Mitsubishi Eclipse Workshop Manual page 128

13-64
FUEL
-
On-vehicle Inspection
of
MPI Components
IDLE POSITION
SWITCH
Engine control
unil
@ ldle
position
sruitch terminal
ldle position
sntitch
6Fut356
Engine control unit connector
Throttle shaft turning
angle
612ss2
OPERATION
.
The idle position switch senses whether
the
accelerator pedal is
depressed
or
not. converts
it
into
high/low voltage and inputs the voltage
to the
engine
control unit, which then controls the idle
speed
control servo
based
on the input
signal.
.
The battery voltage in the engine control unit is applied
to the
idle position switch through a
resistor.
When the accelerator pedal is released, the idle position switch is turned on to
conduct the voltage to
earth. This causes
the idle position switch terminal voltage
to go
low from
high.
TRoUBLESHOOflNG
HrNrS
c
lf the idle position switch harness and individual part check results are normal but the idle position snritch
^
output is äbnormal, the following troubles are
suspected.
O
TROUBLESHOOTING
output is abnormal, the following troubles
are
(1)
Poorly adjusted accelerator cable
(2)
Poorly adjusted
idle position switch (fixed
SAS)
INSPECNON
Using Muhi-use Tester
ruUn
ffiffiffi
@
Mitsublshi Motots
Co?potatlon
Apr.l99t PWlrE9olo