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Air Temperature Sensor ( Ambient / Intake ): Testing and Inspection

To perform a complete test of the intake manifold air temperature sensor and its circuitry, refer to DRB tester and appropriate Powertrain Diagnostics Procedures. To test the sensor only, refer to the following:

Intake Manifold Air Temperature Sensor-Typical:




1. Disconnect the wire harness connector from the intake manifold air temperature sensor.




2. Test the resistance of the sensor with an input impedance (digital.volt-ohmmeter. The resistance (as measured across the sensor terminals.should be as shown in the previous SENSOR RESISTANCE (OHMS)-COOLANT TEMPERATURE SENSOR/IN-TAKE AIR TEMPERATURE SENSOR chart. Replace the sensor if it is not within the range of resistance specified in the chart.
3. Test the resistance of the wire harness. Do this between the PCM wire harness connector A-15 and the sensor connector terminal. Also check between PCM connector A-4 to the sensor connector terminal. Repair the wire harness as necessary if the resistance is greater than 1 ohm.
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