Wiring a 5 pin MAF

[downside190]

How do you do this on the v2.2 board? I've worked out what wire is what on the sensor and made up the circuit in http://www.msextra.com/doc/ms1extra/MS_ ... al.htm#maf but this only gives me 2 extra outputs? The sensor has the following wires

Pin 1 - air temp sensor
Pin 2 - 12v live
Pin 3 - ground
Pin 4 - 5v ref
Pin 5 - maf signal

So air temp goes to pin 21
12v live goes to live
ground to ground
5v ref goes to 5v output on on x7

where do I connect the MAF signal wire too? This is the part thats got me stumped as I can't find anything through searching.

[Matt Cramer]

The MAF signal wire goes to whatever pin you wired to X7.

[downside190]

The MAF signal wire goes to whatever pin you wired to X7.

According to the diagram the 5v ref should go to x7? do I join the 2 wires together?

[Matt Cramer]

X7 is for the MAF signal and you should wire it to an unused pin on the DB37, then wire that pin to the MAF.

[downside190]

X7 is for the MAF signal and you should wire it to an unused pin on the DB37, then wire that pin to the MAF.

So what do I do with the 5v ref wire?

[Matt Cramer]

That's pin 26.

[downside190]

That's pin 26.

Thanks i'll test this tomorrow, I thought pin 26 was for the TPS only so guess I need to tap into that for the MAF as well.

[Matt Cramer]

It's for anything that needs 5 volts; on a typical (speed density) install, that's just the TPS.

[PDX5]

Does the MAF ground go to MS signal ground OR engine ground?

(MS2extra question, but I'm assuming the answer will be the same)

[Matt Cramer]

Does the MAF ground go to MS signal ground OR engine ground?

(MS2extra question, but I'm assuming the answer will be the same)

MS signal ground.