Suzuki GRAND VITARA XL-7 Owner's Manual page 373

6E2-40 ENGINE AND EMISSION CONTROL SYSTEM (SEQUENTIAL MULTIPORT FUEL INJECTION FOR H27 ENGINE)
INSPECTION
1) Check sensor O-ring (1) for damage and deterioration.
Replace as necessary.
2) Arrange 3 new 1.5 V batteries (2) in series and connect its
positive terminal to "Vin" terminal of MAP sensor (1) and
negative terminal to "Ground" terminal. Then check voltage
between "Vout" and "Ground".
Also, check if voltage reduces when vacuum is slowly
applied up to 400 mmHg by using vacuum pump (3).
If check result is not satisfactory, replace manifold absolute
pressure sensor.
CAUTION:
As connection to wrong terminal will cause damage to
manifold absolute pressure sensor, make absolutely sure
to connect properly as shown in the figure.
MAP sensor output voltage (Vin voltage 4.5 – 5.5 V, ambi-
ent temp. 20 – 30°C (68 – 86°F))
ALTITUDE
(Reference)
(ft) (m)
0 0
– –
2000 610
2001 611
– –
5000 1524
5001 1525
– –
8000 2438
8001 2439
– –
10000 3048
BAROMETRIC
PRESSURE
(mmHg) (kPa)
760
– 100 – 94
707
Under 707
94 – 85
over 634
Under 634
85 – 76
over 567
Under 567
76 – 70
over 526
OUTPUT
VOLTAGE
(V)
3.3 – 4.3
3.0 – 4.1
2.7 – 3.7
2.5 – 3.3