Resistance Inspection

1. Remove the battery cover. (See BATTERY REMOVAL/INSTALLATION [13B-MSP] .)
2. Disconnect the negative battery cable.
3. Disconnect the MAF/IAT sensor connector.
4. Verify that the resistance between MAF sensor terminals D and E is as indicated in the table while blowing hot air gradually into the IAT sensor part built into the MAF sensor.

• If the monitor item condition/specification (reference) is not within the specification, even though the resistance is within the specification, perform the "Circuit Open/Short Inspection". (See CIRCUIT OPEN/SHORT INSPECTION .)
• If not within the specification, replace the MAF/IAT sensor. (See MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR REMOVAL/INSTALLATION .)

Fig 1: Identifying Intake Air Temperature (IAT) Sensor Connector Terminals

Courtesy of MAZDA MOTORS CORP.

IAT sensor resistance 

IAT sensor characteristics graph (reference) 

Fig 2: IAT Sensor Characteristics Graph

Courtesy of MAZDA MOTORS CORP.