Fleetwood V8-350 5.7L VIN P MFI (1995)
Manifold Pressure/Vacuum Sensor: Testing and Inspection
SCAN TOOL DIAGNOSIS
The Tech 1 scan tool (or equivalent) displays Manifold Absolute Pressure (MAP) and will display volts and kPa of pressure. Key "ON," engine
stopped (no vacuum), MAP will display high voltage or pressure, while at idle (high vacuum), MAP will display low voltage or pressure. Likewise,
on acceleration MAP will display high and on deceleration will display low voltage.
DIAGNOSTIC CHARTS
Diagnostic Trouble Codes (DTCs)
Problems encountered with this circuit should set either a Code 33 MAP Sensor Circuit (Signal Voltage High). See: Computers and Control
Systems/Testing and Inspection/Diagnostic Trouble Code Tests and Associated Procedures/Manufacturer Code Charts/DTC 33/Powertrain Controls
- ECM/PCM
OR
Code 34 MAP Sensor Circuit (Signal Voltage Low). See: Computers and Control Systems/Testing and Inspection/Diagnostic Trouble Code Tests
and Associated Procedures/Manufacturer Code Charts/DTC 34/Powertrain Controls - ECM/PCM
