1991 MITSUBISHI ECLIPSE brake

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.

i-._AUTO-CRUISE CONTROL SYSTEM
- Troubltyshootf$6. CHECKING THE STOP LIGHT SWITCH CIRCUIT
Sub fusible link @
vacuum
w-vStop light
Auto-cruisecontrol unit13A0366Description of operation
When the brake pedal is depressed during constant-speedtravel, the stop light switch’s (NC) contacts for the cruise-control system open, with the result that the current to the
auto-cruise vacuum pump is interrupted, thus canceling the
constant-speed travel.
At the same time, moreover, the closing of the (NO) contacts
for the stop light results in the sending of the cancel signal to
the control unit, so that the auto-cruise vacuum pump current is
discontinued within the control unit, thereby canceling the
constant-speed travel.
The flow of current is from the sub fusible link
@I to fuse No. @
of the junction block, the stop light switch, and the control unit.Troubleshooting hint
ECU terminal voltage
TerminalSignal
No.
15
t-i-
Stop light
switch (load
side)pedal is depressed.
NOTENC: Indicates ON at all times. (For cruise contra!)NO: Indicates OFF at all times. (For stop light)l,_7. CHECKING THE INHIBITOR SWITCH CIRCUIT
Auto-
cruise
controlunit
Vehicles with x
theft-alarmIVehicles without5 theft-alarm systemsystem br
*Theft-’ nI Ialarm, ._I
starterz
relayQlOF: N A_ 3
Inhibitor
switchDescription of operation
The inhibitor switch also functions as the switch for the starter.If the selector lever is moved to the “N” position during
constant-speed travel, current flows to the control unit, inhibitorswitch, theft-alarm starter relay (vehicles with theft-alarm
system), starter motor, and to ground; the cancel signal istherefore input to the control unit, thus canceling the constant-speed travel.5Troubleshooting hint
ECU terminal voltage
TeE!alSignalConditionsTerminalvoltage
1Inhibitor switchAt all timesSystemvoltage
C.starter
motor13A036BNOTERefer to GROUP 8-Theft-alarm System forthe + (asterisk) on“Theft-alarm System”.

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).

14-136AUTO-CRUISE CONTROL SYSTEM- Service Adjustment Procedures03AQ250
rdjusting
03A0281
AUTO-CRUISE CONTROL CANCELLATION CHECK(1) Set the auto-cruise control.
”(2) Check to be sure that there is a return to ordinary driving,
and that the illumination of the auto-cruise indicator stops,
‘cwhen either of the operations below is performed.
@ The brake pedal is depressed.
@ The clutch pedal is depressed.
@ The shift lever is moved to the “N” or “P” range.
aIT>
@ The auto-cruise control main switch is switched OFF.
@ The ignition switch is turned to OFF.
CHECK OF RETURN TO THE SET SPEED BEFORE
CANCELLATION(1) Set the auto-cruise control.
(2) Check to be sure that the auto-cruise control is
cancelledwhen either of the operations below is performed.
@ The brake pedal is depressed.
@ The clutch pedal is depressed.
@I The shift lever is moved to the “N” range. (3) Turn the control switch to RESUME position and release
(RESUME switch
ONdOFF) while driving at a vehicle
speed of approximately 40 km/h (25 mph) or higher.
(4) After switching RESUME switch to OFF, check to be sure
that there is a return to the auto-cruise control speed before
it will be
cancelled and the vehicle will travel at the constant
speed.
A
ACCELERATOR CABLE, THROTTLE CABLE AND
AUTO-CRUISE CONTROL CABLE INSPECTION
AND ADJUSTMENT(1) Remove the link protector. (Refer to P.14140.)
(2) Check that there are no sharp bends and breaks in the
accelerator cable, throttle cable and auto-cruise control
cable.(3) Turn the ignition switch to the ON position (without starting
the engine) and leave in that condition for approximately 15
seconds.(4) Leave plenty of play in each cable and temporarily install
adjusting nuts A,
B, C and adjusting bolts D.

14-138AUTO-CRUISE CONTROL SYSTEM - Service Adjustment Procedures
07A0051
07AOO50
STOP LIGHT SWITCH/BRAKE SWITCH ItiSPECTlON
(1) Diconnect the connector.66(2) Check for continuity between the terminals of the switch.
_
When brake pedaldepressed.
When brake pedalnot depressed.
m :continuity
Brake switch
Stop light siwtch
142300
00
CLUTCH SWITCH INSPECTION(1) Disconnect the connector.
(2) Check to be sure that there is continuity between
connector terminals when the clutch pedal is depressed.
INHIBITOR SWITCH (“N” AND “P” POSITIONS)
INSPECTION(1) Disconnect the connector.
(2) Check to be sure that there is continuity between
Aconnector terminals 8 and 9 when the shift lever is moved
to the “N” or “P” range.
AUTO-CRUISE CONTROL VACUUM PUMP INSPECTION
Inspection of solenoid valves (control valve, release valve)(1) Remove the auto-cruise control vacuum pump connector.
(2) Measure the resistance value between terminals
0-0and between
0-0.
Standard value: 50-6OQ
(3) Check that the solenoid valve makes an operating noise
when battery voltage is impressed between terminals
0-0 and between 0-0.(4) If there is a malfunction of the solenoid valve, replace the
auto-cruise control vacuum pump assembly.
Motor inspection(1) Remove the auto-cruise control vacuum pump connector.
(2) Check that the motor revolves when battery voltage is
impressed between terminals @-@I.
@k

17-2REAR SUSPENSION - SpecificationsSPECIFICATIONS

GENERAL SPECIFICATIONS
LN17CAA
ItemsVehicles with 1.8L EngineVehicles with 2.0L DOHC
Engine
jSuspension system
3-link, torsion axle with coil spring type
Coil spring
Wire dia.
x O.D. x free length
mm (in.) 10.1 x 105.1 x 336.510.2 x 105.2 x 316.5
(40 x 4.14 x 13.25)(40 x 4.14 x 12.46)
[Coil spring identification color]
[Light Blue
x 11[Orange x 11Spring constant
N/mm
(Ibs./in.) 20 (112.0)23 (128.8)
Shock absorber
TypeHydraulic, cylindrical, double-acting type
Max. length
mm (in.) 495 (19.5)485 (19.1)
Min. length
mm (in.) 315 (12.4)315 (12.4)
Strokemm (in.) 180 (7.1)170 (6.7)Damping force [at 0.3 m/set. (0.9
ft./set.)]
ExpansionN (Ibs.)800 (176)
ContractionN (Ibs.)300 (66)
Wheel bearing
TypeUnit ball bearing
SERVICE SPECIFICATIONS
Items
Standard valueToe-in (Left-right difference)
Camber
LimitWheel bearing end play
Rear hub rotary-sliding resistance
Rear hub rotary-sliding torque
NOTEToe-in and camber cannot be adjusted.mm (in.)
mm (in.)
N (Ibs.)
Nm
(ftlbs.)
TORQUE SPECIFICATIONS
Specifications
0+3 (Of.1 18)
-45’
f 30’
0.01 (004) or less
31
(7) or less
1.8
(1.30) or lessNI’ICB-A
ItemsNmft.lbs.
Wheel bearing nut
Shock absorber upper mounting nut
Shock absorber lower mounting nut
Lateral rod mounting nut (body side)
Lateral rod mounting bolt (axle beam side)
Trailing arm mounting bolt
Piston rod tightening nut
Brake hose and tube bracket mounting bolt
Caliper assembly mounting nut
Rear speed sensor mounting bolt
200-260
40-50
80- 100
80-100
100-120
100-120
20-2517-26
50-609-14144-188
29-36
58-72
58-72
72-87
72-87
14-18
12-19
36-43
I7-10
Nl7CGA

Special Tools/Troubleshooting/REAR SUSPENSION - Service Adjujltment Procedures
SPECIAL TOOLN17DA.A
ToolNumberName1 Use1
L-451 4
Spring compressorRemoval and installation of the coil spring
bodyTROUBLESHOOTINGNI’IEA-A
Symptom
Squeaks or other
abnormal noiseProbable cause
Loose rear suspension installation bolts and nuts
Malfunction of shock absorber
Worn bushings
Remedy
Retighten
Replace
Poor rideExcessive tire inflation pressure
Malfunction of shock absorberWeak or broken springs
Adjust the pressure
Replace
Body tiltingWeak or deteriorated bushings
Weak or broken springs
Replace
SERVICE ADJUSTMENT PROCEDURES
REAR WHEEL ALIGNMENT INSPECTIONN17FAAC
The rear suspension assembly must be free of worn, loosen or
damaged parts prior to measurement of rear wheel alignment.
Standard value:
Toe-in (Left-right difference)
Of3 mm (Of.118 in.)
Camber-45’ + 30’
NOTEThe rear wheel alignment is set at the factory and cannot be
adjusted.If toe-in or camber is not within the standard value, replace
bent or damaged parts.
WHEEL BEARING END PLAY ADJUSTMENT,7FBA0
1.Inspect the play of the bearings while the vehicle is jacked
up and resting on floor jack.
2.Remove the hub cap and then release the parking brake.
3. Remove the caliper assembly and the brake disc.
4. Check the bearing’s end play.
Place a dial gauge against the hub surface; then move the
hub in the axial direction and check whether or not there isend play.
Limit: 0.01 mm
(.004 in.) or less
NOTE12AO531If the limit value is exceeded, the lock nut should be
tightened to the specified torque and check the end play
again.
5.Replace the rear hub bearing unit if an adjustment cannot
be made to within the limit.

17-4REAR SUSPENSION - Service Adjustment Procedures
12A0533
3REAR HUB ROTARY-SLIDING
RESISTANCE
(TORQUE) ADJUSTMENTN17FCAC -
1.Inspect the play of the bearings while the vehicle is jacked.
up and resting on floor jack.
2. Release the parking brake.
3. Remove the caliper assembly and the brake disc.
4. After turnina the hub a few times to seat the bearing,
attach a spriig balance to the hub bolt, and, pulling at a 9@angle from the hub bolt, measure to determine whether or
not the rotary-sliding resistance of the rear hub (the
rotary-sliding torque of the rear hub) is the standard value.
Limit:
Rear hub rotary-sliding resistance
31N (7 Ibs.) or less
Rear hub rotary-sliding torque1.8 Nm (1.30
ft.lbs.) or less
NOTEIf the limit value is exceed, loosen the nut and then tighten
it to the specified torque, and check the rear hub
rotary-sliding torque again.
5. Replace the rear hub bearing unit if an adjustment cannot
+.be made to within the limit.
A