Resistance inspection

NOTE:

The IAT sensor No. 2 is built into the MAP sensor. When replacing the IAT sensor No. 2, replace the MAP sensor/IAT sensor No. 2.

Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
Remove the following parts:
1. Wiper arm (See WIPER ARM AND BLADE REMOVAL/INSTALLATION .)
2. Cowl grille (See COWL GRILLE REMOVAL/INSTALLATION .)
3. Front suspension tower bar (Vehicles with front suspension tower bar) (See FRONT SUSPENSION TOWER BAR REMOVAL/INSTALLATION .)
4. Air box complete (See AIR BOX COMPLETE REMOVAL/INSTALLATION .)
Disconnect the MAP sensor/IAT sensor No. 2 connector.
Remove the screw. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO. 2 REMOVAL/INSTALLATION .)
Remove the MAP sensor/IAT sensor No. 2. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO. 2 REMOVAL/INSTALLATION .)
Measure the resistance between MAP sensor/IAT sensor No. 2 terminals A and B.

Fig 1: Identifying MAP Sensor/IAT Sensor No. 2 Terminals
Courtesy of MAZDA MOTORS CORP.
- If not as specified, replace the MAP sensor/IAT sensor No. 2. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO. 2 REMOVAL/INSTALLATION .)

IAT SPECIFICATION (REFERENCE)

Fig 2: IAT Temperature And Resistance Graph

Courtesy of MAZDA MOTORS CORP.