Circuit Description

Powertrain Control Module (PCM) and Alternative Fuel Engine Control Unit (AFECU) both supply a 5-volt reference, signal and ground circuit to Manifold Absolute Pressure (MAP) sensor. As manifold pressure changes, monitored MAP sensor signal voltage changes. PCM and AFECU compare detected sensor voltage changes to a predetermined value which coincides with a change in TP sensor value. If expected MAP value is not detected and does not coincide with change in TP sensor value, DTC P0106 will set.

For duplication of DTC, ensure engine is running on alternative fuel, no AFECU DTCs are set (with the exception of DTCs P1215, P1432 and P1433), and TP sensor angle is less than 70 percent.