Sunfire L4-138 2.3L DOHC VIN D MFI (1995)
Manifold Absolute Pressure (MAP) Sensor: Testing and Inspection
SCAN TOOL TESTING
A scan tool displays manifold pressure in kPa and MAP sensor signal voltage. Low pressure (high vacuum) displays a low voltage while a high
pressure (low vacuum) displays a high voltage. A failure in the MAP sensor circuit should set a DTC P0107 or P0108 and using the applicable
chart will lead to the cause of the problem. A DTC P0108 may be set it misfire or a rough or unstable idle exists. A DTC P0106 will set for a MAP
sensor that intermittently sends a zero voltage signal to the PCM. Chart C-1D Manifold Absolute Pressure (MAP) Output Check can also be
used to check the MAP sensor. See: Testing and Inspection
