Daihatsu F300 Service Manual page 1431

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•
•
•
(3) Connect the following SST between the ECU and the
engine wire.
SST: 09842-87204-000
NOTE:
• Before the
SST
is installed,
be
sure to perform continuity
and short tests between the SST terminals.
(4) Reconnect the ground cable terminal to the negative
(-) terminal of the battery.
2. Check of output of pressure sensor
(1) Measure the voltage between the SST terminals@ and
@ when the ignition switch is turned ON.
Specified Value
Measuring
point
Atmospheric
Altitude (height above sea
pressure Voltage V
level) m
kPa(mmHg)
0 101.3 (760) 3.2-4.0
500
95.5
(716) 3.1-3.8
1000
89.9
(674)
3.0-3.6
If the measured voltage does not conform to the specifica-
tion, measure the voltage between the SST terminals@ and
®.
Ensure that the measured voltage is within a range of
4.5 to 5.5 volts. Then, proceed to replace the pressure
sensor.
When the pressure sensor is replaced, it is necessary to
replace the gas filter, too.
If the measured voltage between the SST terminals
@
and
@ does not conform to the specification, check the wiring
between the ECU and the pressure sensor. If there is no
trouble
with
the wiring, check the
ECU.
(2) Disconnect the rubber hose connected to the pressure
sensor. Apply a negative pressure of 26.7 kPa (200
mmHg) to the pressure sensor, using a MityVac. Check
that the measured voltage between the SST terminals
@ and @ drops by 0.65 - 0.95. compared with the
voltage measured in the step (1) .
EF--63
EFISYSTEM