1990 MITSUBISHI SPYDER check engine

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.

AUTOMATIC TRANSAXLE
ENGINE
Code Scan tool 43Solenoid circuit error: Probable cause
No.General scan tool
A shift must not be in progress; an selector lever position, pressure switch, or watchdog
test must not be in progress: no spike must be dete cted from the solenoid during the firstl of pressure ‘assemblylHarness or between OD test, or a pressure switch problem, or a speed prob
lem. The code sets if the solenoid continuitytest failed for the second time, or if there is either a pressure switch or speed data problem and TCM open or l
TCM ground open-circuited
and the solenoid continuity test failed for the fir st time.
l Malfunction of TCM
OK Check the following connector:lDisconnect the connector andDisconnect the connector andl
OK Resistance value between (20) andNGReplace the solenoid and pressureswitch assembly.
Check the wire between the
Replace the TCM
Measure at the TCM connector l Disconnect the connector and
measure at the harness side.
lResistance value between and
OK: 1
NG Measure at the TCM connector Check the harness the
l Disconnect the connector and TCM and ground.
measure at the harness side.
lResistance value between and ground.
OK: Less than
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N GOK
Check the following connector:
l NG Repair
OK
Replace the TCM
NGMeasure at the TCM connector and solenoid and pressure switch sembly connector l Disconnect the connector and
Check the harness wire between theTCM and solenoid and pressure switch
assembly.
Measure at EATX Relay connector
and solenoid and pressure switch EATX Relay and solenoidpressuresembly connector l Disconnect the connector and
measure at the harness side.
lResistance value between (8)and (6).
OK: Less than
OK
Replace the solenoid and pressure
s w i t c h a s s e m b l y .

AUTOMATIC TRANSAXLE , .
ENGINE, (NON-TURBO)>
Solenoid circuit error:
A shift must not be an selector lever position, pressure switch, or watchdog
test must not be in progress; no spike must be dete cted from the solenoid during the
test, or a pressure switch problem, or a speed problem. The code sets if the solenoid continuitytest failed for the second time, or if there is either a pressure switch or speed data and the solenoid continuity test failed for the fir st time.Probable
,
Malfunction of l or connector between UD a n d T C M l
TCM ground open-circuitedl Malfunction of TCM
Measure at the TCM connector NG.
l Disconnect the connector and
measure at the harness side.
lResistance value between (19) and
around.
Less than
OK
Measure at the TCM connector
value between (19) and
Replace the switch assembly.
Check trouble symptom.
.
Replace the TCM
..
Measure at the TCM Measure at the TCM connector NG the harness wire between TCM and ground.
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Check the following connector:NG Repair
Replace the TCM
NGMeasure at the TCM connector and solenoid and pressure switch sembly connector l Disconnect the connector and
measure at the harness side.
l between (19)and (7). Check the harness wire between the
TCM and solenoid and pressure stitch
assembly.
OK: Less than
NG Check the harness wire between theand solenoid and switchE A T X a n d s o l e n o i d p r e s s u r esembly connector l Disconnect the connector and
measure at the harness side. switch
lResistance value between (8)
Replace the solenoid and pressureswitch assembly.

AUTOMATIC TRANSAXLE
ENGINE (NON-TURBO)> Troubleshooting
Code Scan tool 46UD Hydraulic circuit failure P r o b a b l e c a u s e
No.General scan tool
A 3-4 shift must be in progress, and the UD flag must be set (temperature must not be
l I n t e r n a l t r a n s a x l e p r o b l e m cold). The code sets concurrently with the third co nsecutive 3-4 shift abort if the fault counter is greater than three.
SCAN TOOL Data list
51
clutch volume index
52 2-4 clutch volume index
53 OD clutch volume index
54 UD clutch volume index
l Ignition switch: ON
Selector lever: OK: 51 (LR)
35 85
52 (2-4) 20 77
53 (OD)
75 150
54 (UD)
24 70
NG
l Internal transaxle (Refer to
OK
.
Refer to INSPECTION MATRIX FOR
transaxle problem) (Refer to
Code Scan tool 47 Solenoid switch valve latched in
Probable cause
No.General scan toolthe position
pressure is high for second time. l
Internal probleml lnspectlon’matrlxfoidiagnostictroublecode. transaxle problem)
Code Scan tool 48
No.General scan tool TRD link communication error
The code sets when:
There is an incorrect response from the power train control module via the CCD bus
acknowledging request for torque management test du ring idle.
or when: Event dependent on two sequential request for torqu e managed shift without correct
response from
control module on CCD bus acknowledging that torqu e
management is in process.
Check the throttle position sensor.
(Refer to GROUP ENGINE (NON-TURBO)> On-vehicle inspection of components)
Replace
OKNGCheck the CCD bus communication. Repair
(Refer to GROUP ENGINE (NON-TURBO)> Troubleshooting)
Check the following coNG Repair
Check trouble symptom.
OK
Check the harness wire between the PCM connector (63) and TCM connector (50).
Probable cause
l CCD bus communication problem Sticky throttle position sensor
. Open circuit or short-circuit in TRD link line
between TCM and PCM
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AUTOMATIC TRANSAXLE
ENGINE (NON-TURBO)> Troubleshooting
NGCheck the installation condition of the input speed sensor Repair
OK
NGCheck the installation Repair
NG Repair
l
OK
SCAN TOOL Data list lCarry out the inspection procedure for code No. 56.
44 Transaxle input speed
Check the transmission fluid level.
OK
SCAN TOOL Data list
44 Transaxle input speed l Raise the vehicle’s drive wheels off the ground
NG Repair
1. NG
The 2-4 clutch or clutch may be slipping.
l Start the engine and step on the brake so the wheel s won’t
rotate.1. Selector lever: 2
l the throttle to 30%
Caution Do not test any gear range for longer than 5 secon ds
l Use the scan tool ‘to monitor the input RPM.
Allow the engne to return to idle. OK: 0 rpm l
The reverse clutch or low/reverse clutch may be sli pping.
2. Select lever:
l Open the throttle to 30%
l Use the scan tool to monitor the input RPM.
Allow the enaine to return to idle.
OK: 0 rpm
Transaxle overhaul
l If code No. 50 is set:
Reverse clutch or
clutch may be slipping
l If code No. 51 is set:
UD clutch may be slipping
l If code No. 52 is set:
2-4 clutch or UD clutch may be slipping
l If code No. 53 is set:
OD clutch may be slipping
l If code No. 54 is set:
OD clutch may be slipping
OK
Check trouble symptom.
NG
Check the following connectors: Replace the TCM.
N G
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Repair

AUTOMATIC TRANSAXLE .
ENGINE (NON-TURBO)> Troubleshooting.
Speeds error: Input Speed
Sensor
There is an excessive change in input shaft speed in any gear.
A hard fault is considered to exist when the fault counter has matured to a value of 255.
An intermittent fault is considered present when th e fault counter is greater than or equal
to 6 and less than 255. No fault is considered to exist when the fault coun ter is less than 6.
Probable cause
l Malfunction of input speed lHarness or connector between output speed
sensor and open l M a l f u n c t i o n o f T C M
NGSCAN TOOL Data list lCarry out the inspection procedure
45 Transaxle output speed for code No. 57.
l Start the engine Selector OK: More than 0
OK
Measure at the TCM connector 1N G.
l Disconnect the connector and
measure at the harness side.
lResistance value between (12) and
ground.
OK: Less than
OK
Replace the input speed sensor
Measure at the TCM connector l Disconnect the connector and
measure at the harness side.
lResistance value between (12) and
OKCheck the following
l NG Repair
OK
O K :
NG
Replace the TCM
Check the harness wire between theand input speed sensor connector TCM and input speed sensor.
l Disconnect the connector and
measure at the harness side.
l between (12)and (2). ,
OK: Less than
OK NGNGMeasure at the TCM connector Repairand input speed sensor connector l l Disconnect the connector andmeasure at the harness side.NG
l between (53)and (1). Check the harness wire between theOK:
Less than TCM and input speed sensor.
OK
Measure at the TCM connector lDisconnect the connector and and then measure at the side.lResistance between (12) and
ground.
OK: Less than
NG Check the harness wire between the
TCM and input speed sensor.
Replace the input speed sensor
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