Manifold Absolute Pressure (Map)/Manifold Differential Pressure (MDP) Sensor

To test MAP sensor on vehicle, turn ignition on. Connect scan tool to Data Link Connector (DLC). Connect a hand-held vacuum pump to MAP sensor. Observe scan tool display as specified vacuum is applied. See MAP SENSOR OUTPUT SIGNAL (ON-VEHICLE) table.
If scan tool reading is not within specification, see DTC P0106, P0107 and P0108 in TESTS W/CODES article. To bench test pressure sensor, see MAP SENSOR OUTPUT VOLTAGE (OFF-VEHICLE) table. If voltage is not within specification, replace MAP sensor.

CAUTION: Damage to MAP sensor will occur if connections are made incorrectly.

MAP SENSOR OUTPUT SIGNAL (ON-VEHICLE) ⁽¹⁾

Vacuum (In. Hg)

Scan Tool Display (kPa)

100

⁽¹⁾	With scan tool installed, ignition on, and specified vacuum applied to MAP sensor.

MAP SENSOR OUTPUT VOLTAGE (OFF-VEHICLE)

Altitude (Feet)

Vacuum (In. Hg)

⁽¹⁾⁽²⁾ Output Voltage

0-2000

28-30

3.1-3.6

2001-5000

25-28

2.8-3.4

5001-8000

22-25

2.6-3.1

8001-10,000

20-22

2.4-2.9

⁽¹⁾	MAP sensor output voltage is tested with three 1.5-volt batteries connected in series (output 4.5-5.0 volts). Positive lead of batteries is connected to "Vin" terminal. Negative lead of batteries is connected to "Ground" terminal. Check output voltage between "Vout" and "Ground" terminals.

⁽²⁾	Voltage should reduce when up to 15 in. Hg of vacuum is applied to MAP sensor.