#
MASS AIRFLOW (MAF) SENSOR INSPECTION [MZR-CD (RF Turbo)]

id0140f1800700

  Note

  • Perform the following test only when directed.

## Voltage Inspection

1. Turn the engine switch to ON.

2. Monitor the MAF PID using the WDS or equivalent.

  • If not as specified, perform the "Circuit Open/Short Inspection".

  - If there is no open/short circuit, replace the MAF/IAT sensor. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)])

MAF PID

  0.0-1.0 V

3. Start the engine and warm up the engine completely.

4. Monitor the MAF PID using the WDS or equivalent at idle.

  • If not as specified, perform the "Circuit Open/Short Inspection".

  - If there is no open/short circuit, replace the MAF/IAT sensor. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)])

MAF PID

  1.5-2.1 V

## Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)])

2. Inspect for open/short circuit in the following wiring harnesses.

  • If there is open/short circuit, repair or replace wiring harnesses.

### Open circuit

  • MAF/IAT sensor terminal A and PCM control relay terminal C
  • MAF/IAT sensor terminal B and PCM terminal 73
  • MAF/IAT sensor terminal C and PCM terminal 54

### Short circuit

  • MAF/IAT sensor terminal A and power supply
  • MAF/IAT sensor terminal A and body ground
  • MAF/IAT sensor terminal B and power supply
  • MAF/IAT sensor terminal C and power supply
  • MAF/IAT sensor terminal C and body ground