1990 MITSUBISHI SPYDER clutch

AUTOMATIC TRANSAXLE
(TURBO) AND ENGINE> , .
Procedure ConditionsOperationJudgement valueInspection item Inspectionre
page if there is anI
abnormality
Selector EngineData list No. 27Shift control
lever
solenoid valve
Nos.
(1) Idling (vehicle83 Shift controltion:stopped)
Overdrive(2) Driving at
A (SCSV-A) solenoid valve A
system
OFF10 km/h (6(3) 3
(4) 2Shift control(3) Driving atCode Nos. solenoid valve 84 Shift control
constant speed (SCSV-B) solenoid valve of 50 km/h (31
mph) (20 system
or more)(4) Driving atData list No. 21Code Nos.
switch servo
switch system
mph) with(3)selector lever in
2 range
(4)
(5) Driving at Data list No. 38Vehicle speed Vehicle speed
(1) 0 km/hsensorsensor system
mph) with
(2) 10 km/h
selector lever in (3) 50 range (4) 40
Selector Engine Data list No. 31leverPulse generator Code Nos.
tion:(1) Idling (vehicle(3) rpmA (PG-A)
Pulse generator A
stopped) system
Overdrive(2) Driving at
OFF10 km/h (6 Data list No. 32Pulse generator Code Nos.
(3) Driving at(3) rpm ( P G - B )
Pulse generator
constant speedof 50 km/h (31 Data list No. 47
Torque 47 48,mph) (20 se-
er clutch (3) rpm49, Torque
clutch
constant speed
of 40 km/h (25
mph) with Data list No. 49 lever in TorqueCode Nos.
er clutch Torque
(5) Driving at(5)converter clutch
constant speed
solenoid
of 70 km/h (43
mph) withselector lever in For (3) and MalfunctionPoor acceleration
range
acceleration should be while drivingsmooth with no
abnormal vibration.
Vibration
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NOTE
Tests marked with
should be carried out on a road that is as straigh t and level as possible.

AUTOMATIC TRANSAXLE ENGINE
(TURBO) AND
ENGINE> Troubleshooting
Code No. Pulse generator A system
[Comment]l Malfunction of pulse generator A If there is no pulse generator A output at an outpu t shaft speed of 1,500 or above, therelMalfunction of connectoris an open circuit in pulse generator A and diagnos tic trouble code No. 31 is output. In addition,lMalfunction of end clutch if diagnosis code No. 31 is output 4. times within 10 seconds, there is an open circuit in pulselMalfunction of TCM
generator A, fail-safe code No. 81 is output and th e vehicle is locked in gear (D) or l Noise generated
gear (2, L) as a fail-safe measure.
Refer to Automatic
P u l s e g e n e r a t o r - (Refer to Replace
OK
Measure output from pulse
generator connector A-l 04 (using an
oscilloscope).l sure at PG-A side.
l Engine: 1,000 [approx. 30 19 mph)]l range
lVoltage between terminals (1) and
OK: The waveform shown belowshould be output, and the am-plitude should be 1.0 or
more. (Refer to
There should be no noise in
the output waveform.
I
NGNG R e p a i rtion
Check trouble
Replace the end clutch retainer I
Eliminate the source of noise.OK
Repair
OK
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Check trouble svmotom.
NG
harness between pulse NG Repair
erator A and TCM connectors.
OK
Replace the TCM.
2
1
0
- 1
- 2 0
1020

AUTOMATIC TRANSAXLE ENGINE
(TURBO) AND
ENGINE> Troubleshootina
Code No. Pressure control solenoid valve (PCSV)
system
[Comment]If the resistance value of the pressure control sol enoid valve is high, there is an open circuit
in the pressure control solenoid valve and diagnost ic trouble code No. 45 is output. If the
resistance value is low, there is a short circuit in the pressure control solenoid valve and diagnosti ctrouble code No. 46 is output. In addition, if diagnostic trouble code No. 45 or 46 is output
4 times, there is an open or short circuit in the p ressure control solenoid valve, fail-safe code
No. 85 is output and the vehicle is locked in
gear (D) or gear (2, L) as a fail-safemeasure.
Probable cause
l Malfunction of control solenoid valve
l Malfunction of connector
l Malfunction of TCM
check (Refer to
NG Replace
OK
Check the following connectors: .
OK
N G Repair
Check the harness wire between con- NG
of TCM and PCSV.I
OK
Replace the pressure control solenoid
valve (PCSV) with a new component. Check trouble symptom.NG
Replace the TCM.
Code No. Torque converter clutch solenoid
system
[Comment]
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If the resistance value of the torque converter clu
tch solenoid is high, there is an open circuit
in the torque converter clutch solenoid and diagnos tic trouble code No. 47 is output. If the
resistance value is low, there is a short circuit i n the torque converter clutch solenoid and
diagnostic trouble code No. 48 is output. In additi on, if torque converter clutch solenoid
duty continues at 100% for 4 seconds or more, there is an abnormality in the torque converter
clutch control system and diagnostic trouble code N o. 49 is output. If the calculated slippage
amount (the result when the input shaft speed is su btracted from the engine speed) is 5
for ten seconds when the throttle position is 1.5 or higher and the output shaft speed is1,000 in the direct-coupled non-operating range, even th ough the torque converter clutchsolenoid is off, the torque converter clutch is stuck on and diagnostic trouble code No. 58
is output.
Torque converter clutch solenoid check
Check the following connectors: Repair
.
OK
NGCheck the harness wi of TCM and TCC solenoid Repair Probable cake
lMalfunction of torque converter clutch solenoidl
Malfunction of connector
l Malfunction of TCM
Replace(TCC) solenoid with a new component.Engine Stalling during shifting check

AUTOMATIC TRANSAXLE ENGINE
(TURBO) AND
ENGINE> Troubleshooting.
Code No. 1 st gear incorrect ratioProbable cause
[Comment]lIf the value resulting from dividing the PG-A outpu t (input shaft rotation speed) by the gearMalfunction of pulse generator A or lratio does not match the output (output shaft rotation speed) after gear is engaged,Malfunction of transfer gear
l of clutch diagnostic trouble code No. 51 is output. In additi on, if diagnostic trouble codes (Nos. l Malfunction of rear 51, 52, 53 and 54) are output 4 times, there is an incorrect gear ratio, fail-safe code No. 88 l
is output and the vehicle is locked in gear or gear (2, L) as a fail-safe measure.
Refer to Automatic Transaxle Overhaul
Yes
SCAN TOOL DTC
Is
diagnostic trouble code No. 31 Code Nos. 31, Pulse generator
A system check (Refer to
No
SCAN TOOL DTCYes Code Nos. 32, 82 Pulse generator
Is diagnostic trouble code No. 32 system check (Refer to output?
No
NG Pulse generator A and w i r e
OK ,
Measure output waveform from pulse generator connec
tor
(using anoscilloscope).l Disconnect the connector and measure at PG-A side.
l Engine: 1,000 [approx. 30 mph)]
l Selector lever position: range gear)
l Voltage between terminals (1) and (2) (PG-A output waveform)
OK: The waveform shown below should be output, and t he amplitude shouldbe 1.0 or more. (Refer to There should be no noise in output waveform.
l Voltage between terminals (3) and (4) output waveform)
OK: Thewaveformshownbelowshould
be 0.5 or more. (Refer to There should be no noise in the output waveform.
OK
.Check trouble symptom.
NG
Replace the transfer gear and
end clutch retainer.
I
Replace the rear clutch. I
2
1
0
- 1
- 2 0 10 20
1621126
Eliminate the source noise.
010
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AUTOMATIC TRANSAXLE ENGINE
(TURBO) AND
ENGINE> Troubleshooting
Code No. gear incorrect ratio c a u s e,
[Comment]lIf the value resulting from dividing the PG-A outpu t (input shaft rotation speed) by the lMalfunction of pulse generator A or gear ratio does not match the output (output shaft rotation speed) gear is engaged,Malfunction of transfer driven gearlMalfunction of end clutch retainer
diagnostic trouble code No. 52 is output. In additi on, if diagnostic trouble codes (Nos. lMalfunction of rear clutch51, 52, 53 and 54) are output 4 times, there is an
incorrect gear ratio, fail-safe code No. 86 lis output and the vehicle is locked in gear (D) or gear (2, L) as a fail-safe measure.lMalfunction of brake’
Refer to Automatic Overhaul
SCAN TOOL DTC
Yes
Is diagnostic trouble code No. 51Code Nos. 86 1 gear incorrectratio check (Refer to
No
Replace the brake.
Code No. gear incorrect ratio
[Comment]If the value resulting from dividing the PG-A outpu t (input shaft rotation speed) by the gear ratio does not match the shaft rotation after is
engaged, diagnostic trouble code No. output. In addition, if related codes (Nos. 51, 52, 53 and 54) are output 4 times, there is an incorrect gear ratio, fail-safe
code No. 86 is output and the vehicle is locked in gear (D) or gear (2, L) as a fail-safemeasure.
SCAN TOOL DTCYesCode Nos. 1 gear incorrectIs diagnostic trouble code No. 51 ratio check (Refer to output?
No
P r o b a b l e c a u s e
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Malfunction of pulse generator A or Malfunction of transfer Malfunction of end clutch retainer
Refer to Automatic
Code No. gear incorrect ratio Probable cause
[Comment]l Malfunction of pulse generator If the value resulting from dividing the PG-A outpu t (input shaft rotation speed) by the lMalfunction of connectorgear ratio does not match the output (output shaft rotation speed) after gear is engaged,lMalfunction of transfer driven gear
diagnostic trouble code No. 54 is output. In additi on, if related diagnostic trouble codes (Nos.
l Malfunction of end clutch retainer
51, 52, 53 and 54) are output 4 times, there is an incorrect ratio, fail-safe code No. 86 is .Malfunction of rear clutch
output and the vehicle is locked in
gear (D) or gear (2, L) as a fail-safe measure. . generated
l Malfunction of
brake
l Malfunction of end clutch
Replace the front clutch. I
Refer to Automatic Overhaul
Is
diagnostic trouble code No. 52 Code nos. gear incorrect
ratio check (Refer to
I Replace the end clutch. I

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 forward even if the lever is l
Malfunction of rear shifted from to 2 or range. In such cases, the cause is probably abnorm al line pressure,l Malfunction of one-way or a defective rear or one-way clutch.
l Malfunction of body
Refer to Automatic Transaxle Overhaul’
NG
Vehicle usually starts off but forwardmovement
sometimes becomes in or 2.
Yes
Hydraulic pressure test
(Refer to
l Check the rear clutch pressure
when shifting from to range.
S t a n d a r d
psi)
OK
Rear clutch system check lRemove the oil pan and valve body.l Pistons should operate and pres-
sure should also be maintained
when air is blown through the rear
clutch oil holes in the transaxle
case.
OK
body disassembly, cleaningand reassembly Pay particular attention to loos-
ening of bolts, and to damage,
chipping or slippage of O-rings,
valve intermediate plate andbody.lIf it is considered that the dam-age or chipping cannot be re-
paired, replace the valve body
assembly.
NG
moves forward in range.
Yes
Replace the one-way clutch.
Rear clutch check lCheck for burning of the facing,
defective piston seal rings and
interference between the end
plate and retainer.
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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 the lever is shifted
from to range. In such cases, the cause is abnormal pressure in the low reverse
brake or front clutch, or a defective low reverse b rake or front clutch.l
Abnormal low reverse brake pressurel Abnormalfront pressurel Malfunction of front l of low reverse of valve
Hydraulic pressure test
(Refer to
lMeasure the front clutch pressure
in range at Standard value: 2,240 (233-319 psi)
NG
Refer to Automatic Transaxle Overhaul
Hydraulic pressure test
(Refer to
l Measure the low reverse brakepressure in range at 2,500 Standard value: (233-319 psi) Front
lRemove the oil pan and body.l
Pistons operate and pres-
sure should also be maintained
when air is blown through the front oil holes in the c a s e .NGOK
NG. Front clutch and low reverse Low reverse brake system check
lRemove the oil pan and valvebody.l Pistons operate and
pressure should also be
maintained when air is blown
through the low reverse brake oil holes in the transaxle case.
OK
Valve body disassembly, and reassembly Pay attention to loos-
ening of bolts, and to damage,
chipping or
of O-rings, intermediate plate andbody.if it is considered that the dam-age or chipping cannot be re- paired, replace the valve body
assembly.
Probable cause
checklCheck for burning of the facing,defective piston seal rings andinterference between the end and retainer. O K
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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.
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