Manifold Absolute Pressure sensor

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GM MAP Sensor

MAP: Outputs a variable voltage, from a 5v reference, based on the pressure in the intake manifold.


Facing the connector on the harness, with the clip facing up, the pin on the left is A, the pin in the middle is B, and the one on the right is C.

  • (A) - BLACK - 5v Return
  • (B) - LIGHT GREEN - MAP signal to PCM
  • (C) - GRAY - 5V battery