Protege LX L4-2.0L DOHC (2001)
Intake Air Temperature Sensor: Testing and Inspection
INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION
Resistance Inspection
NOTE: Perform the following test only when directed.
1. Remove the IAT sensor.
Specification
2. Measure the resistance of the IAT sensor terminals A and B using an ohmmeter.
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If not as specified, replace the IAT sensor.
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If IAT sensor is okay, but PID value or PCM terminal 39 voltage are out of specification, carry out the "Circuit Open/Short Inspection".
IAT sensor signal characteristic (reference)
Circuit Open/Short Inspection
1. Disconnect the PCM connector.
2. Connect the SST (104 Pin Breakout Box) to the PCM as shown.
3. Tighten the connector attaching screw.
Tightening torque
7.9 - 10.7 N.m {80 - 110 kgf.cm, 69.5 - 95.4 in.lbf}