Mitsubishi Eclipse Workshop Manual page 173

FUEL
-
On-vehicle Inspection
of
MPI Components
13-105
Terminal
No.
Check item Check
condition (Engine
state)
Standard
value
Remarks
r03
Backup power
supply
lgnition switch:
OFF System
voltage
102
Poner supply
lgnition sa/tch:
ON
System
voltage
107
110 lgnition switch-lG
lgnition
switch:
ON System
voltage
r3
Fuel
pump drive
signal
Engine: Cranking
8V
or
higher
Engine: ldling
System
voltage
63 Control
relay
(Ponrer supply)
lgnition sryitch:
OFF
System
wltage
lgnition switch:
ON
o-3v
56 Control
relay
(Fuel pump)
lgnition sruitch:
ON
System
voltage
Engine: ldling
0-3v
PWUE9010
t
o
INSPECTION OF ENGINE CONTROL UNIT TER.
MINAL
VOLTAGE
(1
)
Connect the extremely fine probe (test harness: M8991
223
or paper clip, etc.)
to the probe
of
the voltmeter.
(21
At
each terminal
of
the
engine
control unit
connector.
insert
the
extremely
fine probe
from the wire
side,
and
measure
the voltage referring to the check
chart.
NOTE
o
ln the
state
in
which the connector
of
the
engine
control unit is
connected. measure the voltage.
o
Measure
the
voltage across each terminal
to
the
terminal No.
106
(earth terminal).
.
You may
find
it
convenient
to pull out the
engine
control unit
to
make
it
easier
to
reach
the
connector
terminals.
o
Inspection need not be executed in the chart's sequence.
Caution
Short-circuiting
the positive
(+l
probe betn'oen
r
oon-
nector terminal and earth could damage
the
vehicle
wiring, the
sensor,
the
engine control unG or all
thers.
Use care
to
prcnent ürisl
(3)
lf
voltmeter shows any deviation from
standard
value.
check
the
corresponding sensor, actuator
and
related
electrical wiring, then repair or
replace.
(4) After repair
or
replacement, recheck
with the
voltmeter to
confirm that the repair has corrected the
problem.
Terminal voltage check chart
Terminal arrangement
of engine control unit connector
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