1990 MITSUBISHI SPYDER Service Repair Manual

remove seats start stop button bolt pattern gas tank size weight horn

Page 1041 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual AUTOMATIC TRANSAXLE
ENGINE (TURBO) AND ENGINE> Troubleshooting
INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS
INSPECTION PROCEDURE 1
l Communication with scan tool is not possibleProbabl

AUTOMATIC TRANSAXLE
ENGINE (TURBO) AND ENGINE> Troubleshooting
INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS
INSPECTION PROCEDURE 1
l Communication with scan tool is not possibleProbable cause
l M a l f u n c t i o n o f d i a g n o s i s l i n e communication with the scan tool is not possible, the cause is probably a defective diagnosisl Malfunction of TCM power supply line or the TCM is not functioning. l
Malfunction of TCM ground circuit
l Malfunction of TCM
is communication with other systems
possible using the scan tool?
Yes
Check the diagnosis line with scan tool.Repair, if necessary.
NG
lDisconnect the connector and mea-sure at the harness side.
l Voltages between terminals
(25) and ground
OK: Battery positive voltage
l Continuity between terminal
Check the following connectors:NG Repair
l
Replace the TCM.
.
Check the following connectors;
NG Repair
l
OK
the TCM and power supply. Repair,
l Check the harness wire betweenthe TCM and ground. Repair, if nec-
INSPECTION PROCEDURE 2
l Starting impossible (will not crank)
Probable cause
[Comment]l Malfunction of engine system
Starting is not possible when the selector lever is in or range.In such cases, the cause
l
Malfunction of torque converter
is probably a defective engine system, torque conve rter or oil pump.l
Malfunction of torque converter
l Malfunction of oil pump
Refer to Automatic Transaxle Overhaul
Engine system check
l Check the control system, ignition
system, fuel system and main
thing is normal.
l If there is an repair or
replace the engine
After completion
Torque converter check l Check to be sure that the torque
converter installation is not defec-
tive (inserted at an angle, etc.).
l
If there is an abnormality, carry out
repairs. However, if the aredamaged and repairs are not pos-
sible, replace the torque converter
assembly.
TSB Revision
After completionOil pump check l Check to be sure that there are noabnormalities such as oil pump Sei-zure, side or loosening of l If there is an abnormality, replace
the oil pump assembly.

Page 1042 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual AUTOMATIC TRANSAXLE
ENGINE (TURBO) AND ENGINE>
INSPECTION PROCEDURE 3
l Does not move forward
[Comment] Abnormal line pressure
When the engine is idling, the does not move for

Page 1043 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual AUTOMATIC TRANSAXLE
ENGINE (TURBO) AND ENGINE> Troubleshooting
INSPECTION PROCEDURE 4l Does not back-up
[Comment]When the engine is idling, the vehicle does not bac k-up even if

Page 1044 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual AUTOMATIC TRANSAXLE
ENGINE (TURBO) AND ENGINE> ,
INSPECTION PROCEDURE 5 .
lDoes not move (forward or reverse)
[Comment]
P r o b a b l e c a u s e ‘
When the engine is idling, the ve

AUTOMATIC TRANSAXLE
ENGINE (TURBO) AND ENGINE> ,
INSPECTION PROCEDURE 5 .
lDoes not move (forward or reverse)
[Comment]
P r o b a b l e c a u s e ‘
When the engine is idling, the vehicle does not mov e forward or in reverse even if the selectorl
Abnormal reducing pressure
l
lever is shifted from
to 2, or range. In such cases, the cause is probably abnorm alMalfunction of power train
l
reducing pressure, or a defective oil pump or power train.Malfunction of oil pump
l ‘ o f v a l v e b o d y
Refer to Automatic Transaxle Overhaul
O K
Hydraulic pressure test (Refer to .
l Measure the reducing pressure in range while the
engine is idling.
Standard value:
psi)
NG
Reducing pressure OK
Power train check lDisassemble the transaxle, check the condition of t he
and repair or replace if necessary.
Check to be sure that there are no abnormalities su ch
lIf it is considered that the damage or chipping can
not
be repaired, replace the valve body assembly.If there is an abnormality, replace the oil pump as sembly.
INSPECTION PROCEDURE 6
l Engine stalling during shifting
cause
[Comment] Malfunction of engine systemWhen the engine is idling, the engine stalls when t he selector lever is shifted from to l
2, or range. In such cases, the cause is probably a defe ctive engine system or damper lMalfunction of torque solenoid
clutch control solenoid valve. Malfunction of body l
Malfunction of torque converter
Refer to Automatic Transaxle Overhaul
Enaine check .
l the control system, ignition system, fuel system a nd main engine system, and confirm that everything is l If there is an abnormality, repair or replace the e ngine system.
After completion
Solenoid valve connector check
l Check to be sure that there is no water in the conn ector.
l Check to be sure that none of the terminals are sho
rted to each other.
After completion
Torque converter clutch solenoid check l Check to be sure that the valve is not sticking due to foreign materials packed inside solenoid.
l If there is an abnormality, replace the solenoid as sembly.
After completion
Transaxle cooling system check l Check for plugged cooler lines.
l Check for plugged oil cooler.
After completion
Valve body disassembly, cleaning and reassembly
l
l Pay particular attention to loosening of bolts, and
to damage, chipping or slippage of O-rings, valve intermediate plate and body.
If it is considered that the damage or chipping can not be repaired, replace the valve body assembly.
After completion
Torque converter check l Check to be sure that there is no sticking due to s eparation from the damper clutch.
l If there is an abnormality, replace the torque conv erter assembly.
Revision

Page 1045 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual AUTOMATIC TRANSAXLE
ENGINE (TURBO) AND ENGINE> Troubleshooting
INSPECTION PROCEDURE 7
lShocks when shifting from to and long lag timeProbable cause
[Comment]l Malfunction of rear

Page 1046 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual AUTOMATIC TRANSAXLE ,
E N G I N E ( T U R B O ) A N D E N G I N E >
INSPECTION PROCEDURE 8
lShocks when shifting from to and long lag time
[Comment]When the engine is idling, abnor

Page 1047 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual AUTOMATIC TRANSAXLE
INSPECTION PROCEDURE 9
lShocks when shifting from to D, to and long lag ,
time
[Comment]l Abnormal reducing pressure When the engine is idling, abnormal sho

Page 1048 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual AUTOMATIC TRANSAXLE
ENGINE (TURBO) AND ENGINE>
INSPECTION PROCEDURE 10.
l Shocks and flare shifts
[Comment]l Malfunction of servo switch
Shocks occur when driving due to upshiftin

AUTOMATIC TRANSAXLE
ENGINE (TURBO) AND ENGINE>
INSPECTION PROCEDURE 10.
l Shocks and flare shifts
[Comment]l Malfunction of servo switch
Shocks occur when driving due to upshifting or down shifting. In addition, the engine speed l
during shifting increases abnormally in comparison to normal shifting. In such cases, the cause lAbnormal reducing pressure
Malfunction of valve body
is probably abnormal reducing pressure or a defecti ve servo switch.
l Malfunction of closed throttle positron switchMalfunction of pressure control solenoid l Malfunction of clutches and brakes
SCAN
l 21 servo switchOK: Turns momentarily from ON to OFF when engineis in and the accelerator pedal is
Refer to Automatic Transaxle Overhaul
(Refer to servo adjustment (Refer to I
NG
depressed from the fully
closed position.
After completion
Closed
position switch check
l Check the closed throttle position
switch system according to inspec-tion procedures 17.
(Refer to
Valve body disassembly, cleaning andreassemblyl of bolts, and to damage, chipping
or slippage of valve inter-
mediate plate and body.
lIf it is considered that the damageor chipping cannot be repaired, re-place the valve body assembly.
TSB Revision
SCAN TOOL Test
l 01
lMeasure the servo brakeapplication pressure in range
while the engine is idling and the
fluid temperature is (178
Standard value:245 294 (35-42 psi)
[when PCSV DUTY is 50%)
Pressure control
valve checklCheck for sound of opera-tion in range while the
engine is idling.
lCheck to be sure that the
valve is not sticking due
to foreign materials being
clamped.lIf there is an abnormality,
replace the solenoid valve
assembly.
Clutch and brake
check
lCheck each end play, andif they exceed the stan-dard values, adjust so thatthey are within the stan-
dard values.

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