1991 MITSUBISHI ECLIPSE clutch

g-134 ENGINE <2.0L DOHC Engine>- Crankshaft, Flywheel and Drive Plate
3EN301CRANKSHAFT REAR OIL SEAL
(1) Check oil seal lip for wear and damage.
(2) Check rubber for deterioration or hardening.
(3) Check oil seal case for cracks and damage.
RING GEAR (Engine with a manual transaxle)
Check teeth of ring gear for wear and damage. If necessary,
replace the ring gear.
If the ring gear teeth are worn or damaged, also check the
starter motor pinion.
To remove the ring gear, strike the ring gear at several points
on its outer circumference. The ring gear cannot be removed ifit is heated.
To install the ring gear, heat the ring gear to
300°C (572°F) for
shrink fit.
FLYWHEEL (Engine with a manual transaxle)
(1) Check the clutch disc friction surface for ridge wear,
streaks, and seizure. If necessary, replace flywheel.
(2) If the
runout of flywheel exceeds the limit, replace.++.Limit: 0.13 mm
(.0051 in.)
DRIVE PLATE (Engine with an automatic transaxle)
Replace deformed, damaged, or cracked drive plates.
SERVICE POINTS OF REASSEMBLYNWUGAB
14. INSTALLATION OF CRANKSHAFT BEARING (UPPER)
Install the upper crankshaft bearing to the cylinder block.
There is an oil groove in the upper crankshaft bearing.
There is no difference between upper and lower bearings
for the center (with flange).
12. INSTALLATION OF CRANKSHAFT BEARING (LOWER)
Install the lower crankshaft bearing (with no oil groove;
there is no difference for center) to each bearing cap and
apply engine oil to bearing surfaces.

AUTO-CRUISE CONTROL SYSTEM - Snecifications14-109
AUTO-CRUISE CONTROL SYSTEM
.-4.
SPECIFICATIONS
GENERAL SPECIFICATIONSNUCA-B
ItemsSpecifications
Auto-cruise control switch
Rated load AMAIN3.OkO.5
SET0.2fO.l
RESUME0.2kO.l
Voltage drop V0.2 or less
Stop light switch
Rated load A0.1-0.9
Voltage drop (at rated load)V0.25 or less
Clutch switch
Rated load A0.005-l
Voltage drop (at rated load)V0.15 or less
Auto-cruise control unit
Range of speed controlkm/h (mph)40 (25)_+3 (1.81-145 (90)_+5 (3.1)
Auto-cruise control actuator
Drive systemVacuum type
Strokemm (in.)38-42 (1.5-I .7)
Auto-cruise vacuum pump
Rated load A0.4 or less
SERVICE SPECIFICATIONSItems
Accelerator cable playmm (in.)

4l-bThrottle
cable playmm (in.)
Auto-cruise cable playmm (in.)
Control valve, Release valve resistanceQ
Specifications
O-l (O-.04)
2-3 (.08-,121
1-2 (.04-.08)
1-2 (.04-.08)
50-60
TORQUE SPECIFICATIONSN14CGCItems
Nmftlbs.
Link protector4-63-4-.
Link assembly9-147-10
Auto-cruise vacuum pump4-63-4
Accelerator cable plate4-63-4

AUTO-CRUISE CONTROL SYSTEM - Troubleshooting144w
Auto-cruise control system cannot be set.
NOTEThis chart is to be used, then, for troubleshooting if it is not
possible to use the self-diagnosis for checking.
Prepare to conduct input check.
)( (Refer to P.14lrWhere codes
No.21, 22, 23, 25 and 26disolaved when, with the vehicle stationary,the’ input check codes were recalled?
‘#
No-8
cArc-3 ttie results of all inout checks normals?
L--y--
I
Check resultsProbable causeRemedy
ii”,:” chart
Code 21 remains even though SETSET switch ON mal-Replace the controlNo.2switch
is set to OFF.functionswitch
SET switch input lineRepair the harnessshort-circuit
:-Code 22 remains even though RE-SUME switch is set to OFF.RESUME switch ONmalfunction
RESUME switch input
line short-circuit
Replace the controlswitch
Repair the harnessNo.3
Code 23 is not canceled even if theMalfunction of stopReplace stop lightNo.6stop light switch
is turned OFF bylight switch circuit.switch or repair har-
releasing the brake pedal.ness.
Code 25 does not disappear, andMalfunction of theCheck or repair theNo.4
code 24 does not appear, evenvehicle-speed sensorvehicle speed sensor
though vehicle speed reaches appro-circuit (damaged or dis-circuit.ximately
40 km/h (25 mph) or higher.connected wiring, orshort-circuit)
Code 26 is not canceled even if theclutch switch is turned OFF by re-leasing the clutch pedal.Malfunction of clutch
switch circuit.
Replace clutch switchNo.8or repair harness.
Code 26 is not canceled even if theMalfunction of inhibitorReplace inhibitor switchNo. 7select lever is moved to anything butswitch circuit.or repair harness.
N, P .
the auto-cruise vacuum pump circuit.NOTE_. . . e_,1 (Go to check chart No.5.)IIf the results of the check oT tne auro-crutse vacuum pump
circuit (check chart No. 5) and of the auto-cruise vacuum pump
and actuator itself (P.14-138.) reveal no abnormal
condition,replace
the electronic control unit (ECU).
-.

14-112AUTO-CRUISE CONTROL SYSTEM - Troubleshootina
Trouble symptomProbable causeCheck chart No.Remedy
l The set vehicle speed variesMalfunction of the vehi-No.4Repair the vehicle speec
greatly upward or downward.cle speed sensor circuitsensor system, or re-l “Hunching”
(repeated alternatingplace the part.
acceleration and deceleration)Malfunction of the
occurs after setting is made.speedometer cable orspeedometer drive gearAuto-cruise
vacuumNo.5Repair the auto-cruise
pump circuit poor con-vacuum pump, ortactreplace the part.Malfunction of the
auto-
cruise vacuum pumpMalfunction of the
ECU-Replace the ECU.
The auto-cruise control system is notDamaged or discon-If the input check codeRepair the harness or
canceled when the brake pedal isnetted wiring of theNo. 23 indicates a mal-replace the stop light
depressed.stop light switch inputfunction. No. 6switch.circuit; brake switch (forauto-cruise control) mal-function (short-circuit)Auto-cruise
vacuumNo. 5Repair the harness or
pump drive circuit short-replace the auto-cruisecircuitvacuum pump.Malfunction of the
ECU-Replace the ECU.
The auto-cruise control system is notDamaged or discon-If the input check codeRepair the harness, or
canceled when the clutch pedal isnetted wiring of clutchNo. 26 indicates a mal-repair or replace the
depressed. (vehicles with a manualswitch input circuitfunction. No. 8clutch switch.
transaxle)(It is canceled, however, when theClutch switch improper
brake pedal is depressed.)installation (won’tswitch ON)Malfunction of the
ECU-Replace the ECU.
The auto-cruise control system is notDamaged or discon-If the input check codeRepair the harness, orcanceled when the shift lever isnetted wiring of inhibi-No. 26 indicates a mal-repair or replace the in-
moved to the “N” position. (vehiclestor switch input circuitfunction. No.7hibitor switch.llvith an automatic transaxle)
[It is canceled, however, when theImproper adjustment of
Drake pedal is depressed.)inhibitor switchMalfunction of the
ECU-Replace the ECU.
Cannot decelerate by using the SETTemporary damaged orNo. 2Repair the harness orswitchdisconnected wiring ofreplace the SET switch.SET switch input circuitAuto-cruise
vacuumNo.5Repair the harness orpump circuit poor con-replace the auto-cruisetactvacuum pump andactuator.Malfunction of the auto-cruise vacuum pump
and actuator (includingclogging of negativepressure passage)Malfunction of the
ECU-Replace the ECU.

.z
c-AUTO-CRUISE CONTROL SYSTEM
- Tr6ubleshootina
Trouble symptom
Cannot accelerate or resume speed
by using the RESUME switch.
Probable cause
Damaged or discon-netted wiring, or short-circuit, of
RESUMEswitch input circuit
Remedy .’ ’-c liiCheck chart No.,;+ >,, a”:; : :
9 . /~ A%No.3.Repair theharness‘&
replace the RESUMEswitch.Auto-cruise
vacuumNo. 5Repair the harness orpump circuit poor con-replace the auto-cruisetact
vacuum,pump andactuator.Malfunction of the auto-cruise vacuum pumpand actuator (includingair leak from negativepressure passage)Malfunction of the
ECU.-Replace the ECU.
Auto-cruise control system can beMalfunction of theNo.4Repair the vehicle-set while
traveling at a vehicle speedvehicle-speed sensorspeed sensor system,
of less than 40 km/h (25 mph), orcircuitor replace the part.there
is no automatic cancellation atthat
speed.Malfunction of the‘I,speedometer cable orthe speedometer drive6 i
gear
The indicator light of combination
meter does not illuminate.
(But auto-cruise control system is
normal.)Malfunction
of control function by
ON/OFF switching of ELC 4 A/T
accelerator switch,Non-operation of damper clutch,
2nd gear hold, etc.)3verdrive
is not canceled during
‘ixed speed driving.
10 shift to overdrive during manual
driving. Malfunction of the
ECU-Replace the ECU.
Damaged or discon--Repair the harness or
netted bulb of indicatorreplace the bulb.light
Harness damaged ordisconnected
‘._,.Malfunction of circuit
re-No. 9Repair the harness or
lated to acceleratorreplace the part.switch
OFF functionMalfunction of the
ECUMalfunction of circuit
re-No. 10Repair the harness or
lated to overdrive can-replace the part.
cellation, or malfunction
of ECU

14-118AUTO-CRUISE CONTROL SYSTEM - Troubleshooting
8. CHECKING THE CLUTCH SWITCH CIRCUIT
Auto-cruisecontrolunit9
2ClutchswitchOFF ON
1m11Junction
blockI
13AO370Description of operation
If the clutch pedal is pressed wht driving at a constant speed,
the clutch switch is turned ON and a cancel signal is input to the
control unit and the determined driving speed is canceled
because current flows to the clutch, switch junction block from
the control unit and to ground.Troubleshooting hint
ECU terminal voltage
TerminalSignal
No.
1Clutch switch
t--l--II
ConditionsTerminalvoltage
When the clutch
pedal is depressed.
When the clutchpedal is not de-
pressed.
9. CHECKING THE CIRCUITS RELATED TO THE ACCELERATOR SWITCH OFF FUNCTION
Ignition switchm
& Accel-/Description of operation
The accelerator switch is a switch that detects the operationalstatus of the accelerator pedal; it is one of the sensors of theautomatic, transaxle.Because the status of the accelerator pedal during constant-speed driving is non-operational, the ground circuit (transistorTr2) of the accelerator switch is switched OFF only during
constant-speed driving in order not to interfere wtth the function
of the automatic transaxle.Troubleshooting hint
ECU terminal voltage
TerminalNo.SignalConditionsTerminalvoltaoe
’ 3Control unitAt all times
power supply
9Accelerator
When the accel-ovswitcherator pedal is
depressed.
When the accel-Systemerator pedal is not
depressed.voltage
\lOTEJC: Indicates ON at all time.
13AO3711 Not in operation ) OFF 1 ON (

14-124AUTO-CRUISE CONTROL SYSTEM - Troubleshooting
INPUT CHECK TABLE
CheckInput operationiI!eDisplay patterns (output codes)Check results
No.(use with voltmeter)
1SET switch ON21X:Gayitch circuit
2RESUME switch ON2212vRESUME switch cir-cuit
normalov
3Stop light switch ON (brake23
pedal depressed)
;;pl;yht switch
4Driving at approximately to 4024When both No. 4
km/h (25 mph) or higherand No. 5 can be
co,nfirmed, vehicle-.speed sensor circuit
5Driving at less than approx-2512vnormal.
imately 40 km/h (25 mph) or
stopped
ov
61. Clutch switch ON (clutch26Clutch switch inhibi-
pedal depressed) tor switch normal
2. Inhibitor switch ON (shift12vlever to “N” or “P” range)ov
-aIT>
7Throttle position sensor output28
voltage over 1.5V (when theThrottle positionsensor normal
accelerator pedal is pressedmore than half way)
?Idle switch OFF (accelerator29Idle switch normal
pedal depressed)
NOTE
1.Each code will be displayed in an order ofpriority beginning from No. 1.
If there is no display, it is possible that
there is a malfunction of the ECU power-
supply circuit or the SET and/or RESUMEswitch, so check according to check
charts
1,2 and 3.
2. Continue each input operation until the
output code is emitted.
If no output codes are emitted for inputs
even though the display pattern is repe-
ated two or more times, there is a
malfunction of the switch sensor.
3.When each input operation is performed and
the signals for the conditions are received by
the computer, each output code will be
repeatedly displayed in the sequence of
priority for as long as that signal continues.
4.If, during the display of output codes, the
input operation is canceled (if, for example,
the SET switch is set from ON to OFF), the
code will be displayed for one cycle of the
display, but will not be displayed during the
next cycle.
This makes it possible, therefore, to check
the OFF condition (existence of not of a
short-circuit of the input line or the switch).

AUTO-CRUISE CONTROL SYSTEM - Troubleshooting
AUTO-CRUISE CONTROL RELATED HARNESSES

1? 3
10 11
Ground Point
--
, ’
112 I$ ii 15r is i72OAO402
1. Idle switch <2.0L DOHC engine>
2. Motor position sensor (Idle switch) engine’>3. Auto-cruise control vacuum pump4. Throttle position sensor5. Starter motor6. Inhibitor switch 7. Auto-cruise control unit8.Junction block9.Self-diagnosis connector10.Clutch switch
11. Stop light switch12.Ignition switch
13.Column switch14. Accelerator switch 15. Power/Economy changeover switch
16. Overdrive switch 17. MPI control unit
18. 4Aff control unit
NOTERefer to P.14-126 for details about the mounting positicjkof
the auto-cruise control unit, etc.Junction Block
NoconnectionFront side
,-To engineroom
To instrumentRear side
)To bodywiringharness