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.
MAP sensor output voltage (Vin voltage 4.5 – 5.5 V, ambi-
ent temp. 20 – 30°C (68 – 86°F))
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.
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
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