1991 MITSUBISHI ECLIPSE Service Manual

AUTOMATIC TRANSAXLE - Troubleshooting21-203
CIRCUIT DIAGRAM
J/B
63IOA
0
'13l-----AWD1
cL
13 C-67
1
'OU'EiRaPPLl
--b
7
1'
I
I
3
xl:- 71
03
4
I
L--
-----------------16 C-502zs
4
C-58
El
THEFT-ALARM
CONTROL UNIT
INHIBITORSWITCH
B-25
r
STARTER MOTOR
X35-AC-U0705-NC

21-204AUTOMATIC TRANSAXLE - Troubleshooting
c;_----__---___-.
IGNITIONSWITCH(IG2)0
?
3E-7r
0
1UA
\IEjC-53mJ
ca (LB)
POWER/
ECONOMY
;$;;E OVER "r-
D-19A, .
12l!i3Fl3453$
,F
IGHT
3 19 ~lo~ll~l2~la~lq1qls
E
A/T SELECTOR
LEVER POSITION
ILLUMINATIONLIGHT
WITHOUTAU;iUi~;UISE
hf---
II
sP5 11
LIEI
AUTO-
CRUISE
CONTROL
UNIT
Y
-t
______--___---__--------
4
gF
C-61 57_______-__-----_---_-----
J/B
Remark**Mark indicates the oPtional wiringFEI~~I;S for auto-cruise control

AUTOMATIC TRANSAXLE - Troubleshooting21-205
AIR CONDITIONER
CONTROL UNITIGNI
CRCFILTER
B-11
ON+OFF:2700kP.%(384Psl)OFF+ON:
$;X;kERATOR
SWITCH
WITH
WITHOUT,$J;$JR~;UISE 1AUTO-CRUISE. CONTROL
SELFJ-DIAGNOSIS
CONNECTOR
TIO1
/-1. 8LENGINE
3J
I
IL.&.j IUK1
mB
x 1
mm
CLCL
--
‘----_06
Pz
1_----
t
29I
POWE
TRANSTOR
c-30
FRONT SIDE
p&a-q
E%ERSE
p!!iQqI-----
101
NON-TURBC
/ 0
2_----II
A
-----02
9
I.----,
IL-B
GtD G:DGB“tD----1
B-24 4-SPEED AUTOMATICTRANSAXLE SOLENOID VALVE
Remark*%Mark indicates the optional wlrlnsharness for auto-cruise control system.KX35-AC-U0705A-NCfg

21-206AUTOMATIC TRANSAXLE - Troubleshooting
r-------1.8L ENGINEirI I
---_-____-_--
2.0L DOHC ENGINE
C-66
aB1 c-47 l ’
J/B
\/2 c-50
2-i
,7
C-67
ID;ESWITCH
B-05 q ’
I
,21
i-I+
*
-id-
*
-
i-ET
C--
.--C
1--
-
A-37
I@JJ
NON-TURBO
I,1,.1 $~#~OWN
SWITCH
,
A-38
TURBO-IIBI--------
r
kxrnc
--.--
c!--
31
?--
.--
3
I‘--
:
m
Ii
5- 59 D-06
h
I
I
I
COMBINATION i1
METER
D-05 m
-u-uu-u
PULSEGENERATOR
A-51
,4/s&q4 c-49 12
J-r
EDa411 12“pcu

AUTOMATIC TRANSAXLE - Troubleshooting21-207
E.L.C. 4-SPEED AUTOMATIC TRANSAXLE CONTROL COMPONENTS LAYOUT
NameSymbolNameSymbolDiagnosis connector
FPulse generator BA
Engine control unit
ISolenoid valvesCOil temperature sensor
DThrottle position sensorBPower
(PWR)/Economy (ECO) select switchGTransaxle control unitHPulse generator AAVehicle-speed sensor
E1
NOTE
1. The “Name” column is arranged in alphabetical order.2.Refer to GROUP 14-On vehicle inspection of MPI components for installation position of H throttle positionsensor.
1.8L Engine2.0L DOHCEngine

21-208AUTOMATIC TRANSAXLE - Troubleshootingselect switch

AUTOMATIC TRANSAXLE - service Adjustment Procedures21-209
09Pooi awith this range.
09POOll
TWO382
SERVICE ADJUSTMENT PROCEDURESN21FB6E
TRANSAXLE FLUID LEVEL INSPECTION1. Drive until the fluid temperature reaches the usual tem-
perature
[70-80°C (160- 18O”F)I.2. Place vehicle on level floor.
3. Move selector lever sequentially to every position to fill
torque converter and hydraulic circuit with fluid, then place
lever in “N” Neutral position.
4. Before removing dipstick, wipe all dirt from area around
dipstick. Then take out the dipstick and check the conditionof the fluid.
The transaxle should be overhauled under the following
conditions.l If there is a “burning” odor.
l If the fluid color has become noticeably blacker.
lIf there is a noticeably great amount of metal particles inthe fluid.
5.Check to see if fluid level is in “HOT” range on dipstick. If
fluid level is low, add automatic transaxle fluid until level
reaches “HOT” range.
Transaxle fluid: MOPAR ATF PLUS (Automatic trans-
mission fluid type 7176) or Dia ATF SPor equivalent
Low fluid level can cause a variety of conditions
becaljse it
allows pump to take in air along with fluid. Air trapped in
hydraulic circuit forms bubbles which make fluid spongy.
Therefore, pressures will be erratic, causing delayed shift,
slippy clutch and brakes, etc.
Improper filling can also raise fluid level too high. When
transaxle has too much fluid, gears churn up foam and
cause the same conditions which occur with low fluid level,
resulting in accelerated deterioration of automatic transaxle
fluid.In either case, air bubbles can cause overheating, fluid
oxidation, which can interfere with normal valve, clutch,
and servo operation.Foaming can also result in fluid
escaping from transaxle vent where it may be mistaken for
a leak.6. Be sure to examine fluid on dipstick closely.
TRANSAXLE FLUID REPLACEMENTN21FCBAaRefer to GROUP O-Maintenance Service.
TRANSFER OIL LEVEL INSPECTIONNZlFXAATransfer oil level inspection is the same as for the manual
transaxle transfer.
Refer to GROUP
22-Service Adjustment Procedures.
TRANSFER OIL REPLACEMENTNZlFYAFaTransfer oil replacement is the same as for manual transaxle
transfer.Refer to GROUP
22-Service Adjustment Procedures.

21-210AUTOMATIC TRANSAXLE - Service Adjustment Procedures
OSA0141
ti Button pressed (while brake
pedal is depressed)
l Button not pressed
9 Button pressed
SELECTOR LEVER OPERATlON CHECKNZlFlAE1. Shift selector lever to each range and check that lever
+moves smoothly and is controled. Check that position
indicator is correct.
-L*
2.Check to be sure the selector lever can be shifted to each
position (by button operation as shown in the illustration).
3. Start the engine and check if the vehicle moves forward
when the selector lever is shifted from
N to D, and moves
backward when shifted to
R.4. When the shift lever malfunctions, adjust control cable
and selector lever sleeve. Check for worn shift lever
assembly sliding parts.
NOTETo move the selector lever from the “P” position to any
other position, first turn the ignition key to any position
other than “LOCK (OFF)” and depress the brake pedal.
KEY INTERLOCK MECHANISM CHECKNZlFUAA1. Completely stop the vehicle and switch OFF the engine
before making the check.
2. Check to be sure that, under the following conditions, the
select lever cannot be moved from the “P” position to any
?cother position.
~.‘,Also check, at the same time, that the button cannot be
pressed.Ignition key position:
“LOCK (OFF)“, or removed
Brake pedal: Depressed
3.Check to be sure that, under the following conditions, the
select lever can be moved from the “P” position to any
other position.
Press the button a few times and check to be sure that the
select lever moves smoothly.
Ignition key position: “ACC”
Brake pedal : Depressed
Button
: Pressed4. Check to be sure that, at all positions of the select lever
(other than
“P”), the ignition key cannot be turned to the
“LOCK (OFF)” position.
Check to be sure that the ignition key smoothly turns to the“LOCK (OFF)” position when the select lever is then set to
the “P” position and the button is released.
5. If a malfunction is discovered when following the above
,”checking procedures, either adjust or check the key
interlock cable mechanism. (Refer to
P.21-220.)