Nistune Forums

Posted: **Tue Jul 15, 2008 5:02 pm**

Hi Matt/Guys....
Im wiring a Datsun 1200 wagon up with a CA18DET at the moment, and about to change the MAF to a RB20 one.

In the back of the Nistune document, is the pinouts for all the MAF's....are you sure these are correct?
for the RB20, it says pin B is Signal, and pin E is 12V power.

the MAF plug that came with the RB20 MAF has a shielded wire that you would assume is the signal wire in pin E, and a big fat yellow wire in pin B which you would assume would be the 12V power.
the other to wires C and D look like they should, 12V ground and signal ground.

any ideas?
I dont want to wire it wrong and fry the MAF or ECU

Posted: **Wed Jul 16, 2008 1:41 am**

could be wrong

wiring came from this site:
http://paulr33.skylinesaustralia.com/di ... iring.html

usually shielded wire is the signal wire as you mention

i have an RB20 AFM here but no wiring for it, so cant confirm unfortunately

Posted: **Thu Jul 17, 2008 7:26 pm**

cool.
anyone else?

Posted: **Thu Jul 24, 2008 9:10 am**

is anyone else able to give a hand here?
Im sure half of you would have wired up a RB20 MAF before?

Posted: **Thu Jul 24, 2008 11:16 am**

Let me check tonight if I can find the HCR32 factory service manual somewhere. that would definately have it

Posted: **Fri Jul 25, 2008 9:55 am**

just looked through a R33 manual, and it shows wiring as you described also.

maybe the plug he has isnt for a MAF? any other Nissan plugs that are the same type as the MAF plug?

Posted: **Fri Jul 25, 2008 7:42 pm**

for rb20/rb25 series 1 afm (4wire type) it should go

1 no connection
2 signal output (0-5v)
3 earth for supply voltage
4 earth for signal wire
5 +12v supply voltage

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RB20 MAF wiring

RB20 MAF wiring