector. Reading should be infinity. Repeat check at air flow meter terminal and body. Repair harness or replace meter as necessary.
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