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Pressure (MDP) Sensor

To bench test pressure sensor, see appropriate MAP SENSOR OUTPUT VOLTAGE (OFF-VEHICLE) table. If voltage is not within specification, replace MAP sensor.
If scan tool reading is not within specification, see DTC P1408 in appropriate BASIC TESTING article. Since many computer-controlled and monitored components set a Diagnostic Trouble Code (DTC) if they malfunction, also perform procedures in the appropriate TESTS W/CODES article.

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

MAP SENSOR OUTPUT VOLTAGE (OFF-VEHICLE)

Vacuum (In. Hg)

⁽¹⁾⁽²⁾ Output Voltage

8

2.4-4.4

10

2.1-4.1

12

1.9-3.9

14

1.6-3.6

16

1.3-3.3

⁽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.