Four wire MAP sensor

[Janekom]

Asking for a friend - have you ever this four wire MAP sensor please?

 

[mburch]

I know I've seen this unit, but the manufacturer name is currently eluding me. Can you tell us what it's connected to?

 

[bjdecker]

It looks kinda like the old Delphi/ACDelco three wire unit that we all know and love...I'm guessing that the 4th wire (green) is IAT -- won't know for certain until you chase it down.

Red - Supply/Reference voltage +5v
Black - Ground
White - MAP signal (3 bar or 4 bar)
Green - Intake Air Temp.


Edit: IE VMPSND and wiring. Red - Supply, White & Green - Gauge, Black - Ground.

 

[Janekom]

It is a MAP (Manifold Pressure Sensor) and is connected to an old style Vans Manifold Pressure gauge. The old gauge with the needle.