MITSUBISHI SPYDER 1990 Service Repair Manual

AUTOMATIC TRANSAXLE.
ENGINE. (NON-TURBO)> ,
Code Scan tool 20S w i t c h e d b a t t e r y
No..
General scan tool
I
A voltage is detected on any of the presssure switc hes before the relay is energized.l l o f E A T X r e l a y , or
connector between relay output
short-circuitedl Harness or connector between EATX output and TCM l o f
Measure at solenoid and pressure
switch assembly connector
l Disconnect the connector and
measure at the harness side.
l Voltage between
(5) andground.l Ignition switch: ON
OK: OV
OK
Measure at the TCM connector l Disconnect the connector and
measure at the harness side.
lVoltage between (49) andground.l Ignition switch: ON
O K : o v
OK
NG Check the wire between the
TCM and the EATX relay (Check short to power)
OK
R e p a i r
,
Replace the
and pressure switch assembly and
Check trouble symptom.
Check the harness wire between the
TCM and the EATX relayReplace the TCM
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34AUTOMATIC TRANSAXLE ENGINE (NON-TURBO)> Troubleshooting
Pressure switch circuit: OD
A mismatch has occurred between the shift condition and the pressure switch condition
(ON/OFF) while the vehicle is moving.
SCAN TOOL Data list
NG
22 Overdrive pressure switch l Engine: Stopped
l D i s c o n n e c t t h e E A T X r e l a y
connector and apply systemvoltage to harness-side connector
. O N
OK
Check the transmission fluid level.
OK
Replace solenoid and pressure switch
Check trouble symptom.
NG
Possible cause: Internal transaxle failure (Refer to
Adjust the
fluid level.
P r o b a b l e c a u s e
.
fluid level in transaxle
l Malfunction of pressure switch assembly
lHarness or connector between OD pressure
switch and TCM open or short-circuited
l
of TCM
l Internal transaxle problem
Check the harness wire between the
EATX relay and solenoid and pressureswitch assembly
(Check short to power)
NG Repair
Check the harness wire between sole-noid and pressure switch assembly and
Replace solenoid and pressure switch
assembly
Check trouble symptom.
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Replace the TCM

AUTOMATIC TRANSAXLE
ENGINE
Code Scan tool 22
No.
Pressure switch circuit:
scan tool,
A mismatch has occurred between the shift condition and the pressure switch condition(ON/OFF) while the vehicle is moving. l
MalfunctionlHarness or connector between 2-4 pressure
switch and TCM open or short-circuited
l Malfunction of TCM
Internal transaxle problem
Check the harness wire between the NG TOOL Data 21 2-4 pressure switchl Engine: Stopped
l Disconnect the EATX relay
connector
and apply system to harness-side connector
. O N
OK
Hydraulic pressure check
l Raise vehicle on
allowsfrontwheelstoturnlAttach pressure gauge the 2-4 clutch tap.lMove selector lever to the2 position. Increase throttle opening
to achieve an indicated
vehicle speed of 48 km/h(30 mph). Take a reading of theclutch pressure.OK: 1000(115-145 psi)
2. SCAN TOOL Data list 21 2-4 pressure switch
OK: ON
OK
Replace the TCM
Replace the TCM
Code Scan tool 23
Pressure switch circuit:
No.General scan
A mismatch has occurred between the shift condition and the pressure switch condition
(ON/OFF) while the vehicle is moving. l
Low/high fluid level in transaxle
l Malfunction of pressure switch
lHarness or connector between OD pressure
switch and TCM open or short-circuited
lHarness or connector between 2-4 pressure
s w i t c h a n d T C M
l of l
.. Carry out the inspection procedure for code No. 21. (Referto 134)l Carry out inspection procedure for code No. 22. (Refer
to
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36AUTOMATIC TRANSAXLE
ENGINE (NON-TURBO)> Troubleshooting
Code Scan tool 24Pressure switch cricuit: LRProbable cause
No.General scan tool
A mismatch has occurred between the shift condition
and the pressure switch conditionl
Low/high fluid level transaxle
(ON/OFF) while the vehicle is moving. l
Malfunction of switch l Harness or connector between pressure
switch and TCM open or short-circuited
l Malfunction of TCM
l Internal transaxle problem
SCAN TOOL
list
20 pressure switch
l Engine: Stopped
l D i s c o n n e c t t h e E A T X r e l a y
connector and apply systemvoltage to harness-side connector
terminal (8).
l Ignition switch: ON
OK: OFF
NG Check the harness wire between theEATX relay and solenoid and pressureswitch assembly
(Check short to power)
Hydraulic Possible causes:
l Raise vehicle on hoist lIncorrect transmission fluid levelallowsfrontwheelstoturn.l
Internal transaxle failure (Refer
l Attach oauae to to
l the Replace and pressure
l
Increase speed to1 5 0 01. Take a reading of theclutch pressure.O K : psi)
2. SCAN TOOL list
20 L-R pressure switch
OK: ON Replace the TCM
OK
INTERMITTENT MALFUNCTIONl
Study the DTC information (back-
ground, range of check, setting
condition).l Refer to INTRODUCTION How
to Cope with Intermittent Malfunc-
tion. OK
Check the harness N G Repait and pressure switch assembly andTCM (terminal (10))
(Check short to power)
OK
Check the following connector: .N G Repair
OK
Check trouble
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Replace solenoid and pressure switch
Check trouble symptom.
NG
Replace the TCM
Code Scan tool 25
Pressure switch circuit: Probable cause
No.General scan tool
A mismatch has occurred between the shift condition and the pressure switch conditionl
Low/high fluid level in transaxle
(ON/OFF) while the vehicle is moving. l
Malfunction of pressure switch assembly
l Harness or connector between OD pressure
switch and TCM open or
l Harness or connector between pressure
switch and TCM open or short-circuited
l Malfunction of TCM
Internal transaxle problem
l Carrv out the procedure for code No. 21. (Refer
to
l Carry out the inspection procedure for code No. 24. (Refer
to

AUTOMATIC TRANSAXLE.
ENGINE Troubleshooting
Code Scan tool 26Pressure switch circuit: P r o b a b l e
No. ,
General scan tool .
A mismatch has occurred between the shift condition and the pressure switch condition
(ON/OFF) while the vehicle is moving. l fluid level in l assembly l
Harness or connector between pressure
switch and open or lHarness or connector between pressure open or l Malfunction of TCM transaxle problem
l Carry out the inspection procedure for code No. 22. (Refer
to
l Carry out the inspection procedure for code No. 24. (Refer
to
Pressure switch circuit: ALL
A mismatch has occurred between the shift condition and the pressure switch condition
(ON/OFF) while the vehicle is moving. fluid level Malfunction of pressure switch assembly
Harness or connector between OD pressure
I n t e r n a l t r a n s a x l e
lCarry out the inspection procedure for code No. 21. (Refer
to.
l Carry out the inspection procedure for code No. 22. (Refer
to 135)l Carry out the inspection procedure for code No. 24. (ReferI
to
. ,
Revision

AUTOMATIC TRANSAXLE
ENGINE (NON-TURBO)> ‘Troubleshooting,
cause
Malfunction range lHarness or connector between transaxle rangesensor and open or short-circuited
lTransaxle range sensor ground open-circuitedl Malfunction of
Code Scan tool 28Check shifter signal
No.General scan tool
Case 1 Invalid code timer has expired (100 msec).
Case 2 Third occurrence of setting data error flag since start-up
SCAN TOOL Data list
26 Transaxle range sensor 43 l Ignition switch: ON
OK: Shift lever position
2, L: ONOtherthan OFF
NG
OK
SCAN TOOL Data list Check the transaxle range sensor Replace the transaxle range sensor 27 Transaxle range sensor 41.. . . I
OK:
(Refer to
Check the following connector:
l
INTERMITTENTl the DTC information Check the harness wire between the
transaxle ranae sensor and TCM
(Check
power)
ground. range of check, settingcondition).l
Refer to INTRODUCTION How
to Cope with Intermittent Malfunc-
tion.
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AUTOMATIC TRANSAXLE
ENGINE (NON-TURBO)> Troubleshooting
Code Scan tool Throttle position signal
No.General scan tool
l Throttle angle less than 6 degrees, or Throttle gre ater than 120.6 degrees.
l The engine must be running.
OKCheck that the engine lamp is on
- - R e f o r m P C M d i a g n o s t i c s . the enaine
c a u s e
l Malfunction of sensorlHarness or connector between sensor and TCM open or short-circuited
l or connector sensor output and TCM open or short-circuitedl Malfunction of l Malfunction of . .
I ,
O K :
00 Throttle position sensor
l Disconnect the connector Check the following connector:l Engine ground connectionl l Ignition switch: ONI ,
,OK: More than OKA b n o r m a l i t y(no diagnostic trouble
connector
Abnormality exists trouble codepresent)
To INSPECTION CHART FOR
TROUBLE CODES
(Refer to
Measure at TCM connector l Disconnect the connector and
measure at the harness side Check the following connector:
l Connector
disconnected
l Voltage between (52) and ground
l Ignition switch: ON
OK: More than
Check the harness wire between the
TCM and the throttle position sensor
Measure at TCM connector and Check the harness wire between the
throttle position connector TCM and the throttle sensor
l Disconnect the connector and
measure at the harness side.
l
Less than
OK
,
.
Check the following connector:
l Replace the TCM
NG
Repair
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AUTOMATIC TRANSAXLE
ENGINE (NON-TURBO)> Troubleshootihg
Code Scan tool 31Hydraulic pressure switch: ODProbable
No.General scan tool
Pressure switch falls to respond within specified time for given temperature range.
l Low/high fluid level in transaxle
l Malfunction of pressure switch assembly
l Internal transaxle problem
OKNGHydraulic pressure check Check the following Repair
l Measure the overdrive clutch pressure
l
l engine
l Disconnect the solenoid and pressure switchOK
assembly connector and apply system voltage
between terminals (6) (8).
WARNING: FRONT WHEELS MUST BE OFFReplace the solenoid and pressure switch bly.
THE GROUND BEFORE PRO-CEEDING.
NOTE: Step on the brake pedal so the wheels won’t rotate.
l Select lever: Increase the engine speed slightly.
S t a n d a r d
(75-95 psi)
every 3 seconds
Check the transmission fluid level.
NG
Repair
l Solenoid and pressure switch assembly
Internal transaxle failure. (Refer to
Code Scan tool 32 Hydraulic pressure switch: 2-4 Probable cause
No.General scan tool
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Pressure switch falls to respond within specified t
ime for given temperature range.l
Low/high fluid level in transaxle
l Malfunction of pressure switch assembly
l Internal transaxle problem
Hydraulic pressure check
l Measure the 2-4 clutch pressure
Start engine
following connector
WARNING: FRONT WHEELS MUST BE OFF THE GROUND BEFORE PRO-
CEEDING. on the brake pedal so that wheels
won’t rotate.
l Select lever:
l increase the engine speed slightly.
S t a n d a r d
(75-95 psi)
everv 3 seconds
NGOK
NG Repair
OK
the solenoid and pressure switch assem-
Check the transmission fluid level.
NG
Possible causes:
l Solenoid and pressure switch assembly
linternal transaxle failure. (Refer to

AUTOMATIC TRANSAXLE
ENGINE (NON-TURBO)> Troubleshooting
Code Scan tool 33Hydraulicpressureswitch:
No.General scan tool
Pressure switch falls to respond within specified t ime for given temperature range.
l Low/high fluid level in transaxle Malfunction Internal transaxle problem
,l Carry out the inspection procedure for code No. 31. (Refertol Carry out the inspection procedure for code No. 32. (Refer
to
Code Scan tool 35 Check level . Probable cause No.General scan tool
No pressure is present for any element.l fluid level in l
Malfunction of oil filter
l Missing O-ring
l Malfunction of transmission fluid cooler
Code Scan tool 38
Fault immediately after a shift Probable cause
No.General scan tool
Fault happened within 1.3 second of a shift (This code is not stored alone. It if
a speed error (codes through 58) is detected immediately after a l Internal transaxle problem
(Refer to Speed errors) I
Code
Scan tool 37 Solenoid switch valve latched in
No.General scan tool the LU position
Three unsuccessful attempts shift gear.
Probable
l
Internal transaxle problemlRefer to Inspection for diagnostic trouble
code. (Internal transaxle problem
Lock-up control out of rangeProbable cause
Electronically Modulated Converter Clutch (EMCC) op eration is inhibitedl L o w / h i g h f l u i d l e v e l i n I n t e r n a l p r o b l e m
checkNGI -..< .
l - Measure the torque converter clutch offcontrol valves.
l‘Use the scan tool to erase diagnostic troublecodes.l Drive the vehicle in overdrive until it is fully
warmed up.
lDrive in gear overdrive for a minimum of10 seconds.NOTEl The vehicle speed must be greater than 80 (50 mph).lThrottle must be open greater than 6 degrees.
Standard value: Less than 69 (10 psi)
ROAD TESTOK: Code 38 set. Check the transmission fluid level.OK
NG Repair
Replacethetorqueconverterandtransmissionfluid
cooler.
Possible cause:lInternal transaxle failure. (Refer to
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AUTOMATIC TRANSAXLE
ENGINE (NON-TURBO)> Troubleshooting
Code Scan tool 41Solenoid circuit error: Probable cause
No.General scan tool
A shift must not be in progress; an selector lever position, pressure switch, or watchdog
l of pressure switch assembly
test must not be in progress; no spike must be dete cted from the solenoid during the first
l Harness or connector between solenoidtest, or a pressure switch problem, or a speed prob lem. The code sets if the solenoid continuityand TCM open or short-circuited
test failed for the second time, or if there is eit her a pressure switch or speed data problem
l TCM ground open-circuited
and the solenoid continuity test failed for the fir st time.
l Malfunction of TCM
Measure at the TCM connector
lDisconnect the connector and
measure at the harness side.
lResistance value between and
switch assembly connector
ground.OK: Less than
NG
l Resistance value between (4) andground.OK: Less than
NG
Check the harness wire between theTCM and solenoid and pressure switch
assemblv.
Replace the solenoid and switch
Check trouble symptom.
N G
Replace the TCM
Measure at the TCM connector
and solenoid and pressure switch as-
sembly connector
l Disconnect the connector and
measure at the harness side.
l between (60)and (4)
OK: Less than
OK
Measure at EATX
and solenoid and pressure switch as-
sembly connector
l Disconnect the connector and
measure at the harness side.
lResistance value between (8)and (6).
OK: Less than
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Check the
Replace the TCM
OK
Replace the solenoid and pressure
s w i t c h a s s e m b l y .
TCM and solenoid and pressure switch
assembly.
NG Check the harness wire between the EATX Relay and solenoid pressure
switch assembly.