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Intake Air Temperature Sensor

  1. Disconnect manifold air temperature sensor. Using DVOM, check sensor resistance. Resistance should be as specified in the COOLANT TEMP SENSOR & IAT SENSOR RESISTANCE  table. If resistance is not as specified, replace sensor.
  2. Check resistance between PCM wiring harness terminal No. 21 and sensor connector terminal. Also check resistance between PCM wiring harness terminal No. 4 and sensor connector terminal. Repair wiring if resistance is greater than one ohm.
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