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MAF Sensor wiring

james125
james125
in Ford Fusion Club

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I'm trying to have a play around with the MAF sensor by modifying the signal the the ECU receives, but I can't quite figure out the pin out. There is nothing in the haynes manual about it.

I think it should have a 2nd ground for the chassis and ECU. Anyone know why pin 4 is 14.4V?

Ford_MAF_1.6tdci.png

  • Quote


    4 is the ignition feed - 14.4v is alternator charging voltage so that's fine.

    2 is earth as you say

    1 is PCM reference (5v)

    5 is MAF signal

    The IAT is separate on this engine hence the empty pins.

     

  • Quote
    • Author

    Thanks for the reply.

    Shouldn't the MAF signal be from 0 to 5V though?

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