P0107

Circuit Description
The Manifold Absolute Pressure sensor is a sensor that changes resistance based upon manifold vacuum. The PCM provides a 5 volt reference and ground. The MAP sensor signal varies between ground and 5 volts as manifold vacuum varies. As MAP decreases, voltage decreases, low engine load, high vacuum. As MAP increases, voltage increases, high engine load, low vacuum. The PCM uses the MAP sensor values as an indicator of engine load. A short to ground or open condition would cause the MAP sensor signal to go low, setting DTC P0107.

Conditions for Running the DTC
^ DTCs P0122 and P0123 not set.
^ Engine speed 700 RPM or less.
^ TP sensor 18 degrees or less.
OR
^ DTCs P0122 and P0123 not set.
^ Engine speed 1800 RPM or less.
^ TP sensor 13 degrees or greater.
^ Transaxle not in PARK or NEUTRAL.

Conditions for Setting the DTC
The MAP sensor reading has been 0.08 volts or less.

Action Taken When the DTC Sets
^ PCM disables long term fuel trim.
^ PCM uses a substitute MAP value based on engine RPM and throttle angle.
^ PCM uses 92.2 kPa for barometric pressure.
^ PCM disables Evaporative Emission (EVAP) control solenoid.
^ PCM disables torque management.
^ Transaxle shift adapts are maintained at current levels.
^ The PCM will illuminate the Malfunction Indicator Lamp (MIL) when the diagnostic runs and fails.
^ The PCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Freeze Frame and Failure Records.

Conditions for Clearing the MIL/DTC
^ The PCM will turn the MIL OFF after three consecutive drive trips that the diagnostic runs and does not fail.
^ A Last Test Failed (current) DTC will clear when the diagnostic runs and does not fail.
^ A History DTC will clear after forty consecutive warm-up cycles with no failures of any emission related diagnostic test.
^ Use a scan tool to clear DTCs.
^ Interrupting PCM battery voltage may or may not clear DTCs. This practice is not recommended.

Test Description
Number(s) below refer to the step number(s) on the Diagnostic Table.
2. If MAP sensor or circuitry are open, the MAP sensor parameter will read 10-16 kPa. If fault is not present monitor the scan tool display for this sensor while manipulating the vehicle's electrical harness. A change in sensor output while manipulating the harness may indicate a circuit fault.
3. Checking if circuitry from sensor to PCM is able to respond to a 5 volt signal on MAP input. A reading of 103-105 means wiring and PCM are OK.
17. Disconnect the suspect sensor and re-measure the resistance between the 5 volt reference and sensor ground circuits. If infinite resistance is measured the sensor is shorted.