Mitsubishi Eclipse Workshop Manual page 85

FUEL
-
Troubleshooting
13-21
o
o
CHECK CHART
1. CHECKING THE CONTROL UNIT POWER SUPPLY CIRCUIT
lgnition
swrtch
<lGr>
Description
of
operation
When the auto-cruise control
switch
(CRUISEI
is
switched
ON
while the ignition switch is
O\.
current flows to the
ignition
switch (lGr). to fuse No.(l1) of
the
junction
block
and
to
the
auto-cruise control switch
(MAIN
switchl. the control
unit
and
to
earth.
When the ignition switch
is
turned
OFF,
the MAIN sruitch in the
auto-cruise control switch
is
also turned
OFF.
Troubleshooting hint
EGU
terminal voltage
NOTE
*:
The connector Nos.
in
Section
"AUTO-CRUISE CONTROL
RELATED HARNESSES" and
the
connector names
in the
junction block
are
represented.
(Applicable on the next page
and
subsequence.)
o
O
Auto-
cruise
control
switch
ffiffi
E*
2.
CHECKING THE SET SWITCH
Autocruise
control
unit
Auto-
cruise
control
switch
o
o
Description
of
operation
When
the
SET
switch
is
srruitched
ON
(at
ths \€hicle
speGd
desired
to
be maintained, and
with th€
CRUTSE
switch of thc
auto-cruise
control
sryhches ON)
that
r,ehicle sBeed
is
main-
tained
as
a constant
speed.
Furthermore,
the
constant speed
is
gradually
reduced
(tho
"coasting" leaturel when the
SET
switch
is
pressed
and
heldi
while the vehicle is
traveling
at the previously
set
constant
speed, and,
when the
SET
switch
is released.
the vehicle then
maintains
that newly set
constant speed (the speed at which
the
SET
switch was
released).
Current flows to the control
unit. the auto-cruis€ control
sl,vitch
fsEfl,
and
to
earth.
Troubleshooting hint
Diagnosis-No.
15 (automatically cancclledl
ECU
terminal voltage
(1
@
lTl?lTI.lTIemTItItl
tg5gJ5[sgegsugf
o
o
(t
1r
Terminal
No.
Signal
Conditions
Terminal
voltage
2
Control
unit
power supply
\Mren the auto-
cruise control
srruitch
(CRUISEI
is
srvitched ON.
System
voltage
8.
14
Control unit
earth
At
alltimes
OV
Terminal
No.
Signal Conditions
Terminal
voltage
17
SET
switch
When the
SET
switch
is
switched
oN.
OV
When the
SET
switch
is
switched
OFF.
System
roltage
@
Mat3ubi3hi Motors
Corporation
Apr.
1991
FWUE9010