Resistance inspection

NOTE:

The IAT sensor No. 1 is built into the MAF sensor. When replacing the IAT sensor No. 1, replace the MAF sensor/IAT sensor No. 1.

Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE 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.

Fig 1: Identifying MAF Sensor/IAT Sensor No. 1 Terminals
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 .)

IAT SPECIFICATION (REFERENCE)

Fig 2: IAT Temperature And Resistance Graph

Courtesy of MAZDA MOTORS CORP.