1990 MITSUBISHI ECLIPSE Service Manual

23-20BODY - Central Door LocksCENTRAL DOOR LOCKS
Ri... 4sThe central door-lock system, by which all doors can
be locked or unlocked (from the inside by using the
inside door lock knob at either front door, or from
the outside by using the door key), not only sewes
to reduce the trouble of individually locking orunlocking each door when passengers get out or
get in, but also maintains passenger safety.
For the central door-lock system, the operation of
the lock actuator is regulated by the door control
unit.
Door lock actuator(right side)Door-control unit
(left side)
Door lockcontrol relay16A0464
PTC heater
/MotorISwitchDOOR LOCK ACTUATOR
The actuator is light in weight and is the highly reliable motor
We.
NOTE
The door lock actuator incorporates an internal PTC thermist’-so as to Prevent damage as the result of overheating of
L
motor.*: PTC
is an acronym for Positive Temperature Coefficient.
The thermistor with a positive temperature coefficient
ofresistance provides more resistance as it generates
heat,thus limiting current and controlling the amount of
haat
generated.

BODY - Central Door Locks23-21
IBattery
1IJDoor lock 4Door lockactuator t(left side)actuator
(right side) -Battery
Init !,WF%;$TlON OF THE CENTRAL DOOR

When the doors are locked (by using the inside lock
knobs or the door key), the door lock switch
(incorporated within the door lock actuator) is
switched OFF, and then, because current flows to
the fuse, as well as to the door-control unit and the
lock timer, the lock timer causes base current to
flow to
TrI for 0.5 second, thus switching ON Tr,. As
a result, current flows to the fuse, as well as to the
“lock” side coil of the door lock relay,
Tr,, and to
ground, thus switching ON the “lock” side contacts
of the door lock relay and activating the door lock
actuators, thereby locking the doors.

When the doors are unlocked (by using the inside
lock knobs or the door key), the door lock switch
(incorporated within the door lock actuator) is
switched ON, and then, -because current flows to
the fuse, the door-control unit and the lock timer,
the lock timer causes base current to flow to
Tr? for
0.5 second, thus switching ON
Tr7. As a result,
current flows to the fuse, as well as to the “unlock”
side coil of the door lock relay,
Trp, and to ground,
thus switching ON the “unlock” side contacts of the
door lock relay and activating the door lock
actuators, thereby the doors.
(left side)(right
side) -

23-22BODY - Power Windows
POWER WINDOWS
R’1Power windows are equipped in order to facilitate
A lock switch is provided at the power windows’
the opening and closing of the door glass. The
main switches; when the lock switch is ON, the
driver’s seat switch incorporates a one-touch open
mechanism that causes the driver’s door window towindow cannot be opened or closed by using the
main switch for the front passenger seat window.
open completely once the switch is pressed all the
way, even if it is released immediately.Furthermore, at this time none of the sub switches
can be used for opening or closing the windows,
Main switch
CIRCUIT DIAGRAMIgnition
Battery switch
l-l-
’ 1Fuse ’
Z*,“““”CrPower window main switch
-*W(WlI. _;:
r-
L
--e.
.
I
ELnA
I
Powerwindow
subswitch
(R.H.)
I IOne-touch down (open) circuit
--P’-‘-,
-

BODY - Power Windows23-23
IBatterv
---IBatteryOPERATION OF THE POWER WINDOWS

1. When the switch is operated, contacts “b” and
“c” at the “DOWN” side are caused to connect.
and current flows from the battery to contact
“b”, contact “c”,the motor, contact “c”‘,
contact “a”‘,
resistor R and to ground, and, as aresult, the motor rotates to the “DOWN” side.
2.Current from contact “b” and contact “c” flows
through diode
DI and R.; then I% and I%, and R,and
R7, cause reference voltage to be applied to
the negative
(-) side of IC and the positive (+)
side of
G. The reference voltage is maintained
at a certain fixed level by the
ZD.3. During the time that the motor is in operation,
the amount of current flowing to the motor is
not very much, and, because the voltage
(ICcomparison voltage) at point A is lower than the
reference voltage at the negative
(-) side of IC,,the output voltage of
IC becomes low. For G,because the voltage
(G comparison voltage) at
the negative
(-) side becomes lower than the
reference voltage at the positive (+) side, the
output voltage of
lC2 becomes high, and the
transistor
(Tr) is switched ON.
4. Because the transistor
(Tr) is switched ON,
current also flows from diode
D1 to the coil (L).thus causing excitation of the coil
IL), with the
result that the switch is held by the plunger.

1. When the glass reaches the lowermost point,
the amount of current flowing to the motor
increases, and the voltage applied at point A also
increases.2. When the voltage
(IC comparison voltage) at
the positive
(+) side of IC becomes higher than
the reference voltage at the negative
(-) side,
the output voltage becomes higher but voltage
is prevented from being applied momentarily to
the negative
I-) side of ICI by resistor R6 and the
capacitor
0.This is a delay circuit that delays the time that
the transistor
(Tr) will be switched OFF when
the output voltage of
IC, becomes low, so that
the glass is correctly opened to its full extent.
The motor operates for 0.7 second after the
glass reaches its lowermost position.

23-24BODY - Power Windows / Bumpers
Batterv
r--+----
02’
BUMPERSA large-size integral soft fascia is installed both for
the front and rear bumpers, which prevents perma-
nent deformation in light collision.
The bumpers feature the highly rigid bumper
rein-
18A0420
Section A-A
Front turn Front bumper
/Front bumperbumper
t Jabsorber
reinforcement18AOllB

1. After the delay time (0.7 second) has
claps,+,,,the voltage (comparison voltage) at the negative
(-1 side of IC2 becomes higher than the refer-
ence voltage at the positive
(+) side, with the
result that the output voltage of
ICI becomes
low, and the transistor
(Tr) is switched OFF.
2. As a result of the transistor
(Tr) being switched
OFF, current stops flowing to the coil
(L), and
thus there is no longer the force to hold the
plunger.
3.As a result, the switch is returned to the neutral
status by the return spring, and the motor
operation stops.
R22JMBforcement, shock absorber, and highly rigid
b --
frame, all of which contributes to the reduL.
aprotrusion, yet ensuring
5-mph bumper perform-
ance for the enhanced safety.
Rear bumpe:,.AOIOI
-

CUNROOF
BODY - Sunroof23-25
R22lAAA
L
I he sunroof is fitted with a roof lid made from tempered glass to provide a well-ventilated and well-lighted
cabin with ample openness. It also consists of the glass assembly, tilt handle and removable sunshade.
This sunroof has the following features.
.i The tilt up mechanism. for lifting the rear of glass by the tilt handle lever has been adopted.
i; l2;The roof lid glass can be removed to have as much openness as offered by an open convertible. In
addition, a storage bag and fastening belt have been provided to stow the removed glass in the trunk.
l The removable sunshade has been installed to keep off the strong sun.
l The removable deflector has been adopted to prevent air turbulence.f
iDeflector
Hinge
Drain hose
IHeadlining

23-26BODY - Sunroof
Roof lid glassSection A-ARoof lid glass
Hinge female
mm?44Section B-B
Roof lid glassSection C-CRoof lid glass
/
-mAO74E
-

BODY- Door Mirrors .23-27
DOOR MIRRORSIPIKhAC
.i~e large-size Talbot mirrors are attached on the
front doors that smoothly blend into the body
styling. They also contribute to the reduced aerody-
namic drag.
ELECTRIC REMOTE CONTROL MIRRORThe electric remote control mirror is a two-motor
type mirror for independent vertical and horizontalNote that the electric remote control mirror switch
angle
adjustment The mirror system consists of ais the centralized-control type and is installed on the
mirror assembly, actuator assembly, frame, body,door trim on the driver’s seat side. The one switch
etc.can be used to adjust the direction settings (to the
left and right, and up and down) of the left and right
_ mirrors.
/
/
l Pivo; screwFrameBody*Adjustment nutleAo398
‘Motor
B
NOTE
IThe &ark l denotes component parts of actuator assembly.
I