Circuit Description

Powertrain Control Module (PCM) supplies a 5-volt reference signal and a ground circuit to Manifold Absolute Pressure (MAP) sensor. As manifold pressure changes, MAP sensor signal voltage changes. MAP sensor signal voltage should be 1.0-1.5 volts at idle and 4.5-4.8 volts at Wide Open Throttle (WOT).

Conditions required to set DTC:

• Idle speed dose not vary more than 150 RPM.
• IAC dose not vary more than 10 counts.
• TP sensor dos not vary more than one percent.
• EGR is stable.
• DTC P0107 and/or P0108 are not present.
• MAP voltage change is greater than .33 volts (6.3 kPa).