Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2015 Subaru BRZ Limited, Automatic TransFACTORY OEM SERVICE PROCEDURE

Unit Inspection

Inspection of intake air flow meter sub-assembly

Use a working lamp, visually check the platinum filament (heater) portion of the intake air flow meter sub-assembly for foreign matter.

Fig 1: Checking Platinum Filament (Heater) Portion Of Intake Air Flow Meter Sub-Assembly
Courtesy of SUBARU OF AMERICA, INC.

Criteria: No foreign matter

NOTE: If there is a foreign matter on the platinum filament (heater), replace the intake air flow meter sub-assembly.

Inspection of intake temperature sensor resistance

Measure the resistance between the terminals.

Resistance

Inspection terminals	Inspection conditions	Standard value
1 - 2	-20°C {-4°F}	13.6 to 18.4 kΩ
	20°C {68°F}	2.21 to 2.69 kΩ
	60°C {140°F}	0.49 to 0.67 kΩ

Fig 2: Intake Air Flow Meter Sub-Assembly Connector Terminal Identification

Courtesy of SUBARU OF AMERICA, INC.

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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