1989 MITSUBISHI GALANT clutch

AUTOMATIC TRANSAXLE - Troubleshooting23-35
l TPS system isdefective.
ilpressure
is improper.verter clutch (TCC) solenoid
B Service datam Item No.49
CHECKING THE CONTROL SYSTEM (WHEN A SCAN TOOL IS USED) FOR 1990.5, 199\
1, 1992
AND 1993 MODEL
Inspection item
;;;yle posrtion sensor *Data
list
l Item No. 11
Oil temperature sensor *Data
list
0 Item No. 15
Krck-down servo switch
*Data list
*Item No 21
‘gnition signalInjectron signal) ,Data
list
D Item No. 23
iccelerator pedal switchexcept 1993 models)~Data listbItem No.24
Qr conditioning relay signalrData list rltem
No.26
Transaxle gear position~Data listm Item No. 27
-rInspection content
Inspection condition
Accelerator is
fullv closed.
LSlowly press in the accelerator pedal.
1 Possible cause (or remedy)for the abnormality
l If voltage is high at the full opening 01closing, TPS IS adjusted improperlv.elf no variation is observed. TPS 01
Accelerator IS fully opened.
--circuit harness ic r(afndi
O,a “ClrULIIu.
4.5-5.ov*If it does not vary smoothly. TPS OII- .-d-L__.:__accelerator cable IS oerectrve.
When engine is cold (before starting)
Equivalent to*Oil temperature sensor or circuit barbarometricness is defective.
During engine warming-up driving
After engine is warmed uptemperature
It gradually rises.
80- 110°C(176”F-230°F)
L range, idling
D range. 1st or 3rd speed
D range, 2nd or 4th speed
ON
ON
OFFl Kick-down servo IS adjusted improperIv.l Krckdown servo switch or circurt barness IS defective.
*Defective kick-down servo
N range, idling
N range, 2.500 rpm (read on the tachometer)
650-900 rpm l Ignition system is defective. 2.400-2.600
rpml Harness of ignition signal pick-up cir-cuit is defective.
Accelerator
IS fully closed.
Press in the accelerator pedal
sliphtlv.I
ON
OFF
l Accelerator pedal switch is adjusted
improperly. *Accelerator

oedal switch or circuit har-ness is defective.
D range, air conditioning, idling-up state
D range, air conditioning, switch-off state
ON
OFF
l Harness of circuit which detects the airconditioning power relay ON signal isdefective.
D range, idling
L range, idling
Cl TCM is defective.r A~d~r~tnr nednl +witch svstem is de-
!IST, -;,,tl;;..- r..--. -.-.--..
-,---,.,.,.,.v.l Park/Neutral position switch system isdefective.2nd ran!ge. 2nd speed
D renqe. O/D-OFF. 3rd speedl TPS system is defective.-~~~~~D range, O/D. 4th speed4TH
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23-36AUTOMATIC TRANSAXLE
- Troubleshooting
Inspectron ItemInspection content
Inspectron condrtion
Possible cause (or remedy)
1 Criterion valuefor the abnormality
Pulse generator A (FWD)D range, 2nd speed, drivrng at 30 km/h (19 mph)
0 rpml Defective pulse generator A or harness*Data
list *Defective shield cable of pulse gene
l item No.31D range, 3rd speed, drivrng at 50 km/h (31 mph) 1.600-2.000
rpmrafnr A
D range, 4th speed, driving at 50 km/h (31 mph)n
Pulse generator AW’J’JD) *Data
lrstl Item No. 31
D range, stopprng state 0 rpml Defective pulse generator A or harness *Defective
shield cable of pulse gene
D range, 3rd speed, drivrng at 50 km/h (31 mph) 1.800-2.200
rpmrator A
D range, 4th speed, driving at 50 km/h (31 mph) 1.200-1.600
rpml External noise rnvasronl Slip of kickdown brake
Pulse generator Bl Data listl Item No. 32
D range, stopping state 0 rpml Defective pulse generator B or harness
D range, 3rd speed, driving at 50 km/h (31 mph) 1.600-2.200
rpm *Defective
shield cable of pulse generator B
D ranoe. 4th soeed. drivina at 50 km/h (31 mph) 1.600-2.200
mml External noise invasron
Overdrive switch *Data
list
*Item No.35
Turn on the overdrive switch.
Turn off the overdrive switch.OD
OD-OFF
moverdrive switch or circuit harness isdefective. Power/economy switch
*Data list
l item No.36
Select the power pattern.
(Including economy pattern control at the low oil
temperature) Power
l Powedeconomy switch or circuit har-ness is defective.
Park/Neutral posrtion
(PNP) switch
l Data list*Item No.37
Select the economy pattern.
Shaft to P range
Shift to
R range
Shift to
N range
Shift to
D range
Shift to 2 ranqe
Economy
Pl Park/Neutral position switch is adjusted
improperly.
Rl Park/Neutral position switch or circuil
Nharness is defective.aManual control cable is defective.Dl inspect the shift lock device when theselector lever is not moving.2
1 Shift to L ranqe
I L I
vehicle speed reed switch *Data

lrstl Item No.38
0 km/h (0 mph)
-1
l If high speed signal is output when thevehicle stops, the vehicle speed reed
switch is defective
.
*In other cases, vehicle speed reed
switch or circuit harness is defective.
=CSV dutyl Data listl item No. 45
l If accelerator pedal is pressed in evenslightly in the idling state ofD range
*Accelerator pedal switch IS defective.
rorque converter clutch slrp D range, 3rd speed 1,500 rpmamount(read on the tachometer)m Data listmltem No.47D range, 3rd speed 3,500 rpm
(read on the tachometer) 100-300
rpm
0 rpm
l Torque converter clutch
is defective.
l Ignition signal cable or pulse generatorsystem is defective.l Transaxle oil pressure is improper.l Torque converter clutch (TCC) solenoid
is defective.
rorque converterclutch D range, 3rd speed 1.500 rpm0%l TCM is defective.TCC) solenoid duty(read on the tachometer)) Data listl TPS system is defective.
Dltem No.49D range, 3rd speed 3,500 rpmVariationl Pulse generator B system is defective.
(read on the tachometer)deoendina
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AUTOMATIC TRANSAXLE - Troubleshooting23-37
ELEMENT IN USE AT EACH POSITION OF SELECTOR LEVER
NOTECl. . . . . . . . .FrontclutchC2 . . . . . . . . .Rear clutchC3 . . . . . . . . .EndclutchOWC . . . . . . One-way clutchBl
. . . . . . Kickdown brake82 .._.. Low-reverse brake
SHIFT PATTERNS
Two

shift patterns
are pm-stored
in the
control
‘unit of
this transaxle.
One is the
power
pattern
(for more powerful
performance), and
the
other
is the
economy
pattern
(for
improved

fuel consumption
and quieter
operation).
(Refer to
the

diagram below.)
The
driver
can select
and switch to the
desired
pattern
by
using
the
power/economy
select

switch on the
center
console.
The solid lines
shown
in these
shift patterns
indicate
up-shifts,
and
the
broken lines indicate. down-shifts. The reason why there

is a difference
between
the
shift points for
up-shifts
and for

down-shifts is so that up-shifts
and down-shifts will not
occur frequently
when
driving
at
a speed in the
vicinity of the
shift
point.
When the
vehicle

is stopped,
there
is a shift to -2nd gear
in order
to
obtain
a suitable
“creeping”, but
when the accelerator
pedal is
then
depressed
the
vehicle
starts
off in 1st gear.
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23-48AUTOMATIC TRANSAXLE
- Troubleshooting
1 press the foot, brake firmly.1W
ith the engine
idliqg, de-
Let the engine continue idling.
3
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4;ry;pn”g’ y stment 1
+
Readjust the ,idling.
1 ~i$.;h~,~~~e clutch 1

AUTOMATIC TRANSAXLE - Troubleshootinn
9. Torque
conver-
ter clutch
(TCC)solenoid Check the resistance between
terminal 2 of the solenoid valve connector and the transaxlecase.
Short-circuit, or dam-
too low
or too aged or disconnected
wiring
I
Solenoid valve
4*
(Standard value: 3 Q/2O”CReplace the TCC solenoid
/-connector terminals
Connect 12V between the trans-
*Stickingis
usually at the
1750338
4
Normal1release side.
4
Replace the TCC solenoid
W
ith the accelerator pedal not
depressed, check the resistance between terminals 1 and 2.
1
Continuity exists (resistance: 0)
Problem not solved.
1
1
E/l2
171096 Replace the accelerator
switch.
W
ith the accelerator pedal de-
No continuity (resistance:
CQ)I
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+
Normal

AUTOMATIC TRANSAXLE - Troubleshooting23-53
STANDARD OIL PRESSURE TABLE
KM175,
F4A22
. . .
Up to MODEL 1990
ConditionsStandard oil pressure kPa (psi)
N
O.1p -,-,..,-,,-_1Engine1Ch;J+1-0.1,,._,?...-1F%tclutch1E;;;;;;h1Lov$rse1To;;er13eleLL IfsYCIpositionspeedrpm
cl,1111positionneaucrng
pressurehlCI(aOWrIbrake
pressurepressure )Ipressure pressure
1NldlrngNeutral--*
2DIdling2nd gear 100-210
(14-30)
-
3(SWDON,Approx.830-900 830-900
400-600
--2,5004th gear
(118-128)
(118-128) (56-84)
(SWZFFI
Approx.3rd gear370-490830-900830-900 830-900
400-600-42.500
(52-70) (118-128)
(118-128)
(118-128)
(56-84)
52Approx.
2,5002nd gear370-490830-900 400-600-
(52-70) (118-128)
- (56-84)
-*6LApprox.1st gear370-4901,000
(52-70)-;g:gp
7R
A;pp56od(.
Approx.
1,000
Reverse370-490
(52-70) 1.640-2.240
1.640-2.240
(233-318)(233-318)--1.000 (142)1.OOO (I 42)or more
or moreF4A22
. . .From Model, 1990.5
ConditionsStandard 011 pressure kPa (Psi)
[email protected]“__l__^:__KrlrA,vrrnFrontEnd clutch
Low-reverseTorque-Select leve
brakeconverter
position pressure
‘ressurep-“cxm”1~ ,pressure
pressure
:rspeedcl,,,i;ne”“l;lily wmposition
pressureII
I I360-4801NIdlingNeutral(51~6P’2,--*--
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171 DIdling2nd gear360-4f (51-6b,
, \I
30?y;I;;p-*->i
30-900830-900450-650-1n-17RI- (118-128)(64-92)A2pPg4th gear360-480I I,.lY”-“Iv,(51-681
830-9004(SWZFF)A2pWg.3rdgear
(118-128)
,- .~,,,,“~.--,~.-lL”l,E%830-900-fllR-l='4g::;p
I I52
II
A2pg;.2nd gear~~~~~~p830-900-(118-128)-$g:;p
300-450
-*--”LApP&y.1stgear
(43-63)
1
ICI I
1 EEi2840 / _ 1 ‘~o~$~ ) 4iiIi;p7RReverse360-480
(51-68)
-1.000 (142)or more
NOTEmust be 10 kPa (I .4 psi) or less.
SW-ON: Switch ON the overdrive control switch SW-OFF: Switch OFF the overdrive control switch
*: Hydraulic pressure is generated, but not the standard value

23-54AUTOMATIC TRANSAXLE - Troubleshooting
AWD
ConditionsStandard oil pressure kPa (Psi)
000@0@0@
No.Selectm;;ShiftReducing KickdownKickdownFront RearEndLow-Torque-leverpressurebrake brakeclutch clutch clutchreverseconverter
positionvmposition pressure pressure pressure pressure pressurebrakepressure(Apply)(Release)
pressure
1NIdlingNeutral360-480---*(51-68) --
360-480 lfyfI;;; _ 730-8302Dldlrng2nd war (51-68)
(104-118) -*-
(sw!oN)

AgFil’ 4th gear360-480 830-900 830-900
_3--(51-68)
(118-128)
-(118-128)g:gp 830-900
4(SW%FF)Approx. 830-9002.5003rd gear ~~~I$p (y$$zr (~$$EJ (??i??$)(118-128) (118-128) -g::;p
Approx.2nd gear 360-480 830-900
830-900450-650-52(51-68)
(118-128) _-2,500
(118-128) - (64-92)
6LApprox.360-480
830-9001,0001st gear (51 -66)---(118-128) -;:;I$;*
Ap&;.
1.640-2.240
1.640-2.240 1.640-2.240
7R ’Reverse ~~~$~p -(223-319)
(223-319)(223-319) @O-65,,
(64-92

)
Ap”do”o”.1.000 (142) 1.000 (142)1.000 (142)or more
or more or more
NOTEmust be 10 kPa (1.4 PSI) or less.
SW-ON: Switch ON the overdrive control switch
SW-OFF: Switch OFF the overdrrve control switch6: Hydraulrc pressure IS generated, but not the standard value.
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AUTOMATIC TRANSAXLE - Troubleshooting23-55
Remedial Steps If Oil Pressure Is Not Normal
FWD A/T Trouble symptom Probable cause Remedy
1. *Line pressuresa.
a.are all low (or high).Clogging of oil filter
Visually inspect the oil filter; replace the oil filte
NOTEb.Improper adjustment of oil press-
if it is cl,ogged.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-
valve
value, readjust the line pressure, or, if neces-
ures@,@, 4 and
6sary, 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 previous assembly.
wed.Looseness of valve body tighten-d.Tighten the valve body tightening bolt and
ing part installation bolt.
e.Improper oil pump dischangee.Check the side clearance of the oil pump gear;
pressure replace the oil pump assembly if necessary.
2. Improper reducing
a.Improper line pressurea.Check the @ kickdown
brake pressure /line
pressure pressure); 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.
cuitc.Improper adjustment of the re-c.Measure the @ reducing pressure; if it is not
ducing
pressure the 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 part installation bolt.
3. Improper
kick-a.Malfunction of the D-ring or seal a. Disassemble the kickdown
servo and check
down brake press-
ring of the sleeve or kickdown
whether the seal ring or D-ring is damaged.
ure 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 part installation bolt.
c.Functional malfunction of thec.Replace the valve body assembly.
valve body assembly
1. Improper front clutch pressurea.Malfunction of the D-ring or seal a. Disassemble the kickdown
servo and check
ring of the sleeve or kickdown
whether 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 part installation 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
Refer to the figure on the next damage of the D-ring. If there is any wear or
page.) damage, replace the piston, retainer, D-ring and/or
seal ring.
i. Improper end
clutch pressurea.Malfunction of a D-ring @or oila.Disassemble the end clutch and check the oil
seal 0.0 of the end clutch or
O-ring 8 of the pipe (Refer to seal, D-ring of the piston, seal ring of the
the following 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 part installation bolt.
c.Functional malfunction of thec.Replace the valve body assembly.valve body assembly
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