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Home >> Mazda >> 2006 >> Mazdaspeed6 L4-2.3L Turbo >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Air Temperature Sensor ( Ambient / Intake ) >> Testing and Inspection >> Intake Air Temperature (IAT) Sensor Inspection
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Intake Air Temperature (IAT) Sensor Inspection

INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION [L3 WITH TC]

Resistance Inspection

NOTE: Perform the following inspection only when directed.

1. Disconnect the MAF/IAT sensor.
2. Measure the resistance between the MAF/IAT sensor terminals D and E using a tester.
- If not as specified, replace the MAF/IAT sensor.
- If the MAF/IAT sensor is normal, but the PID is out of specification, perform the "Circuit Open/Short Inspection".




Specification

Circuit Open/Short Inspection

1. Disconnect the PCM connector.




2. Inspect the following wiring harnesses for an open or short circuit. (Continuity check)

Open circuit
- If there is no continuity, there is an open circuit. Repair or replace the wiring harness.
- MAF/IAT sensor terminal D and PCM terminal 2V
- MAF/IAT sensor terminal E and PCM terminal 2H

Short circuit
- If there is continuity, there is a short circuit. Repair or replace the wiring harness.
- MAF/IAT sensor terminal E and power supply
- MAF/IAT sensor terminal D and power supply
- MAF/IAT sensor terminal D and body ground
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