#
MASS AIR FLOW (MAF) SENSOR INSPECTION

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  Note

  • Perform the following inspection according to the DATA MONITOR function (indicated by the monitor item from here onwards).

## Visual inspection

1. Visually inspect the MAF sensor for the following:

  • Damage, cracks
  • Rusted sensor terminal
  • Bent sensor terminal

  - If there is any malfunction, replace the MAF/IAT sensor.
  - If the monitor item condition/specification (reference) is not within the specification, even though there is no malfunction, carry out the "Circuit Open/Short Inspection".

## Circuit Open/Short Inspection

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

### Open circuit

  • If there is no continuity, the circuit is open. Repair or replace the wiring harness.
  - MAF sensor terminal A and PCM terminal 2BG
  - MAF sensor terminal B and PCM terminal 2BC
  - MAF sensor terminal C and PCM terminal 2AU

### Short circuit

  • If there is continuity, the circuit is shorted. Repair or replace the wiring harness.
  - MAF sensor terminal A and power supply
  - MAF sensor terminal A and body GND
  - MAF sensor terminal B and power supply
  - MAF sensor terminal C and power supply
  - MAF sensor terminal C and body GND