MAF sensor

Thank you for using 2carpros. Com. Here are the directions for testing and specification. Please note that the sensor should be checked when the engine is running to determine proper specifications. See last picture for specification information. Additionally, you will need a live data scanner.

MAF Sensor Inspection:
Visually inspect for damage, cracks, terminal bends and terminal rust on the MAF sensor.
If any of the above are found, replace the MAF sensor.
If the MAF sensor PID value or PCM terminal 88 voltage are out of specification, carry out the "Circuit Open/Short Inspection".
Circuit Open/Short Inspection
Disconnect the PCM connector.

Connect the SST (104 Pin Breakout Box) to the PCM as shown.
Tighten the connector attaching screw.
Tightening torque:
7.9 - 10.7 N.M 80 - 110 kgf. Cm, 69.5 - 95.4 in. Lbf

Inspect for an open or short circuit in the following wiring harnesses by probing the applicable sensor and SST (104 Pin Breakout Box) terminals with ohmmeter leads.
If there is an open or short circuit, repair or replace wiring harnesses.
If there is no open or short circuit, replace the MAF sensor.
Open circuit
MAF signal circuit (MAF sensor connector terminal C and PCM connector terminal 88)
Power circuit (MAF sensor connector terminal A and main relay terminal D through common connector)
GND circuit (MAF sensor connector terminal B and PCM connector terminal 77 through common connector)
Short circuit
MAF signal circuit (MAF sensor connector terminal C and PCM connector terminal 88 to GND)
Power circuit (MAF sensor connector terminal A and main relay terminal D through common connector to GND)
Reconnect the MAF sensor connector.

NOTE: The If you have a scan too, it should show the MAF rate and load value. Please refer to the last picture which shows specifications.

Let me know if this helps.

Thanks,
Joe