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Home >> Mazda >> 2004 >> 6 L4-2.3L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Air Temperature Sensor ( Ambient / Intake ) >> Testing and Inspection
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Air Temperature Sensor ( Ambient / Intake ): Testing and Inspection

INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION

Resistance Inspection

NOTE: Perform the following inspection only when directed

1. Disconnect MAF/IAT sensor.










2. Measure the resistance between the MAF/IAT sensor terminals D and E using an ohmmeter
- If not as specified, replace the MAF/IAT sensor
- If the MAF/IAT sensor is okay, but PID are out of specification, perform the "Circuit Open/Short Inspection".

Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION.)




2. Inspect the following wiring harnesses for 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 (harness-side) and PCM terminal 2E (harness-side)
- MAF/IAT sensor terminal E (harness-side) and PCM terminal 2H (harness-side)

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