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Registered:
November 2002
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 Air Flow Meter Tech
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Thu, 14 April 2005 08:48
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Does anyone have some technical information on the inner workings of a typical Toyota AFM ?
I particularly want to find out all the inputs and outputs and how the ECU uses them.
Thanks.
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Location:
Perth
Registered:
July 2004
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Re: Air Flow Meter Tech
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Thu, 14 April 2005 08:54
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pull one apart.. they are pretty simple.
either a gate, or a hotwire.
google is your friend!
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: Air Flow Meter Tech
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Thu, 14 April 2005 08:55
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That Autoshop 101 site should have something.
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Registered:
November 2002
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Re: Air Flow Meter Tech
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Thu, 14 April 2005 08:58
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Thanks guys - I will look around.
I just took my AFM apart and found 7 pins inside the thing but only 6 pins in the loom plug.
Then I check the part numbers for the millionth time and I have the correct AFM for my car.
Is there a dummy AFM pin in these things ? Mine has one of two black wires plugged into it.......
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Location:
Lost in the K hole
Registered:
May 2002
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Re: Air Flow Meter Tech
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Thu, 14 April 2005 09:44
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it actually ISNT that simple... 
its not just a simple linear increase like youd expect with a potentiometer or something. its more like a recurring step function, and near bloody impossible to interfer with in any meaningful way
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Registered:
November 2002
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Re: Air Flow Meter Tech
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Thu, 14 April 2005 11:43
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Thanks Ed,
This is what I found out via Google and Autoshop 101.
I also checked why I had 7 pins in the AFM and only 6 in the loom plug, and that is normal for a GZE motor.
Back to the drawing board for the richness problem then !
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