ECU MITSUBISHI ECLIPSE 1991 Owners Manual

14-120AUTO-CRUISE CONTROL SYSTEM - Troubleshooting
11. CHECKING THE THROTTLE POSITION SENSOR AND IDLE SWITCH CIRCUIT<1.8L Engine>
Throttle
position
sensor
MPI controlunitnw374<2.0L DOHC Engine>
ruiseI unitDescription of operation
“s
The throttle position sensor and idle switch are mounted in the,
motor position sensor or throttle body and are sensors in theMPI system. The idle switch is turned OFF when the accelera-
tor pedal is pressed and ON when it is released. In addition,
throttle position sensor output voltage varies according to thedegree of opening of the throttle valve.Troubleshooting hint
<Throttle position sensor>
Diagnosis-No. 17
<Idle switch>
Diagnosis-No. 17
ECU terminal voltageTeKlna’
SignalConditionsTerminal
voltage
4Idle switchWhen accelerator
pedal is pressedXFgr
When acceleratorovpedal is released
5ThrottleWhen accelerator 4.OV-5.5V
position sensorpedal is pressedall the way down
When accelerator 0.48-0.72Vpedal is released

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) <M/T>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).

16-12PROPELLER SHAFT - Propeller Shaft
10X0036Mounting boltsLijbro joint bootlOUOO16
clip
position1 ABoot band 1
.:,q,,<P#1ouoo17Dust sealRubber mount
/
-
10x0001(7)
Install the Lobro joint assembly on the rear propeller
shaft while aligning their bolt holes, and drive the joint
assembly with a hammer using a socket wrench on the
;rinner race for complete installation.-4’
(8) Secure the inner race with the snap ring.
(9) Realign the bolt holes in the boot and Lobro joint
assembly utilizing the mounting bolts and fit the boot onthe joint assembly.
(1O)Secure the boot with the boot band.
Caution
Position the boot band clip on the side opposite tothe bosses which are provided in the boot for
Aventilation. Be sure to remove grease, if present,
’ _from around the bosses. Grease obstructs the
ventilation air passage.
(11)Check that the Lobro joint assembly moves smoothly.
12. INSTALLATION OF CENTER BEARING ASSEMBLY
(1) Apply multipurpose grease to the center bearing front
and rear grease grooves and to the dust seal lip.
Grease: MOPAR Multi-mileage Lubricant
Part No. 2525035 or equivalent(2) Be sure to fit the bearing into the rubber mount groove
on the center bearing bracket.
e;
NOTE-4
Face the bearing dust seal to the side of center bearingbracket mating mark.
(3) Assemble the center bearings to the center propeller
shaft and rear propeller shaft.

PROPELLER SHAFT - Propeller Shaft
NOTEFace the side onto which the center bearing bracket
mating mark is placed and the dust seal is
in,stalled to
the side of the center propeller shaft and
rear.propeller
10X0032
1 OY607
shaft.
11. INSTALLATION OF RUBBER PACKING/lo. COMPAN-
ION FLANGE/S. CENTER YOKE/8. SELF LOCKING NUT
(1) Apply a thin and even coat of the specified grease to therubber packing and fit the packing on the companion
flange.
Specified grease: Repair kit grease(2) Align the mating marks on the center propeller shaft
and center yoke, and the rear propeller shaft and
companion flange, then press fit the center bearing
with self locking nuts, tightening to the specified
torque.
,.
7.INSTALLATION OF LOBRO JOINT ASSEMBLY INSTAL-
LATION BOLTS
(1) Secure the companion flange and Lobro joint assembly
with installation bolts.
(2) Check for grease leakage from the Lobro joint boot andcompanion flange installation parts.
3. JOURNAL/2. JOURNAL BEARING(1) Apply multipurpose grease to the following parts of the
universal joint kit.
@ Shafts and grease sumps of journal
@ Dust seal lips
@ Needle roller bearings
Grease: MOPAR Multi-mileage Lubricant
Part No. 2525035 or equivalent
Caution
Do not apply excessive grease. Otherwise, faulty
fitting of bearing caps and errors in the selection of
snap rings may result.

17-6REAR SUSPENSION <FVVD> - Rear Suspension AssemblyAxle beam
Drive out
BayArbor
Race
BearingSERVICE POINTS OF REMOVAL
Nl7QBh
1.REMOVAL OF REAR SPEED SENSOR <VEHICLES WITH-~
ABS>Refer to GROUP
5-Wheel Speed Sensor.
11. REMOVAL OF LATERAL ROD MOUNTING BOLT
(1) Remove the lateral rod mounting bolt.
(2) Secure and hold the lateral rod to the axle beam with
wire, etc.
13. REMOVAL OF SHOCK ABSORBER UPPER ‘MOUNTINGNUTS/14. TRAILING ARM MOUNTING BOLTS/15
REAR SUSPENSION ASSEMBLY(1) Jack up the torsion axle and arm assembly in order to
raise it slightly.
Caution
1.Always insert a wooden block between the jack
receptacle and the axle beam and place the jackat the center of the axle beam.
2. Make sure that the jack does not contact the
lateral rod.(2) Remove the shock absorber
m,ounting nuts and trailing
arm mounting bolts.
(3) Lower the jack slowly, and then remove the rear
suspension assembly.
#-
INSPECTIONNl7QCAL
lCheck the trailing arm and axle beam for deformation or
damage.l Check the torsion bar for damage.
l Check the lateral rod for damage or deformation.
lCheck the bushings for cracking, deterioration, or unusual
wear.
BUSHING REPLACEMENTNl)GTAE
TRAILING ARM BUSHING(1) Drive out the trailing arm bushing as shown in the
illustration.
Caution
The bearing within the special tool should be installed,
as shown in the figure, at the race surface nut side of7
the bearing.

REAR SUSPENSION <AWD> - Rear Suspension ~Assembly
14AO520
12AOlOQ
SERVICE POINTS OF REMOVALN17GQAOa4. REMOVAL OF CALIPER ASSEMBLY
(1) Remove the lock pin, rotate the calipei
&&e-@blyupward, then remove the caliper assembly and secure
it with wire, etc.
Caution
The lock pin has a special grease appl‘ied tq it, so besure not to wipe it off, and ensure that the lock pin
stays clean.
(2) After removing the caliper assembly,
.cover the guide
pin with a cloth, etc.
8. REMOVAL OF PROPELLER SHAFT INSTALLATION
BOLT AND NUT
Place mating marks on the differential carrier companion
flange and the propeller shaft flange yoke.
NOTEThe mating marks should be used as a reference for
re-installation.9. REMOVAL OF SELF LOCKING NUT
(1) Before removing the self’ locking nuts, support the
differential case with a transaxle jack.
(2) Remove the self locking nuts.
12. REMOVAL OF PARKING BRAKE CABLE AND REAR
SPEED SENSOR INSTALLATION BOLT
(1) Lower the transaxle jack slightly.
(2) Remove the parking brake cable installation bolts.
NOTEThe task may be made easier by increasing the gap
between the body and the
crossmember.

REAR SUSPENSION <AWD> - Trailina Arm
12A008’I
SERVICE POINTS OF REMOVALu17mAA2. REMOVAL OF REAR BRAKE ASSEMBLY
Remove the rear brake assembly installation
bolts, then
suspend the rear brake assembly from the
vehrcle, with
wire, etc.
5. REMOVAL OF SELF LOCKING NUT
With the special tool, secure the rear axle shaft, then
remove the self locking nut.
9. REMOVAL OF REAR AXLE SHAFT
With the special tool, remove the rear axle shaft.
11. REMOVAL OF SELF LOCKING NUT (UPPER ARM)
With the special tool, disconnect the upper arm ball joint
and knuckle.
Caution
While the special tool is being used, do not remove the
self locking nut; only loosen it.
12. REMOVAL OF SELF LOCKING NUT (LOWER ARM)
With the special tool, disconnect the lower arm ball joint
and knuckle.
Caution
While the special tool is being used, do not remove the
self locking nut; only loosen it.

-.REAR SUSPENSION <AWD>
- Stabilizer Bar17-37Clip
ring
12LO217
Jrpose
\12LQ243
Hold with
wrench
12AOlOO
CHECKING OF STABILIZER LINK BALL JOINT FOR START-ING TORQUE
(1) If a crack is noted in the dust cover, replace it, adding
grease.(2) Deflect side to side the stabilizer link ball joint stud several
times.(3) Mount two nuts on the ball joint, and then measure the ball
joint starting torque.
Standard value:
1.7-3.2 Nm (15-28 in.lbs.)(4) If the starting torque exceeds the upper limit of standard
value, replace the stabilizer link.
(5) Even if the starting torque is below the lower limit of the
standard value, the ball joint may be reused unless it has
drag and excessive play.
BALL JOINT DUST COVER REPLACEMENTNozm(1) Remove the clip ring and the dust cover.
(2) Apply multipurpose grease to the lip and inside of the dust
cover.Grease: MOPAR Multi-mileage Lubricant
Part No.2525035 or equivalent
(3)Use vinyl tape to tape the stabilizer link where shown in theillustration, and then install the dust cover to the stabilizer
link.(4) Secure the dust cover by the clip ring.
SERVICE POINTS OF INSTALLATIONNl7ICAO
11. INSTALLATION OF STABILIZER LINK/ 10. SELF LOCK-
ING NUT/G. SELF LOCKING NUT
(1) Hold the stabilizer link ball studs with a wrench and
install the self locking nut (A).
(2)Holding the stabilizer link with a wrench, tighten the self
locking nut(B) so that the protrusion of the stabilizer linkis within the standard value.
Standard value: 9-11 mm
(.354-.433 in.)

STEERING - Service -Adjustment Procedures < Power Steering >IgJf~
4.Disconnect the high-tension cable, and then while operating
the starting motor intermittently, turn the steering wheel all;
the way to the left and right several times to drain all of the
fluid.
Caution, 35
Be careful not to position thq high-tension able ye&r the
carburetor or the delivery pipe.5. Connect the return hoses securely, and then
secur& it ,with
the clip.6. Fill the oil reservoir with the specified fluid up
td the Ibwerposition of the filter, and then bleed the air.
.’
Specified fluid:MOPAR ATF PLUS (Automatic Transmis-sion Fluid Type 7176)/Automatic trans-
mission fluid “DEXRON” or “DEXRON II”Fluid level change:
within
5 mm (2 in.)While engineWhile engine
runningstoppedl?lrnl?J3
BLEEDINGNlSFKAG
1.Jack up the front wheels and support them by using a floor
stand.2. Manually turn the oil pump pulley a few times.
3. Turn the steering wheel all the way to the left and right
several times.
4.Disconnect the high-tension cable, and then, while operatingthe starting motor intermittently, turn the steering wheel all
the way to the left and right several times
(for 1-5 to 20
seconds).
Caution
1. During air bleeding, replenish the fluid supply so thatthe level never falls below the lower positiin
@f the
eiter.I .“:
2. If air bleeding is done while engine is runnind, ‘the air
will be
brokeir up and absorbed intti the fluid;‘?ti’ sureto do the bleeding only while cranking.
5.Connect the ignition cable, and then start the engine (idling).6. Turn the steering wheel to the left and right until there are
no air bubbles in the oil reservoir.
7. Confirm that the fluid is not milky, and that the level is
upito the specified position on the level gauge.
8.Confirm that there is very little change in the fluid level whenthe steering wheel is turned left and right.
9.Check whether or not the change in the fluid level is within5 mm
(.2 in.) when the engine is stopped and when it is
running.
Caution
1.If the change of the fluid level is 5 mm I.2 in.) or more,
the air has not been completely bled from the system,
and thus must be bled completely.2. If the fluid level rises suddenly after the engine is
stopped, the air has not been completely bled.
3. If air bleeding is not complete, there will be abnormal
noises from the pump and the flow-control valve, and
this
condition could cause a lessening of the life of the
pump, etc.

19-36STEERING - Power Steering Gear BoxMB991317
side
13A031fVinyl tape
APP~automatic
transmissionfluid
13POl44
IApprox. 1 mm
(Approx. ,040 in.)i, Tool
’ 13POO76
13A014:
End plug
Sealant
13K,30II
I
IEnd plug\ ,I
NOTE
Because the seal rings expand at the time of installation,use the special tool to compress the seal rings so that
-they are well seated.
L
(2) Apply multipurpose grease to pinion gear and housing
bearing.Grease: MOPAR Multi-mileage Lubricant
PartNo.2525035 or equivalent
(3) Wrap vinyl tape around the serrated part so that the oil
seal won’t be damaged when the pinion
and valveassembly is installed to the valve housing.
(4) Mount the pinion and valve assembly to the valve
housing.
18. INSTALLATION OF OIL SEAL
Using a tool, press the oil seal into the valve housing.
CautionIn order to eliminate a seal malfunction at the valve
-
housing alignment surface, the upper surface of -the oilseal should project outward
approximatelv 1 mm t.040in.) from the housing edge surface.
‘, I
16. INSTALLATION OF RACK SUPPORTApply multipurpose grease to the rack support surface in
contact with the rack bar.
Grease: MOPARMulti-mileage
LubricantPartNo. 2525035 or equivalent
14. INSTALLATION OF RACK SUPPORT COVER
Apply semi-drying sealant to rack support cover screw. Locktemporarily with locking nut.
11. INSTALLATION OF END PLUG
(1) Apply the specified sealant to the threaded part of the
end plug.
Specified sealant:
3M ATD Part No.6663 or equiva-
lent
rL-
(2) Secure the threaded portion of the end plug at two._places by using a punch.