Component Testing

Fig. 7 MAP Sensor And Intake Air Temperature Sensor:

To perform a complete test of this sensor and its circuitry; refer to DRB or Scan Tool and appropriate Computers and Control Systems/System Diagnosis/Diagnostic Charts.

To test the sensor only, refer to the following:

1. With the key off, disconnect wire harness connector from the intake air temperature sensor.
2. Connect a high input impedance (digital) volt-ohmmeter to the sensor terminals. The ohmmeter should read as follows:
^ Engine/Sensor at room temperature around 70°F ohmmeter should read approximately 7,000 to 13,000 ohms.

3. Test the resistance of the wire harness between the PCM connector terminal 37 and the sensor harness connector. Also check for continuity between PCM connector terminal 43 and the sensor harness connector. Refer to Diagrams/Electrical for circuit information. If the resistance is greater than 1 ohm, repair the wire harness as necessary.