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Manifold Absolute Pressure (MAP) Sensor Inspection

  1. Disconnect connector from MAP sensor.
  2. Remove MAP sensor.
  3. Arrange 3 new 1.5 V batteries (2) in series (check that total voltage is 4.5 - 5.0 V) and connect its positive terminal to "Vin" terminal of sensor and negative terminal to "Ground" terminal. Then check voltage between "Vout" and "Ground".

    Also, check if voltage reduces when vacuum is applied up to 400 mmHg by using vacuum pump (3). If check result is not satisfactory, replace MAP sensor (1).

    Output voltage (When input voltage is 4.5 -5.5 V, ambient temp. 20 - 30°C, 68 - 86°F) 

    BAROMETRIC PRESSURE AND OUTPUT VOLTAGE SPECIFICATION

    Altitude (Reference) Barometric pressure Output voltage>
    (ft) (m) (mmHg) (kPa) (V)
    0 - 2000  0-610  760 - 707  100-94 3.3-4.3 
    2001-5000  611-1524  Under 707 over 634  94-85  3.0-4.1 
    5001-8000  1525-2438  Under 634 over 567  85-76  2.7-3.7 
    8001-10000  2439-3048  Under 567 over 526  76-70  2.5-3.3 
  4. Install MAP sensor (1) securely.
  5. Connect MAP sensor (1) connector securely.
Fig 1: Checking Voltage Between Vin Terminal And Ground Terminal Of Sensor
G04013908Courtesy of SUZUKI OF AMERICA CORP.
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