Suzuki Engine 2002 GRAND VITARA SQ625, Service Manual

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ENGINE AND EMISSION CONTROL SYSTEM (H25 ENGINE) 6E2-43
Manifold absolute pressure sensor
INSPECTION
1) Disconnect coupler 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).
MAP sensor output voltage (Vin voltage 4.5 – 5.5 V, ambi-
ent temp. 20 – 30°C, 68 – 86°F)
4) Install MAP sensor (1) securely.
5) Connect MAP sensor (1) coupler securely.
Crankshaft position sensor
REMOVAL/INSTALLATION
Refer to “Timing Chain Cover” in Section 6A2.
INSPECTION
Refer to “DTC P0335 Diag. Flow Table” in Section 6-1.
ALTITUDE (Reference)
BAROMETRIC
PRESSURE
OUTPUT
VOLTAGE
(ft) (m) (mmHg) (kPa) (V)
0
|
2 000
0
|
610
760
|
707
100
|
94
3.3 – 4.3
2 001
|
5 000
611
|
1 524
Under 707
over 634
94
|
85
3.0 – 4.1
5 001
|
8 000
1 525
|
2 438
Under 634
over 567
85
|
76
2.7 – 3.7
8 001
|
10 000
2 439
|
3 048
Under 567
over 526
76
|
70
2.5 – 3.3