P0106

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 P0106 will set if MAP reading changes by more than 0.14 volts (13 kPa) when:
^ Throttle position not changing.
^ Engine speed change is less than 100 RPM.
^ Steady EGR command.
^ IAC change is less than 10 counts.
^ No EGR, TPS, IAC DTCs have been set.

NOTE: MAP signal is continuously checked when engine is running and the above conditions have been met.


TEST PROCEDURE

If all connections to MAP sensor are clean and tight this DTC is most likely due to a faulty sensor.

DIAGNOSTIC AIDS

When attempting to diagnose an intermittent problem use the Scan tool to review malfunction history diagnostic information. The 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 wires without disconnecting any connectors.

Check the tightness of the female terminal grip with a spare male terminal.

With engine Off and key On the map reading should be the same as barometric 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 verify accuracy of a suspect sensor. Readings should be within 0.4 volts.