6E3-42
ENGINE AND EMISSION CONTROL SYSTEM (RHZ ENGINE)
INTAKE AIR PRESSURE SENSOR (MANIFOLD
ABSOLUTE PRESSURE SENSOR)
REMOVAL
1) Disconnect negative cable at battery.
2) Disconnect connector from intake air pressure sensor (1).
3) Remove intake air pressure sensor from strut tower bar.
INSPECTION
1) Arrange 3 new 1.5 V batteries (2) in series and connect its posi-
tive 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 (3).
CAUTION:
As connection to wrong terminal will cause damage to in-
take air pressure sensor, make absolutely sure to con-
nect 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
BAROMETRIC
OUTPUT
(Reference)
PRESSURE
VOLTAGE
(ft)
(m)
(mmHg)
(kPa)
(V)
0
|
0
|
760
|
100
|
1 9
2 7
|
2 000
|
610
|
707
|
94
1.9 – 2.7
2 001
|
611
|
Under 707
94
|
1 8
2 6
|
5 000
|
1 524
over 634
|
85
1.8 – 2.6
5 001
|
1 525
|
Under 634
85
|
1 7
2 4
|
8 000
|
2 438
over 567
|
76
1.7 – 2.4
8 001
|
2 439
|
Under 567
76
|
1 6 – 2 3
|
10 000
|
3 048
over 526
|
70
1.6 – 2.3
If check result is not satisfactory, replace intake air pressure sen-
sor (1).
INSTALLATION
CAUTION:
Before installing intake air pressure sensor hose, degrease
connect part of hose and intercooler outlet hose. Otherwise
hose may become detached and cause turbo system failure.
1) Install intake air pressure sensor (1) to strut tower bar.
2) Connect connector and hose to intake air pressure sensor se-
curely.
3) Connect negative cable at battery.
