Resistance inspection

WARNING: This page is about a different car, the 2017 Mazda CX-9. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

The MAP sensor and IAT sensor No. 2 cannot be removed as a single unit. When replacing the IAT sensor No. 2, replace the MAP sensor/IAT sensor No. 2.

Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
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: MAP Sensor/IAT Sensor No. 2 Connector 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 .)

Specification (Reference)

IAT (°C {°F})	Resistance (Kilohms)
0 {32}	Approx. 5.9
20 {68}	Approx. 2.5
80 {176}	Approx. 0.323
130 {266}	Approx. 0.0893

Fig 2: IAT Sensor No. 2 Temperature Resistance Graph

Courtesy of MAZDA MOTORS CORP.