Suzuki 2000 Grand Vitara SQ416, Руководство по обслуживанию

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YH4
GRAND
VITARA
ENGINE AND EMISSION CONTROL SYSTEM (G16 / J20 ENGINE) 6E1-41
1
1. O-ring
1. MAP sensor
2. 1.5 V battery
(4.5 – 5.5 V in total)
3. Vacuum pump
MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR
Removal
1) Disconnect negative cable at battery.
2) Disconnect connector from MAP sensor.
3) Remove MAP sensor from intake manifold.
Inspection
1) Check vacuum passage on intake manifold, and vacuum pas-
sage for clog. Clean if clogged.
CAUTION:
Do not put wires into air vent hole for cleaning.
It causes damage in sensor.
2) Check sensor O-ring for damage and deterioration.
Replace as necessary.
3) Arrange 3 new 1.5 V batteries in series and connect its positive
terminal to “Vin” terminal of coupler 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.
CAUTION:
As connection to wrong terminal will cause damage to
MAP sensor, make absolutely sure to connect properly
as shown in left figure.
Output voltage (When sensor 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
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
If check result is not satisfactory, replace MAP sensor.
4) Install MAP sensor securely.
5) Connect MAP sensor coupler securely.