Beretta V6-3100 3.1L VIN M SFI (1995)
Manifold Pressure/Vacuum Sensor: Testing and Inspection
Manifold Absolute Pressure (MAP) Sensor Service
DIAGNOSIS
A Tech 1 scan tool displays manifold pressure in volts. Low pressure high vacuum) displays a low voltage while a high pressure (low vacuum)
displays a high voltage. A failure in the Manifold Absolute Pressure (MAP) sensor circuit should set a Diagnostic Trouble Code (DTC) 33 or 34
and using the chart will find the cause of the problem. A DTC 33 may be set if a rough or unstable idle exists. CHART C-1D MAP Output
Check can also be used to check MAP sensor output. Under Computers And Controls Systems/System Diagnosis/Procedures/Diagnostic
Charts/C Charts>. See: Computers and Control Systems/Testing and Inspection/Diagnostic Trouble Code Tests and Associated
Procedures/Related Tests and Information/C Charts/Chart C-1D Manifold Absolute Pressure (MAP) Output Check
