Mazda 6 Service Manual: Intake air temperature (iat) sensor inspection

Mazda 6 Service Manual / Fuel and emission control systems / Control system / 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 the IAT PID are out of specification, perform the Circuit Open/Short Inspection.

Specification

Circuit Open/Short Inspection

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

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

Open circuit

If there is no continuity, the circuit is open. Repair or replace the 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, the circuit is shorted. Repair or replace the 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

Pcm configuration

1. Connect the WDS to DLC-2. 2. Set up the WDS (including the vehicle recognition.) 3. Select Module programming. 4. Select Programmable module installation. 5. Select PCM and perform procedures ...

Mass air flow (maf) sensor inspection

Voltage Inspection Note Perform the following inspection only when directed. 1. Visually inspect for the following on the MAF sensor. Damage Cracks Terminal bends Terminal rust ...

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