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DTC 106 MAP/Low/High/Short/Open
Conditions for Setting the DTC
Key ON, engine RPM equals zero
MAP reading less than 50 kPa absolute or greater than 108 kPa absolute
MAP sensor signal voltage greater than 4.923 volts.
MAP sensor signal voltage less than 0.122 volts.
On successful engine start-up MAP value does not drop at least 9 kPa from Key ON engine off val-
ue.
Circuit Description
The Manifold Absolute Pressure sensor is a piezoelectric pressure sensor fitted to the manifold to measure
the pressure internal to the manifold. It is combined in one sensor with the manifold air temperature sensor
and referred to as the TMAP sensor. The MAP reading is used to determine the load and state of the en-
gine. Because the sensor measures absolute pressure, with the Key ON, engine off, the reading should be
atmospheric pressure, displayed as kPa (approximately 100 kPa at sea level). The sensor operates on 5
volts and sends a signal voltage on the output circuit to the ECU. The ECU uses the signal to determine
correct fueling. Voltage varies from a low voltage when the MAP is low (below atmospheric) to high when
the MAP is close to or at atmospheric pressure. If there is a failure in the 5 volt reference to the TMAP sen-
sor, a code will be set. Depending on the 5 volt failure mode, the system may go to the Limp Home mode.
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