Mazda 6 manuals

Mazda 6 Service Manual: Mass air flow (maf) sensor inspection

Mazda 6 Service Manual / Fuel and emission control systems / Control system / Mass air flow (maf) sensor inspection

Voltage Inspection

Note

1. Visually inspect for the following on the MAF sensor.

- If any of the above are found, replace the MAF sensor.

- If the MAF PID value is out of specification, carry out the Circuit Open/Short Inspection.

Circuit Open/Short Inspection

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


2. Disconnect the MAF sensor connector.

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

Open circuit

- MAF sensor terminal A (harness-side) and main relay terminal C (harness-side)

- MAF sensor terminal B (harness-side) and PCM terminal 2AC (harness-side)

- MAF sensor terminal C (harness-side) and PCM terminal 1P (harness-side)

Short circuit

- MAF sensor terminal A (harness-side) and body GND

- MAF sensor terminal C (harness-side) and power supply

- MAF sensor terminal C (harness-side) and body GND

- MAF sensor terminal B (harness-side) and power supply

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