Circuit/System Verification
- Start the engine, observe the MAP Sensor parameter. The reading should be between 32-42 kPa.
- Ignition ON, engine OFF, compare the MAP sensor pressure parameter to the pressure parameter of a known good vehicle. The reading should be within 3 kPa of the known good vehicle.
- Ignition ON, engine OFF, compare the MAP sensor pressure parameter to the reading in the . The MAP sensor pressure parameter should be within the specified range indicated on the table.
- Start the engine, the MAP sensor pressure parameter should change while starting the engine.
- Engine running, snap the throttle while observing the MAP sensor pressure parameter on the scan tool. The MAP sensor pressure parameter should change rapidly when the throttle position changes.
IMPORTANT:
The vehicle used for the comparison is not limited to the same type of vehicle being serviced. A vehicle known to provide an accurate reading is acceptable.
IMPORTANT:
The Altitude vs Barometric Pressure table indicates a pressure range for a given altitude under normal weather conditions. Weather conditions consisting of very low or very high pressure and/or very low or very high temperature may cause a reading to be slightly out of range.