Nissan Mass Air Flow Wiring Diagrams
Here you can find out how to hook up other Nissan OEM Airflow Meters for you Nissan Engine
I can’t take credit for ANY of this info, Ive simply managed it all into one spot through trawling various forums and the web
RESPECT to the guys around the world in the Nissan Community that have helped to make all this available
Cheers
Thursday, 12 November 2009
Nissan Mass Air Flow Meter Wiring Diagrams
NISSAN AIRFLOW METER DIAGRAMS
KEY:
Airflow Meter Found on Vehicle Label
Wire colour vs Function
Size
Notes
CA18 AFM
Nissan Silvia S13
Pin A - nothing / not needed
Pin B - +12v power
Pin C - ground
Pin D - air flow signal out
65mm
SR20 AFM
Nissan S14/200SX
Pin A - nothing / not needed
Pin B - +12v power
Pin C - ground
Pin D - air flow signal out
65mm
RB20 AFM
Nissan Skyline R32
Wire A - Not Connected
Wire B - Signal
Wire C - 12v Ground
Wire D - Signal Ground
Wire E - 12v Power
80mm
Same size and calabration as Rb25 AFM
RB25 AFM Series 1
Nissan Skyline R33 Series 1
Wire A - Not Connected
Wire B - Signal
Wire C - 12v Ground
Wire D - Signal Ground
Wire E - 12v Power
80mm
Can be used on RB26 in twin form as an upgrade from the standard AFM's (ECU Change required)
RB25 AFM Series 2
Nissan Skyline R33 Series 2
White with Blue Trace - Ground
Orange with Black Trace- Signal
Black with White Trace - 12v Power
80mm
Same size and calabration as Rb25 AFM
RB26 AFM
Nissan Skyline GTR Twin Turbo
?????????
65mm
Label is same colour as Z32. This is the smallest unit which is 65mm opening diameter. Is it very obvious which AFM is a Z32 and which is an RB26 from the phyiscal size, despite same colour label. The part no is A36-000 J70
RB26 NISMO AFM
Nissan Skyline GTR Twin Turbo
?????????
65mm
This AFM has the resolution of the Z32 but has the same size as the stock, so you can keep the same piping, air intake and tubing as stock. The part no is A36-000 J71.
Z32 AFM
Nissan 300zx Twin Turbo
Wire 1 - Not Connected
Wire 2 - Signal
Wire 3 - 12v Ground
Wire 4 - Signal Ground
Wire 5 - 12v Power
Wire 6 Not Connected
80mm
Same size as RB20/RB25 but has higher calibration. Should be good for around 350rwkw. Perfect swap into Rb20/Rb25 as bolt pattern is identical and no change is required. RB30 AFM plug fits which can be had very cheaply from any nissan/holden wrecker
Q45 AFM
Nissan Infiniti Q45 V8
Wire 1 (White) - Signal
Wire 2 (Black) - Ground
Wire 3 (White & Black --have seen red and black--) - 12v Power
90mm
Higher calibration and larger diameter airflow meter. Has been known to go up to 450rwkw. The physical body of the unit is larger and it wont fit standard pod filter adapters or airboxes. It is just over 3.5" in diameter on the outside. The inside diameter is 3".