Mitsubishi Eclipse Workshop Manual page 115

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3
--
FUEL
-
On-vehicle Inspection
of
MPI
Components
13-51
o
o
INSPECTION
Using Multi-use Tester (MUTI
When the
vehicle is new [within initial operation of about
5OO
km
(3OO
miles)|, the air florv sensor output frequency may
be
about
10% higher.
o
o
O
o
Waveform inspection with
analyzer
7tut278
Analper
Standard
wavefom
Measuring method
(1
)
Disconnect the air flow sensor connector, and connect the
special
tool (test harness: MD998474)
across
the discon-
nected connector
parts.
(2)
Connect
the special patterns pick-up of the
analyzer
to the
terminal
@
of the air flow
sensor connector.
Observation conditions
Function
Item
No.
Data display
Check condition
Engine
state Standard value
Data reading
12
Sensor air
volume
(frequency)
o
Engine
coolant
temperature: 8O to
95oC
(176 to 203.F)
.
Lamps. electric cooling
fan.
accessory units:
All
OFF
.
Transmission: Neutral
r
Steering wtreel: Neutral
850 r/min.
(tdtel
20-46
2.000 r/min.
52-92
Racing Frequency
increases with
racing
NOTE
The time
(interval
T)
becomes
shorter
as
the intake
air
flolv
rate
increases.
Tr is
equal
to
Tz.
@
Mhsubiehi Mot6rs Corporation
Apr.
l99l
PWUE9010