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1G MAF to IAT and MAP sensors for speed density


mikus
weiterhin das Huhn f#$k
1994/2000


Galant VR-4 org Post #: 1004793 posted 07/12/11 01:24 PM     Remind Me!  Send Private Message   Edit Post      
A MAF connector to SD sensor cable is handy for plug & play sensor connection on ECMLink and I believe Jackal/DSMAP. These can be purchased premade for a decent price.

If you'd rather wire it yourself and save a few bucks, you might want to get a hold of someone on a board making 1G-2G-3G MAF adapter cables and arrange for a MAF connector to open wire you can then use. Here's a wiring index if you go this route. Credit to Jeff, VFAQ etc, I'm just compiling.

1G MAF pinout:
ECU?? 1G MAS Pin 1 green w/ yellow str idle position sw
ECU10 1G MAS Pin 2 green w/ blue str Airflow Hz
ECU102 1G MAS Pin 3 red +12V from MPI
ECU23 1G MAS Pin 4 green w/ red str +5 volts
XXXXX 1G MAS Pin 5 blank
ECU24 1G MAS Pin 6 green w/ black str Ground
ECU16 1G MAS Pin 7 green w/ yellow str Barometer
ECU08 1G MAS Pin 8 green w/ orange str IAT

typical SD sensor matches (assuming you use BARO for MAP sensor)]
IAT: use ECU08 and ECU24. Wires are interchangeable
MAP: use ECU23 for +5V (red), ECU16 for sensor output (blue), and ECU24 for ground (black)
----- if you have someone assemble the 1G MAF connector pigtail, see if they can run two wires off pin 6 since you need two ECU grounds for this setup.

1st gen MAFT pinout, handy if you want to hardwire it along with SD sensors to produce a base SD map off MAFT
pink = ECU102 12V
black = ECU24 ECUground <-- ground to frame instead
green = ECU10 Airflow Hz
brown = ECU08 IAT <-- use software to ignore at ECU, no need to cut
gray = ECU16 Baro <-- use software to ignore at ECU, no need to cut
white = RPM signal <-- this doesn't interface with MAF on a 1G, it's tapped off your CAS typically.


Edited by mikus (07/25/11 08:46 PM)

Posts: 2763 | From: Aurora IL | Member Since: 01/11/07 | IP: (198.178.234.30) | Report this post to a Moderator

OZRally
Junior Member
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Galant VR-4 org Post #: 1006523 posted 07/20/11 02:55 AM     Remind Me!  Send Private Message   Edit Post   
This is what I followed and it works great! I'm using a 3 bar GM Map.

Copied from DS-Map:

1) DISCONNECT BATTERY!


2) The MAF wiring we are interested in is MAF sensor pins 4, 6, 7, and 8.


(MAP)->(MAF Harness)


A->6 Ground........................................(green black)
B->7 Barometric pressure sensor........(green yellow)
C->4 5V power supply for sensors.......(green red)


3) IAT to pin 8 and pin 6. It is a resistor, so polarity does not matter.


(IAT)->(MAF Harness)


A->6 Ground.....................................(Black)
B->8 Intake air temp sensor............(Green Orange)


Edited by OZRally (07/20/11 02:56 AM)

Posts: 78 | From: Illinois | Member Since: 04/05/09 | IP: (69.47.175.192) | Report this post to a Moderator


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