Resistance Inspection

WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery cable.
Disconnect the MAF/IAT sensor connector.
Measure the resistance between the MAF/IAT sensor terminals D and E using an ohmmeter.
- If the IAT sensor is okay, but the PID value is out of specification, perform the "Circuit Open/Short Inspection".
- If not as specified, replace the MAF/IAT sensor. (See INTAKE AIR SYSTEM REMOVAL/INSTALLATION .)
  
  Fig 1: Identifying Intake Air Temperature Sensor
  Courtesy of MAZDA MOTORS CORP.

Specification

SPECIFICATION

Ambient temperature (°C {°F})	Resistance (kilohm)
-20 {-4}	13.6-18.4
20 {68}	2.21-2.69
60 {140}	0.493-0.667

Fig 2: Intake Air Temperature/Resistance Graph

Courtesy of MAZDA MOTORS CORP.