Visual inspection
- Remove the MAF sensor/IAT sensor No. 1. (See MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR No. 1 REMOVAL/INSTALLATION [H3T] ).
- Inspect the MAF sensor for the following.
- Dirt, damage and cracking
- Rust on sensor terminal
- Sensor terminal bending
- If a malfunction can be verified, repair or replace the MAF sensor/IAT sensor No. 1. (See MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR No. 1 REMOVAL/INSTALLATION [H3T] ).