1C
Manifold Absolute Pressure (MAP) Sensor Inspection
1) Disconnect connector from MAP sensor (1).
2) Remove MAP sensor (1).
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)
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 securely.
5) Connect MAP sensor connector securely.