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.
On-Vehicle Inspection
- Perform the MAF meter inspection according to the procedure below.
- Only replace the MAF meter when the MAF value in the DATA LIST (with the engine stopped) is not within the normal operating range or there is foreign matter on the MAF meter platinum hot wire (heater).
- INSPECT MASS AIR FLOW METER
- Read the value (MAF) using the Techstream.NOTE:
- Perform the inspection with the vehicle indoors and on a level surface.
- Perform the inspection of the MAF meter while it is installed to the air cleaner case (installed to the vehicle).
- During the test, do not use the exhaust air duct to perform suction on the exhaust pipe.
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).NOTE:
Do not run the engine.
- Turn the Techstream ON.
- Enter the following menus: Powertrain / Engine / Data List / MAF.
- Wait 30 seconds, and read the values on the Techstream.
Specified Condition
Item Condition Specified Condition MAF - Engine not running
- 30 seconds after engine switch is turned on (IG)
Below 0.62 gm/sec. If the result is not as specified, replace the MAF meter.
If the result is within the specified range, inspect the MAF meter See step 1.
- Read the value (MAF) using the Techstream.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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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