P1106

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 P0108 or P1106 will set if MAP is greater than 4.9 volts or (90kpa) when either:

1. Engine speed is greater than 1600 rpm.

2. TP sensor is less than 70 percent.

3. No TP sensor DTCs have been set.

OR

1. Engine speed is less than 1600 rpm.

2. TP sensor is less than 50 percent.

3. No TP sensor DTCs have been set.

P1106 will set if an intermittent high voltage condition is detected. The time to set P0108 or P1106 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.