2013 Mazda MX-5 Miata Grand Touring, Automatic TransFACTORY OEM SERVICE PROCEDURE

Resistance Inspection

  1. Remove the battery cover.
  2. Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [LF] ).
  3. Disconnect the MAF/IAT sensor connector.
  4. Verify that the resistance between MAF/IAT 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/IAT sensor. (See MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR REMOVAL/INSTALLATION ).
      Fig 1: Identifying MAF/IAT Sensor Connector Terminals
      G06151075Courtesy of MAZDA MOTORS CORP.
STANDARD

Ambient temperature (°C {°F}) Resistance (kilohm)
20 {68} 2.21-2.69
60 {140} 0.493-0.667
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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