MASS AIR FLOW (MAF) SENSOR INSPECTION

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