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df1: Connecting MAP/BP Tester
Steps _Key Off
_Disconnect the MAP/BP sensor from the vehicle harness
_Connect the MAP/BP tester between the vehicle harness and the MAP/BP sensor
_Insert tester banana plugs into DVOM
_Set DVOM to 20 volt scale
Direction GO to Continue

BP Information:
ComponentBarometric Absolute Pressure Sensor
DescriptionThe BP sensor measures barometric pressure using a frequency. This gives the EEC information on engine load. The BP is used as a barometric pressure sensor for altitude compensation, updating the EEC during Key On Engine Off and every wide-open throttle.

The EEC uses the BP information for:
Spark advance
EGR flow
Air/Fuel ratio
LocationMounted behind Integrated Relay Controller; in front of passenger strut tower.
Wire ColorsOrange with White stripe
Light Green with Black stripe
Black with White stripe
NotesWhile the BP has a port typical of a MAP sensor, this port is NOT hooked to any vacuum source, and simply is a atmosphere vent.