1991 MITSUBISHI ECLIPSE wheel

BRAKES - Anti-lock Braking System Troubleshooting5-35Check flow connected with wheel speed
NOTE:
sensorWhen checking with an oscilloscope, first measure voltagefl-variations in the wheel speed sensor output. (Refer to P.5-51.)Is the resistance value of the wheel
speed sensor part, which the displayed
No cMalfunction of wheel speed _~ Replacewheel speedsensor
sensor.trouble code indicates, normal?
Standard value:
0.8-l .2 kQIs the resistance value with the ECU
No* Harness
wireforwheelRepair harness.connector normal?
speedI
broken.Is the standard value tor the
gap between the wheel
speed sensor and rotor,
which the output trouble
code indicates, within the
range?Standard value:
h;ti;j3-0.9 mm (.012-Rear
Nb adjustment
- No
the wheel speed sensor. Replace rotor that has
rotor that the trouble code
missingor damaged
indicates, normal and withteeth.
missing or damaged
Check the output of each
wheel speed sensor with an
oscilloscope, including the
wave form.
(Refewhekqmeasurement of
speed sensor output voltage
variations on
P.5-51.) Is the
output voltage for each
wheel speed sensor over
the standard value and is thewave form normal?I
YesCan the abnormality be
found even if the sensor
harness and connection be-
tween sensor harness and
body harness are bent and
stretched?
No
Repair harness.

5-40BRAKES - Anti-lock Braking System Troubleshooting
E-7Abnormality of motor drive circuit
[Explanation]The ABS ECU illuminates the warning light for the
motor relay and motor in the following cases.
l When the motor relay does not function
lWhen there is trouble with the motor itself and it
does not revolve
[Hint]If there is motor operation noise when wheel speed
exceeds
Gkm/h (4mph) when starting up after the
engine is started, there is a broken or short circuitedmotor monitor wire.
lWhen the motor ground line is disconnected andthe motor does not revolve
l When the motor continues to revolve
Does the motor make a
YesBroken wire or short cir-noise when wheel speed
-cuit in motor monitor line
exceeds 6 km/h (4 mph)?
b
NoRepair the harness between HU and ECU.
emove the motor rela
ABS ECU
14A0105
Remove the motor relav and
check resistance values.
No.
85-No. 86:resistancevalue 30-60 QNo.30-No.87: no continui-
ty
Battery voltage is applied on
terminals No. 86 and No. 85
grounded
No. 30-No. 87: continuity
Yes
q Motor relay malfunction 1
Replace motor relay.I
Is pump motor ground con-netted normally?Connect ground wire.I
b
Does voltage between bodyNo
connector terminal 51 andIBroken wire in pumpmotor power circuit
ground indicate battery vol-
tage?1Repair the harness.
YesIs resistance between body
- No L Malfunction of harness
connector terminal No. 2 andbetween HU and ECU
No.26 30-60 ohms?b
YesRepair harness.
Motor drive circuit is normal.

BRAKES - Service Adjustment Procedures5-43When engine is
stoppedNo good
0
wtwo061
VV;Videngine is
t4uoo60
Caution
If the number of brake lever notches engaged is less
than the standard value, the cable has been pulledexcessively, and failure of the automatic adjuster
mechanism will result. Be sure tti adjust it to within the
standard value.(6) After making the adjustment, check to be sure that there is
no play between the adjusting nut and the pin. Also check
to be sure that the adjusting nut is securely held at the nut
holder.(7) After adjusting the lever stroke, jack up the rear of the
vehicle.(8) With the parking brake lever in the released position, turn
the rear wheel to confirm that the rear brakes are not
dragging.
PARKING BRAKE SWITCH CHECKN05FDAB
(1) Disconnect the connector of the parking brake switch, and
connect an ohmmeter to the parking brake switch and the
switch installation bolt.
(2) The parking brake switch is good if there is continuity whenthe parking brake lever is pulled and there is no continuity
when it is returned.
BRAKE BOOSTER OPERATING
lNSPECTIONNoSFcuFor simple checking of brake booster operation, carry out the
following tests.
(1) Run the engine for one or two minutes, and then stop it.
(2) Step on the brake pedal several times with normal
pressure.If the pedal depressed fully the first time. but gradually
becomes higher when depressed succeeding times, the
booster is operating properly.
If the pedal height remains unchanged, the booster is
faulty.(3) With the engine stopped, step on the brake pedal several
times with the same pressure to make sure that the pedal
height will not change.
Then step on the brake pedal and start the engine.
If the pedal moves downward slightly, the booster is in
good condition. If there is no change, the booster is faulty.
(4) With the engine running, step on the brake pedal and then
stop the engine.
Hold the pedal depressed for 30 seconds. If the pedal
height does not change, the booster is in good condition.
If the pedal rises, the booster is faulty.
If the above three tests are okay, the booster performance canbe determined as good.
If one of the above three tests is not okay at last, the check
valve, vacuum hose, or booster will be faulty.

BRAKES - Service Adiustment Procedures5-45I
\\14A0416
2314A04.54
BLEEDINGN65FYAN
When the master cylinder is empty of brake fluid, bleed air
from the master cylinder by proceeding with procedures (1)
thru (6). (Because this master cylinder is not equipped with a
check valve.)
When brake fluid remains in the master cylinder, proceed with
step (6).
(1) -Disconnect the brake tube from the master cylinder.
(2) Two persons should conduct the air bleeding, one person
slowly depressing the brake pedal and holding the pedal
depressed.(3) In this condition, the other person should use a finger to
close the outlet part of the master cylinder, and then the
first person should release the brake pedal.
(4) Steps (2) and (3) should be repeated three or four times,
and then the master cylinder should be filled with brake
fluid to the specified level.
NOTE
The air is completely bled from the master cylinder by steps
(1) to (4).
(5) Connect the brake tube to the master cylinder.
(6) Start the engine; then, in the sequence shown in the
illustration, bleed the air from each wheel cylinder.
Specified brake fluid: MOPAR Brake Fluid/
Conforming to DOT3
Caution
1.Use the specified brake fluid. Avoid using a mixture
of the specified brake fluid and other fluid.2. If brake fluid is exposed to the air, it will absorb
moisture; as water is absorbed from the atmos-phere, the boiling point of the brake fluid will
decrease and the braking performance will be
seriously impaired. For this reason, use a hermeti-
cally sealed 1 lit.
(1.06 qt.) or 0.5 lit. (0.52 qt.) brake
fluid container.3. Firmly close the cap of the brake fluid container
after use.
4. For vehicles with the anti-lock braking system, besure to install a filter to the master cylinder
reservoir tank when supplying brake fluid.
ORDINARY AIR-BLEEDING PROCEDURES(1) Depress the brake pedal several times until resistance is
felt; then, with the pedal depressed, loosen the bleeder
screw
l/3 to l/2 turn and then tighten it before the fluid
pressure is all gone.
(2) Release the brake pedal. Repeat this procedure until there
are no more air bubbles in the brake fluid.

5-46BRAKES - Service Adjustment ProceduresWhen new
When worn
14G0017
14LO169
14A0403
\14AO400
FRONT DISC BRAKE PAD CHECK AND REPLACE-
MENiNWFOAF
NOTE
The brake pads have wear indicators that contact the brake discd’when the brake pad thickness becomes 2 mm
(.08 in.), and
emit a squealing sound to warn the driver.
1. Check brake pad thickness through caliper body check
port.Limit: 2.0 mm
(.08 in.)
Caution1. When the limit is exceeded, replace the pads at
both sides, and also the brake pads for the wheelson the opposite side at the same time.
2.If there is a significant difference in the thicknesses
of the pads on the left and right sides, check the
sliding condition of the piston, lock pin sleeve and
guide pin sleeve.
2.Remove lock or guide pin. Lift caliper assembly and retain
with wires.
Caution
Do not wipe off the special grease that is on the guide
-pin or allow it to contaminate the guide pin.
3. Remove the following parts from caliper support.
=Qg@-(4)
(1)
(2)
(3)
(4)Pad and wear
indicator assembly
Pad assembly
Outer shimPad clips
-4. Measure hub torque with pad removed to measure brake
drag torque after pad installation.
NOTETighten the nuts in order to secure the disc to the hub.
5. Securely attach the pad clip to the caliper support.a

5-48BRAKES - Service Adjustment Procedures
14A0407FRONT BRAKE DISC RUN-OUT
CORRECTIO&wAB
1.If the run-out of the brake disc is equivalent to or exceeds 5the limit specification, change the phase of the disc and
-’hub, and then measure the run-out again.
(1) Before removing the brake disc, chalk both sides of the
wheel stud on the side at which run-out is greatest.
(2) Remove the brake disc, and then place a dial gauge as
shown in the illustration; then move the hub in the axialdirection and measure the play.
Limit: 0.008 mm
(00031 in.)
If the play is equivalent to or exceeds the limit,
disassemble the hub knuckle and check each part.
(3) If the play does not exceed the limit specification, and
then check the run-out of the brake disc once again.
Mount the brake disc on the position dislocated from
the chalk mark.
ei
2.If the run-out cannot be corrected by changing the phase-ofI’the brake disc, replace the disc.
REAR DISC BRAKE PAD CHECK AND REPLACE-MENT
NO5FUAD
1. Check brake pad thickness through caliper body check
port.Limit: 2.0 mm
(.08 in.)
Caution1. When the limit is exceeded, replace the pads at
both sides, and also the brake pads for the wheelson the opposite side at the same time.
2.If there is a significant difference in the thicknesses
of the pads on the left and right sides, check the
sliding condition of the piston, lock pin sleeve and
guide pin sleeve.
2.Loosen the parking brake cable (from the vehicle interior),
and disconnect the parking brake end installed to the rear
brake assembly.
A
3.Remove lock pin. Lift caliper assembly and retain with -‘wires.
Caution
Do not wipe off the special grease that is on the lockpin or allow it to contaminate the lock pin.

BRAKES - Service Adjustment Procedures5-51E.C.U. terminal
ILow gear idle condition
[Speed: 5-6 km (3.1-3.16
mph)]Approx.
5V
14A0580When increasing speed
[Speed:
15-20 km (9.3-12.4 mph11OBSERVATION OF WHEEL SPEED SENSOR
OUTPUT VOLTAGE VARIATIONS ABS>N65FOAO
(1) Jack up the vehicle and release the parking brake.
(2) Disconnect the electronic control unit harness connector,
and measure the speed sensor output voltage at the
vehicle side harness connector.
(3) With an AWD model, put the shift lever in
1st (MTT) or L(A/T) position, rotate the wheels and observe the wave
shape for each wheel. With an FWD model, put the shift
lever in
1st (M/T) or L (AiT) position, rotate the wheels and
observe the wave shape for the front wheels; for the rear
wheels, rotate the wheels by hand and monitor the wave
shape.
NOTEIt is also
allright to actually drive the car.
ISpeed sensor
E.C.U. terminal No.I
IFront leftI14-15I
IFront right31-33I
IRear right28-30I
IRear left1 10-11IWhen wheel speed is slow, the output voltage is low
and it gets higher as the speed increases.
Wave shape monitoring points
IS THE OUTPUTVOLTAGE (AMPLITUDE) TOO LOW OR ISTHERE NO OUTPUT VOLTAGE?
If it is too low, check each wheel speed sensor,
With FWD rear wheels, check the sensor gap.
IS THERE VARIATION IN THE WAVE SHAPE AMPLITUDE?
If the flicker of the amplitude is large, consider shaking
of the axle hub.
IS THERE NOISE IN THE WAVE SHAPE OR DISTORTION?Broken or disconnected wire due to vibration or
installation malfunction of the wheel speed sensor.
Check rotor teeth meshing, breaks, etc.
Approx. 1 OV
14A0501

BRAKES - Brake Pedal5-53
BRAKE PEDAL
-I REMOVAL AND INSTALLATION
.Pre-removal Operation
aRemoval of Knee Protector
(Refer to GROUP 23%Instrument Panel.)
ORemoval of Lap Cooler Duct and Shower
Duct (L.H.)(Refer to GROUP 23-Instrument Panel.)l Removal of Steering Column Assembly andColumn Support
(Refer to GROUP
19-Steering Wheel andShaft.)*Removal of Relay Box (Indoor)

NO5OA--Post-installation Operation
l installation of Relay Box (Indoor)l Installation of Steering Column Assembly andColumn Support
(Refer to GROUP 19-Steering Wheel and
Shaft.)@Installation of Lap Cooler Duct and Shower
Duct
(L.H.)(Refer to GROUP 23-Instrument Panel.)l Installation of Knee Protector(Refer to GROUP 23-Instrument Panel.)aBrake Pedal Adjustment
(Refer to P.5-41.)20-25 Nm
,‘14-18 ft.lbs.
IO-15 Nm /7-11 ft.lbs.
/
11-17 Nm
8-12 ftlbs.6-9
ftlbs.Removal steps
1. Stop light switch connector
2. Stop light switch
l + 5. Return spring
9.Cotter pin10.Washer11.Clevis pin12.Cotter pin
13. Shift-lock cable connection
20. Lever assembly (A) mounting nut
NOTF(i, Reverse the removal procedures to reinstall.(2) 4I) : Refer to “Service Points of Removal”.(3) l * : Refer to “Service Points of Installation”.
(4) m : Non-reusable parts
(5) *: Vehicles with auto-cruise control system
14A0525
l *
21.Lever
22. Pedal support bracket
24. Lever assembly (A)
25.Bushing
26. Pedal rod
27.Bushing
28.Brake pedal
29. Lever assembly(B) mounting nut
30. Lever assembly
(B)31.Bushing
.20