Mitsubishi Eclipse Workshop Manual page 87

FUEL
-
Troubleshooting
13-23
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5.
CHECKING THE AUTO.CRUISE CONTROL
VACUUM
PUMP
lgnition
switch
(lGr)
Description of
operation
Hold
mode
When the
SET switch is turne(
ON by the
driver rurning the
CRUISE switch
ON when
a detärmineä
speeO
is
reachedl
the
control unit receives a set
signal.
and tirrns tne auto*ruiiä
vacuum pump motor
ON.
After
the constant
speed is reached.
the motor. control
valve and release valve are räpeatedty
tum-eä
ON and
OFF according to
driving
conditions.
Acceleration mode
When the
RESUME switch
is
pressed.
the controlunit
receives
a RESUME signal
and it not
only tums the
aute,cruise vacuum
pump motor ON but
also
tums the
control valve and
release
valve ON
(valve
is
closed).
Deceleration mode
When the
SET
switch is
held down. the control unit
receives
a
set
signal and
it
not
only tums the auto-cruise vacuum pump
motor
and
control
valve
OFF (valve is
openedf but also
turns thä
release valve ON
{valve
is
closed}.
Belease mode
When
the
CRUISE
switch
is
turned OFF. the control
unit
receives a
cancel signal and
it
not only turns the autocruise
vacuum pump
motor
OFF
but
also turns the control valve
and
release valve OFF (valve is
opened).
Troubleshooting hint
Diagnosis-No.11 (automatically cancelledl
ECU
terminal voltage
Terminal
No.
Signal Mode/Terminal roltagre
M
Hold Accel-
eration
Decel-
elatbn
Release
26
Auto{ruise
vacuum pump
drive
System
voltage
or
0
0.
System
voltage
System
voltage
13
Control
valve
open/close
0
System
voltage
System
wltage
12 Release valve
open/close
0 0
System
vohage
Auto-
cruise
control
s-witch
Stop
lamp
s,witch 9
Auto
cruise
control
vacuum
pump
Auto-
cruise
control
unit
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ütAo367
qi
Ali
lll
(11)
@
Mitsubishi
Motors
Corporrtion
Apr.
l99l
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