Resistance inspection

The MAF sensor and IAT sensor No. 1 cannot be removed as a single unit. When replacing the IAT sensor No. 1, replace the MAF sensor/IAT sensor No. 1.

Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Disconnect the MAF sensor/IAT sensor No. 1 connector.
Measure the resistance between MAF sensor/IAT sensor No. 1 terminals A and B.

Courtesy of MAZDA MOTORS CORP.
- If not as specified, replace the MAF sensor/IAT sensor No. 1. (See MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO. 1 REMOVAL/INSTALLATION .)