P1107

Diagnostic Chart:

Wiring Diagram:

Altitude V. Voltage Range Chart:

The manifold absolute pressure (MAP) sensor is a variable resistor that responds to changes in manifold pressure (vacuum). The PCM measures the voltage drop across the MAP sensor. The voltage ranges from 1-1.5 volts at idle (high vacuum) to 4-4.5 volts at wide-open throttle (low vacuum).

DTC PARAMETERS

DTC P0107 or P1107 will set if MAP is less than 0.30 volts when either:

1. Engine speed is less than 1000 rpm.
2. No TP sensor DTCs have been set.

OR

1. Engine speed is greater than 1000 rpm.
2. TP sensor is greater than 10 percent.
3. No TP sensor DTCs have been set.

P1107 will set if an intermittent low condition is detected. The time to set either P0107 or P1107 depends on engine RPM.

NOTE: MAP signal is continuously checked when engine is running.


DIAGNOSTIC AIDS

When attempting to diagnose an intermittent problem use the Scan tool to review malfunction history diagnostic information. This supplemental data can be used to duplicate a problem.

Intermittents or opens suspected to be at the connector can be detected by using diagnostic service probe. Voltage can be read on both wires without disconnecting any connectors.

With the engine Off and key On the map reading should be the same as the barometric reading because manifold pressure is equal to atmospheric pressure (no vacuum - high voltage). Comparing this reading to a known good vehicle with the same sensor is a good way to check accuracy of a suspect sensor. Readings should be within 0.4 volts.