Manifold Absolute Pressure Sensor
The MAP (Manifold Absolute Pressure) sensor provides a voltage proportional to the absolute pressure in the intake manifold using a piezo-resistive silicon sensing element. The pressure sensor is typically mounted into a port on the engine intake manifold.
In the 2014 MY, some vehicles will be using MAP sensor in place of a MAF sensor for airflow measurement. The MAP sensor is checked for opens, shorts, or out-of-range values by monitoring the analog-to-digital (A/D) input voltage.
MAP SENSOR TRANSFER FUNCTION
| Vout=(Vref / 5) * 0.0409523809* Pressure (in kPa) + -0.1095238095) | ||
| Volts | Pressure, kPa | Pressure, Inches Hg |
| 0.30 | 10.0 | 2.59 |
| 0.38 | 12.0 | 3.54 |
| 1.00 | 27.0 | 7.97 |
| 2.35 | 60.0 | 17.72 |
| 3.37 | 85.0 | 25.10 |
| 4.48 | 112.0 | 33.07 |
| 4.60 | 115.0 | 33.96 |
MAP SENSOR CHECK OPERATION
| DTCs | P0107 (low voltage), P0108 (high voltage) |
| Monitor Execution | Continuous |
| Monitor Sequence | None |
| Sensors OK | Not Applicable |
| Monitoring Duration | 5 seconds to register malfunction |
MAP ELECTRICAL CHECK ENTRY CONDITIONS
| Battery voltage > 11.0 volts |
TYPICAL MAP SENSOR CHECK MALFUNCTION THRESHOLDS
| Voltage < 0.19 volts or voltage > 4.88 volts |