1989 MITSUBISHI GALANT wiring

22-WMANUAL TRANSAXLE
- Transaxle
rI8. INSTALLATION OF STARTER
Tighten with the lower starter installation the wiringharness clip bolt.
09POOl3
1 TSB Revision

23-24AUTOMATIC TRANSAXLE - Troubleshooting
TROUBLESHOOTING GUIDE
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Problem
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e:,
Damaged or worn gear or other rotating part.
or rnproperadjustment of the preload
n
8 Malfunction of
parklng
mechamsm
9 Cracked drive plate. or loose bolt
10 Worn InsIde
diameter of front clutch retainer
11Low flutd
level
X
-
1z12 Line
pressure too low (seal damaged, leakage, looseness, etc.)E:o 13Malfunctton of valve body (sticking valve. worktng cavity,
j$adjustment, etc )XX
I
:?I14‘cMalfunction of front clutch or poston
)_O15Malfunction of rear clutch or pistoni;;E16 Malfunction of klckdown band or piston
le17 Improper adjustment of kickdown servoj318Malfunction of low-reverse brake or piston-6s 19 O-ring of low-reverse brake circuit between valve
body and case not Installed
20 Malfunction of end clutch or
piston (check ball hole, other)
2,Malfunction of Park/Neutral positjon switch, damaged
or disconnected wiring, or improper adjustment
22
Malfunction of TPS. or improper adjustment
23 Pulse generator
(A) damaged or disconnectedwlnng. or short&cut^
NOTE: Qo indicates items of high priority during inspection.
Abbreviations: TPS = Throttle position sensor SCSV = Shift control solenoid valve

23-28AUTOMATIC TRANSAXLE - Troubleshooting ’
Fault Code Description for 1989 and 1990 model
FaultcodeFault code (for voltmeter)CauseRemedy
21Abnormal increase of TPS output
l Check the throttle position sen-
sor connector.
l Check the throttle position sen-
sor itself.
22
23
- l Adjust the throttle position sen-
Abnormal decrease of TPS outputsor.l Check the accelerator switch (No. 28: output or not).
l Check the throttle position sen- sor output circuit harness.
Incorrect adjustment of the
throttle-position sensor system
24Damaged or disconnected wiring
of the oil temperature sensor sys-
tern
l Check the oil temperature sen-
sor circuit harness.
l Check the oil temperature sen-
sor connector.
l Check the oil temperature sen-
sor itself.
25
26
Damaged or disconnected wiring l Check the kickdown
servo
of the kickdown
servo switch sys-
switch output circuit harness. tern.
or improper contact l Check the kickdown
servo
switch connector.
l Check the kickdown
servo
Short circuit of the kickdown
servo switch itself.
switch system
27Damaged or disconnected wiring
of the ignition pulse pick-up cable
system l Check the ignition pulse signal
line.
28Short circuit of the accelerator
switch system or improper adjust-
ment l Check the accelerator switch
output circuit harness.
l Check the accelerator switch
connector.
l Check the accelerator switch it-
self.
31
l Adjust the accelerator switch.
Malfunction of the microprocessor l Replace the control unit.
32First gear command during hrgh-speed drivingl Replace the control unit.
Damaged or disconnected wiring
of the pulse generator
B system l Check the pulse generator Boutput circuit harness.
l Check pulse generator B itself.
l Check the vehicle speed reed
switch (for chattering).
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AUTOMATIC TRANSAXLE - Troubleshootina
Fault
codeFault code (for voltmeter)CauseRemedy
41
UUU-LJ-I-
Damaged or disconnected wiring l Check the solenoid valve con-
of the shift control solenoid valve A nectar.
system l Check shift control solenoid
valve A itself. 42
Short circuit of the shift-control
solenoid valve A system l Check the shift control solenoid
valve A drive circuit harness
Damaged or disconnected wiring l Check the solenoid valve con-
of the shift control solenoid valve
B nectar.
system l Check shift control solenoid
valve
B itself.
Short circuit of the shift control
solenoid valve
B system l Check the shift control solenoid
valve
B drive circuit harness. 45
Damaged or disconnected wiringl Check the solenoid valve con-
of the pressure control solenord nectar.
uuuLnnnM-valve system
l Check the pressure control Sole-
noid valve itself. 46
l Check the pressure control sole-
Short circuit of the pressure control noid valve drive circuit harness.
solenoid valve system
Damaged or disconnected wiring
of the torque converter clutch con- trol
solenoid system
Short circuit of the damper clutch
control solenoid valve system l Check the solenoid valve con-
nector.
l Check the torque COnVeIter
clutch control solenoid itself.
l Check the torque converter clutch control solenoid drive cir-
cuit harness.
49Malfunction of the torque
con-vetter clutch system
l Check the torque
Converterclutch control solenoid drive cir-
cuit harness.
l Check the torque
COnVeITerclutch hydraulic pressure SYS-
tern.
l Check the torque COnVerter
clutch control solenoid itself.
l Replace the control unit.
51First gear non-synchronous l Check the pulse generator out-
put circuit harness.
l Check the pulse generator con-
nector.
l Check pulse generator A and
pulse generator
B themselves.
l Kickdown
brake slippage.
52Second gear non-synchronous l Check the pulse generator A
output circuit harness.
l Check the pulse generator A
connector.
l Check pulse generator A itself. 0
Kickdown brake slippage.
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23-32AUTOMATIC TRANSAXLE
- Troubleshooting
Jipproprrate transaxCode
No.Output pattern Description
Remedy
51First gear non-synchronous
uuuul n
52Second gear non-synchronous l Check the pulse generator A
and pulse generator
B con-
nectors
l Check pulse generator A and pulse generator
B them-
selves.
l Rear clutch slippage.
l Check the pulse generator A and pulse generator
B(AWD only) connectors.
l Check pulse generator A and pulse generator
B (AWD
only) themselves.
l Rear clutch slippage (AWD
only).
l Kickdown
brake slippage.
l Check the pulse generator A and pulse generator
B con-
nectors.
l Check the pulse generator A and pulse generator
B them-
selves.
l Front clutch slippage. l Rear clutch slippage.
l Check the pulse generator A and pulse generator
B(AWD only) connectors.
l Check pulse generator A and pulse generator
B (AWD
only) themselves.
l End clutch slippage (AWD only).
l Kickdown
brake slippage.
-
l TCM power supply inspection
l TCM ground inspection
l TCM replacement
AWC‘WC
0
0 0
0
0
UUUUJ-u-l-
53Third gear non-synchronous
0
0
UUUUuwL
54Iourth gear non-synchronous
0
i
Vormal
10 change as a constantoutput (or OV)Iefective transaxle control
nodule (TCM)
0
Fail Safe
Item for
1989 and 1990 model
ri Description
Output pattern (for voltmeter) Fail-safeNote
(relation to
fault code)
Code
No.
Malfunction of the
microprocessor3rd gear hold When code No. 31 is
generated 4th
time.
First gear command
during high speed
driving
3rd gear(D) or 2ndgear (2, L) hold When code No. 32 is
generated 4th
time.
n nnn
Damaged or discon-netted wiring of the
pulse generator Bsystem
3rd gear(D) or 2ndgear (2. L) hold When code No. 33 is
generated 4th
time.
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AUTOMATIC TRANSAXLE - Troubleshooting23-33
15
16
17
Output code
Output pattern (for voltmeter) Description
Damaged or discon-
nected
wiring, or
short circuit, of shift
control solenoid valve
A
Damaged or discon-
nected wiring, or
short circuit, of shift
control solenoid valve
B
Damaged or discon-
nected wiring, or
short circuit, of the
pressure control sole-
noid valve
Shift steps
non-synchronous
TFail-safe 3rd
gear hold 3rd gear hold
3rd gear(D) or 2ndgear (2, L) hold
3rd gear(D) or 2ndJear (2, L) hold
Note
(relation to
fault code)
When code No.
41 or
42 is generated 4th
time.
When code No. 43 or
44 is gnerated 4th
time.
When code No.45
or
46 is generated 4th
time.
flhen either codeNo. 51,52 53 or 54 isgenerated 4th
time.
Fail Safe
Item for 1990.5, 1991, 1992 and 1993 modelI
pproprlate transaxle Code Output patternNote
Description Fail-safe
(relation to
IWD FWD No.fault code)
81Damaged or disconnected wir- 3rd
gear(D) or 2nd31
0 -ing of the pulse generator A
gear (2, L) hold
82Damaged or disconnected wir- 3rd
gear (D) or 2nd32
0 0;ng of the pulse generator Bgear (2, L) hold
83Damaged or disconnected wir-
3rd
gear hold 41.42
0 0
ming, or short circuit, of shaftcontrol solenoid valve A
84Damaged or disconnected wir- 3rd
gear hold43,44
0 0m
ing, or short circuit, of shift
control solenoid valve B
85
Damaged or disconnected wir- 3rd
gear(D) or 2nd
45.46
0 0ming, or short crrcurt, of tne
gear (2. L) hold
pressure control solenord
valve
0 0 Shift
steps
non-synchronous 3rd
gear
(D) or 2nd51,52,53.gear (2, L) hold
54
No change as a constant Defective transaxle control Fixed for 3rd
-
0 0 -output (or OV)module (TCM)
speed
ITSB Revision

23-44AUTOMATIC TRANSAXLE - Troubleshooting
INSPECTION OF ELECTRONIC CONTROL SYSTEM COMPONENTS1. Wiring Based on the wiring diagram,
improper connection of
check whether the continuity and connector, damaged or
disconnected harness,
grounding of each harness IS OK. or incorrect wiring con-4
nection.
cContinuity> 4
4
Reconnect the connec-
I
Normal
Itor; repair or replace the
harness.
2. Oil-temperature
sensortemperature and check theresist-ante between the terminals 1 and2 (FWD),1and2 or 2 and 3 Damaged
or disconnected
Replace the oil-
temperature sensor
FWD (1993 model)
TFA0821
AWD (Up to 1992 model) 1
1. Low temperature side
~
2. Ground
3. High temperature side
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AlJTCMVlATlC TRANSAXLE - Troubleshooting23-45
3. Throttle-position sensor
UPS)
Damaged or discon-netted wiring
TPS terminal
SOHC Engine (1989 model)(3.5-6.5 kQ/20”C
(68°F)1I
SOHC Engine
(From 1990 model)
DOHC Engine
TFA0033 1. power
2. outpur.,
terminals 2 and 3 (SOHC Engine
1989 model) 4 and 2 (SOHC
Engine
_._ From 1990 model,
DOHC Engine) with the engine
idling after throttle-valve open-
ina warm-up.
Resistance: approx. 0.4
kQZ20”C
(,6,, , )
3. closed throttle position switch
W’D)4. ground \
Check for changes of the resist-
ance between terminals 2 and 3
(SOHC Engine
,._ 1989 model) 4
and 2 (SOHC Engine From
1990 model, DOHC Engine)
when the throttle valve is oper-
ated from the idling position to
the fully open position.
I
Changes of the resistance con-
tinuous and smooth.
Normal
4. Pulse generator
AorB
Check the resistance between
terminals 1 and 2 or 3 and 4.
Pulse generator terminals.
215-275
Q/20% (68°F)I
1-2: pulse
generator A3-4: pulse
generator B
4
Normal1
1750338 Improper adjustment
I
I
Readjust the TPS in-stallation.
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I
Replace the pulsegenerator.I