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Resistance Inspection

Disconnect the mass air flow sensor connector.
Verify that the resistance between MAF sensor terminals D and E is within the specification.
- If the monitor item status/specification (reference) is not within the specification, even though the IAT sensor resistance is within the specification, perform the "Circuit Open/Short Inspection".
- If not within the specification, replace the MAF sensor.
  
  Fig 1: Identifying Intake Air Temperature (IAT) Sensor Connector Terminals
  Courtesy of MAZDA MOTORS CORP.

Standard

TEMPERATURE AND RESISTANCE CHART

Ambient temperature (°C {°F})	Resistance (kilohm)
-20 {-4.0}	13.6-18.4
20 {68}	2.21-2.69
60 {140}	0.493-0.667