1991 MITSUBISHI ECLIPSE check oil

21480AUTOMATIC TRANSAXLE - Troubleshootina
FAULT CODE DESCRIPTION
Code
No.Output patternDescription
Remedy
11Abnormal increase of TPS outputl Check the throttle position sensor
nconnector.
l Check the throttle position sensoritself.
12l Adjust the throttle position sensor.
Abnormal decrease of TPS outputl Check the accelerator switch
(Code No. 24output
or not).Malfunction of the throttle-
position sensor or incorrect
adjustment
Damaged or disconnected wiringl Check the oil temperature sensorof low oil temperature sensor
connector.
l Check the oil temperature sensoritself.
16Short circuit of high oil tempera-ture sensor
Damaged or disconnected wiring
of high oil temperature sensor orshort-circuit of low oil tempera-
ture sensor
21
n
Damaged or disconnected wiringl Check the kickdown servo switchof the kickdown servo switch
connector.l Check the kickdown servo switch
itself.
22
nnShort circuit of the kickdown
ser-vo switch
23Damaged or disconnected wiringl Check the ignition pulse signal line.
of the ignition pulse pick-up cable24
Short circuit of the acceleratorswitch or improper adjustmentl Check the accelerator switch con-
nectar.l Check the accelerator switch itself.
l Adjust the accelerator switch.
31
u’u I n
Damaged or disconnected wiring
of the pulse generator AlCheck the pulse generator A and
pulse generator B themselves.l Check the vehicle speed reed
switch (for chattering).32
Damaged or disconnected wiring
uuLnJ-l-of the pulse generator B
12A0104
12A0107

21-188AUTOMATIC TRANSAXLE - Troubleshooting
INSPECTION OF ELECTRONIC CONTROL SYSTEM COMPONENTS
Based on the wiring diagram,check whether the continuity and
grounding of each harness is OK.
+
cContinuitvJ.
4
/
.NormalI
1
Improper connection of
connector, damaged or
+ disconnected harness,or incorrect wiring con-
nection.
L
J1
Reconnect the connec-
tor; repair or replace the
harness.
I\
Vary the thermo-sensitive part
uarriageu ur ursconnecreawiring
I/
IReplace the oil-Chanaes of the resistance con-\temoerature sensortinuo& and smooth.4
I 1750446 -Normal,
1: (+) side2:
(-) side
2.0L DOHC TurboEngine
1I
Y3.
Throttle-Check the resistance betweenosition sensorterminals 1 and 4 (1 and 2 forDamaged or discon-
PTPS)SOHC models) of theTPS.netted wiringI
I
TPS termrnal
2.0L Engine
1. power
7FUO5352. output3. -4. ground
1.8L Engine
1. power
2. ground
3. output
+
(3.5-6.5 S2/2O”C (68°F)1Check the resistance between
terminals 4 and 2 (2 and 3 forSOHC models) with the engine
idling after throttle-valve opening
warm-up.
4
Resistance: approx. 0.4 kilohml
20°C (68°F)I
Improper adjustment
J
’Readjust the TPS in-
stallation.Check for changes of the resist-
ance between terminals 4 and 2
(for SOHC between terminals 3
and 2 when the throttle valve is
operated from the idling position
to the fully open position.
4Changes of the resistance con-
tinuous and smooth.
4
Normal

AUTOMATIC TRANSAXLE - Troubleshooting21'495
OIL PRESSURE TESTS
1.
2.
3.
4.
5.Completely warm up the transaxle.
.”Raise the vehicle by using a jack so that the drive wheels
can be rotated.
Connect an engine tachometer and place it in a position
where it’s easy to see.
Attach the special oil-pressure gauge
(C-3292 or C-3293)and the adaptor
(MD998332) to each oil-pressure outlet
port.When the reverse pressure is to be tested, the 3,000
kPa(400 psi) type of gauge should be used.
Measure the oil pressure under various conditions , and
check to be sure that the measured results are within the
standard value range shown in the “Standard oil pressure
table” below.
If the oil pressure is not within the specified range, check
and repair as described in the section “Remedial steps if oilpressure is not normal” on the next page.
m // @ Kickdown brake

AUTOMATIC TRANSAXLE - TroubleshootingRemedial Steps If Oil Pressure Is Not Normal
F4A22.,,‘
frouble symptomProbable causeRemedy1;
I. *Line pressures
a.Clogging of oil filtera.Visually inspect the oil filter; replace the oil filte
are all low (or high).
if it is clogged.
NOTEb.Improper adjustment of oil press-b.Measure line pressure @ (kickdown brake*“Line pressures”ure (line pressure) of regulator
pressure); if the pressure is not the standard
refers to oil
ress-ures@,@, 4 and
8
valvevalue, readjust the line pressure, or, if neces-sary, replace the valve body assembly.
@in the “Standardc.Sticking of regulator valvec.Check the operation of the regulator valve;oil pressure table”repair if necessary, or replace the valve body
on the previousassembly.
page.d.Looseness of valve body tighten-d.Tighten the valve body tightening bolt and
ing partinstallation bolt.‘- ,
e.Improper oil pump dischangee.Check the side clearance of the oil pump gehr;
pressurereplace the oil pump assembly if necessary.
I. Improper reducinga.Improper line pressurea.Check the @ kickdown brake pressure (line
pressurepressure); if the line pressure is not the
standard value, check as described in item 1
above.
b.Clogging of the filter (L-shapedb.Disassemble the valve body assembly and
type) of the reducing-pressure cir-check the filter; replace the filter if it is clogged.cuit
c.Improper adjustment of the re-c.Measure the @I reducing pressure; if it is not
ducing pressurethe standard value, readjust, or replace the
valve body assembly.
d.Sticking of the reducing valved.Check the operation of the reducing valve; if
necessary, repair it, or replace the valve body
assembly.
e.Looseness of valve body tighten-e.Tighten the valve body tightening bolt and
ing partinstallation bolt.
#. Improper kick-a.Malfunction of the D-ring or seala. Disassemble the kickdown servo and check
down brake press-ring of the sleeve or kickdownwhether the seal ring or D-ring is damaged.
ureservo piston.If it is cut or has scratches, replace the seal ring
or D-ring.
b.Looseness of valve body tighten-b.Tighten the valve body tightening bolt and
ing partinstallation bolt.
c.Functional malfunction of thec.Replace the valve body assembly.
valve body assembly
. Improper front
clutch pressure
a.Malfunction of the D-ring or seala. Disassemble the kickdown servo and check
ring of the sleeve or kickdownwhether the seal ring or-D-ring is damaged.servo piston.
If it is cut or has scratches, replace the seal ring
or D-ring.
b.Looseness of valve body tighten-b.Tighten the valve body tightening bolt and
ing partinstallation bolt.c.Functional malfunction of thec.Replace the valve body assembly.
valve body assembly
d.Wear of the front clutch piston ord.Disassemble the transaxle itself and check
retainer, or malfunction of the
@whether or not there is wear of the front clutch
D-ring, @ seal, ring.piston and retainer inner circumference, or
ra;;; to the figure on the nextdamage of the D-ring. If there is any wear or
damage, replace the piston, retainer, D-ring
and/or seal ring.
1. Improper endclutch pressure
a.Malfunction of a D-ring @or seala.Disassemble the end clutch and check the sealring 0, @of the end clutch or
O-ring @I of the pipe (Refer to thering, D-ring of the piston, seal ring of thefollowing figure.)retainer, etc.; replace if there are cuts, scars,
scratches or damage.
b.Looseness of valve body tighten-b.Tighten the valve body tightening bolt and
ing partinstallation bolt.c.Functional malfunction of thec.Replace the valve body assembly.
valve body assembly

21-198AUTOMATIC TRANSAXLE - Troubleshooting
Trouble symptom6. improper
low-
reverse brake
pressure
7. Improper torque
converter pressureProbable causea.O-ring between valve body and
transaxle damaged or missing
b.Looseness of valve body tighten-
ing part
c.Functional malfunction of the
valve body assembly
d.Malfunction of the O-ring 0 of thelow-reverse brake piston or the
O-ring
0 of the retainer (Refer tothe figure below.)
a.Sticking of the damper clutch
control solenoid valve (DCCSV) or
the damper clutch control valve.
b.Clogging or leaking of the oil
cooler and/or piping
2.Damaged seal ring @of the input
shaft (Refer to the figure below.)
3.Malfunction of the torque conver-
ter
Remedy
a.Remove the valve body assembly and check to
be sure that the O-ring at the upper surface of
the upper valve body is not
missinor dam-
aged; install or replace the O-ring i7necessary.
b.Tighten the valve body tightening bolt andinstallation bolt.
c.Replace the valve body assembly.
d.Disassemble the transaxle itself and check the
O-ring for damage; replace if there are cuts,
scars, scratches or damage.
a.Check the operation of the damper clutch
system and the DCCSV.
b.Repair or replace, as necessary, the cooler
and/or piping.
c.Disassemble the transaxle itself and check for
damage of the seal ring; replace the seal ring if
there is damage.
d.Replace the torque converter.
@D-ring@Seal ring
-OD-ring@Seal ring
(@Seal ring
@O-ring
1750437

AUTOMATIC TRANSAXLE - Troubleshooting
F4A33-W4A33Trouble symptom
1. Line pressures areall low (or high).
NOTE* “Line pressures”
refers to oil
pressure @,@I, 0,0, @I and 0, inthe “Standard oil
pressure table” on
the previous page.
2. Improper reducing
pressure3. Improper
kickdown brake
pressure (Apply)
4. Improper
kickdown brake
pressure (Release)
5. Improper front
clutch pressureProbable cause
a.Clogging of oil filter
b.Improper adjustment of oil
pressure (line pressure of
regulator valve
c.Functional malfunction of valve
body assembly
d.Looseness of valve bodytightening part
e.Improper oil pump dischange
pressure
a.Clogging of the filter (L-shaped
type) of the reducing-pressurecircuit
b.Improper adjustment of oil
pressure
c.Functional malfunction of thevalve body assembly
a.Malfunction of the seal ring @,
D-ring @I or seal ring 0 of thesleeve of the kickdown servo
piston.
b.Functional malfunction of the
valve body assembly
a.Malfunction of the seal ring @,
D-ring @ or seal ring a> of thesleeve of the kickdown servo
piston.
b.Functional malfunctio? of the
valve body assembly
a.Malfunction of the seal ring @,
D-ring @or seal ring Q3 of thesleeve of the kickdown servo
piston.
b.Functional malfunction of the
valve body assembly
c.Wear of the front clutch piston or
retainer, or malfunction of theD-ring 0 or seal ring @.
Remedy
a.Visually inspect the oil filter; replace the oil filter
if it is clogged.
b.Measure line pressure @ (kickdown brake
pressure); if the pressure is not the standard
value, readjust the line pressure, or, if
necessary, replace the valve body assembly.
c.Replace the valve body assembly.
d.Tighten the valve body tightening bolt and
installation bolt.
e.Check the side clearance of the oil pump gear;
replace the oil pump assembly if necessary.
a.Disassemble the valve body assembly and
check the filter; replace the filter if it is clogged.
b.Measure the @ reducing pressure; if it is notthe standard value, readjust, or replace the
valve body assembly.
2.Replace the valve body assembly.
a.Disassemble the kickdown servo and check
whether the seal ring or D-ring is damaged.
If it is cut or has scratches, replace the seal ring
or D-ring.
3.Replace the valve body assembly.
3.Disassemble the kickdown servo and check
whether the seal ring or D-ring is damaged.
If it is cut or has scratches, replace the seal ring
or D-ring.
3.Replace the valve body assembly.
3.Disassemble the kickdown servo and checkwhether the seal ring or D-ring is damaged.
If it is cut or has scratches, replace the seal ring
or D-ring.
I.
Replace the valve body assembly.
:.Disassemble the transaxle itself and checkwhether or not there is wear of the front clutch
piston and retainer inner circumference, or
damage of the D-ring and/or seal ring. If there is
any wear or damage, replace the piston,
retainer, D-ring and/or seal ring.

21-200AUTOMATIC TRANSAXLE - Troubleshooting
Trouble symptom
6. Improper rear
clutch pressure*,Probable causeRemedy
a.Malfunction of D-ring @of reara.Disassemble the rear clutch, check input shaft
clutch piston, retainer seal ring
@$I
and seal rings @and 0 of inputseal ring, retainer seal ring, piston
D ring, etc.
and replace broken or damaged parts.
shaft.
b.Functional malfunction of theb.Replace the valve body assembly.
valve body assembly7. Improper end
clutch pressure
a.Malfunction of seal ring @or thea.Disassemble the end clutch and check the oil
D-ring
@I and/or oil seal 0 of endseal or D-ring of the piston, seal ring of the
clutch.retainer, etc.; replace if there are cuts, scars,
scratches or damage.
b.Functional malfunction of theb.Replace the valve body assembly.
valve body assembly8. Improper
low-a.O-ring between valve body anda.Remove the valve body assembly and check to
reverse braketransaxle damaged or missingbe sure that the O-ring at the upper surface of
pressurethe upper valve body is not
missin7or dam-
aged; install or replace the O-ring inecessary.
b.Functional malfunction of theb.Replace the valve body assembly.
valve body assembly
c.Malfunction of the D-ring @of thec.Disassemble the transaxle itself and check the
low-reverse brake piston or theD-ring and O-ring for damage; replace if there
O-ring
@I of the retainerare cuts, scars, scratches or damage.9. Improper torque
a.Clogging or leaking of the oila.Repair or replace, as necessary, the coolerconverter pressure
cooler and/or pipingand/or piping.b.Malfunction of the torque conver-b.Replace the torque converter.ter

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.