2000 Sunbird L4-121 2.0L VIN B 2-bbl (1984)
Manifold Pressure/Vacuum Sensor: Testing and Inspection
Fig. 105 - Wiring Diagram for Chart C-1D MAP Output Check. VIN P, VIN Z
CHART C-1D, MAP OUTPUT CHECK
The Manifold Absolute Pressure sensor (MAP) measures manifold pressure (vacuum) and sends that signal to the ECM. The ECM uses this
information for fuel and spark control.