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VQ25DET MAF replaced, still 0.0 on OBD

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Engine is running poorly, and OBD said that the signal from the MAF was 0.0. I replaced the MAF insert (22680-6N21A), and its still 0.0. Inlet temp sensor works with old and new insert. So either the problem is;

1. ODB misreporting MAF signal, and there's some other issue that doesn't trigger a CEL

2. new MAF is dead

3. wiring issue

I'm starting with looking at #3.There's 5 pins on the connector to the MAF. I've measured resistance to ground with ignition off, and then voltage with ignition on.

Pin - resistance - volts w/ Ign on

1  - infinite - 5

2 - 111       - 12

3  -  0         -  0

4  - infinite   -  5

5  - infinite   - 0

Does anyone know the MAF pinout?

Where is the ECU? I've got an ECU pinout from here, so i could check the MAF to ECU wiring.


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Hey mate, still got this issue? Happy to swing past to check my MAF, i know it works!! (For Now...) 

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