sensor MITSUBISHI ECLIPSE 1991 Owner's Manual

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.

5-36BRAKES - Anti-lock Braking System Troubleshooting
E-3Abnormality of G sensor circuit
[Explanation]The ABS ECU turns on the warning light in the
following cases.
lOFF trouble turning G sensor OFF (It is judged
that the
G sensor continues to be OFF for more
than approximately 13 seconds except when the
lWhen there is a broken wire or short circuit in
the harness for the
G sensor system.
PlUN; F;SIBLEIGNITIONSWITCH (IG2)J/B
G-SENSOR
E-lABSECU
14AO609
Is G sensor normal? (ReferNoto
P.5-86.)Replace G sensor.
I YesWith the ignition key “ON”
_ No m The harness between the
does the voltage betweenG sensor and the ABS
terminal No.6 and groundECU is broken.
indicate battery voltage?
IG sensor circuit is normal.I

5-42BRAKES - Service Adjustment Procedures
BRAKE FLUID LEVEL SENSOR CHECKNO5FBAB(1) Connect a circuit tester to the brake fluid level sensor.
4(2) Move the float from top to bottom and check for
.-,’continuity.
(3) The brake fluid level sensor is in good condition if there is
no continuity when the float surface is above “A”, and if
there is continuity when the float
surface is below “A”.
PARKING BRAKE LEVER STROKE CHECK NWFEAJ
1.Pull the parking brake lever with a force of approx. 200 N(45
Ibs.), and count the number of notches.
Caution
The 200 N (45 Ibs.) force of the parking brake lever must
be strictly observed.
Standard value: 5-7 notches
2.If the parking brake lever stroke is not the standard value,
adjust as described below.
(1) Remove the carpet in the floor console.
(2) Loosen the adjusting nut to the end of the cable rod,
fithus freeing the parking brake cable.
(3) With the engine idling, firmly depress the brake pedal
five or six times and confirm that the pedal stroke stops
changing.
NOTEIf the pedal stroke stops changing, it indicates that the
automatic adjusting mechanism has functioned proper-ly to adjust the clearance between the pads and the
disc to the correct value.
(4) Check to be sure that the clearance between the
stopper and the parking brake lever at the caliper side isas shown in the figure.
NOTEIf the clearance between the parking brake lever and
the stopper exceeds 2 mm
(078 in.), the probable
causes are brake cable sticking, improper wiring, or a
malfunction of the automatic adjuster (within the rear
brake caliper), so it is necessary to check the parking
-brake cable and to disassemble and check the rear
-brake caliper.
(5) Turn the adjusting nut to adjust the parking brake lever
stroke to within the standard value range.

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

5-56BRAKES -Master Cylinder
MASTER CYLINDERREMOVAL AND INSTALLATION
Pre-removal Operation
l Draining of Brake FluidPost-installation Operationl supplying Brake Fluidl Bleeding(Refer to P.5-45.1l Adjustment of Brake Pedal(Refer to P.5-41.)
Removal steps
/8-12 Nm
6-S Mbs.
14A02491. Fluid level sensor connector
2. Brake tubes
3. Reservoir hoses
4. Master cylinder
5. Reservoir
6. Bracket
NOTE
l 4Adjustment of clearance between brake(I) Reverse the removal procedures to reinstall.
booster push rod and primary piston(2) l + : Refer to “Service Points of Installation”.
14110053SERVICE POINTS OF INSTALLATIONNWlDAOa
. ADJUSTMENT OF CLEARANCE BETWEEN BRAKE
BOOSTER PUSH ‘ROD AND PRIMARY PISTONAdjust the clearance (A) between the brake booster push
rod and primary piston as follows:
m
J

5-58BRAKES - Master Cylinder
IISASSEMBLY AND REASSEMBLYNOMA-
r------1
11414UO125
Iii
Brake master cylinder kit
6
:.5i340,b;m- . .
; .5F3h0,bfm
- . - +-10
.3.0 Nmft.lbs.
Disassembly steps
1. Reservoir cap assembly2.Diaphragm3.Reservoir cap4.Filter;: ;3r&e fluid level sensor
7.ReservoirI)+8.Nipple9.Reservoir seal
4+10. Piston stopper bolt
MAO57511. Gasket
aLI)12. Piston stopper ring+e ~~ 13. Primary piston assembly+e W 14. Secondary piston assembly
~~ 15. Master cylinder body
FrEeverse the disassembly procedures to reassemble.
(2) 4e : Refer to “Service Points of Disassembly”(3) l + : Refer to “Service Points of Reassembly”I;! m : Non-reusabje parts*: Vehicles with ABS

5-60BRAKES - Brake Booster
BRAKE BOOSTER
REMOVAL AND INSTALLATION
IPre-removal Operationl Drainino of Brake FluidI6
Removal steps
1. Relay box (for air conditioner)
2. Solenoid valve assembly
3. Brake fluid level sensor connector4. Brake tube
5. Master cylinder, hose, reservoir assembly
+I) e+6. Vacuum hoses with check valve+a 7. Fitting
8. Cotter pin
I)4 9. WasherI)4 10. Clevis pin11. Fuel return tube installation bolt
12. Brake tube installation bolt
13. Brake booster
14. Sealer
MA0392
NOTE(1) Reverse the removal procedures to reinstall.(2) ** : Refer to “Service Points of Removal”.(3) l * : Refer to “Service Points of Installation”.(4) m : Non-reusable parts

5-70
REAR DISC BRAKE
BRAKES -’ Rear Disc Brake
REMOVAL AND INSTALLATION
IPre-removal Operation
@Draining of Brake Fluid

~1 ,.
l Adjustment of Parking Brake Lever
1.150-60Nm
9-14
Nm36-43ft.lbs.
7-10ft.lbs./
7- 10ft.lbs.
Removal steps
4*1. Parking brake cable connection
2. Brake hose connection
3. Rear brake assembly
4. Rear brake disc
5.
Hubcab
+4 76. ME;AFearing nut
8: Rear speed sensor bracket
9. Rear hub assembly
14. Dust shield
NOTE(1) Reverse the removal procedures to reinstall.
(2) +* : Refer to “Service Points of Removal”.(3) ** : Refer to “Service Points of Installation”.
(4) m : Non-reusable parts
MAO574

BRAKES - Rear Disc Brake59q!l
50-60Nm36-43ft.lbs.9-14Nm55-65Nm
39-47
klbs.
/160-220 Nm116-159 ft.lbs.14A0222
1. Parking brake cable connection
4*2. Brake hose connection
3. Rear brake assembly
4. Rear brake disc
+e l + IO. Self locking nutr)+ 11. Companion flange
12. Rear speed sensor
KVehicles with ABS>+e l 13. Rear axle shaftPre-removal Operation
@Draining of Brake Fluid
Post-installation Operation
l supplying Brake Fluid(Refer to
P.5-45.)l Adjustment of Parking Brake LevelStrokeP.5-42.)
NOTE
(1) Reverse the removal procedures to reinstall.(2) +e:“Service
(3) I)+ : Refer to “Service Points of Installation”.
(4) m : Non-reusable parts

5-80BRAKES - Wheel Speed Sensor
WHEEL SPEED SENSOR REMOVAL AND INSTALLATIONN06dYAG
4.
9-14 Nm
7-10 ft.lbs.
-/?’9-14 Nm
7- 10 ft.lbs./5Front speed sensor removal steps
4*I. Front toothed rotor
2. Clip
3. Connection for front speed sensor
+e l +4. Front speed sensorl +5. Front speed sensor bracket7-11 Nm
14A0584Rear speed sensor removal steps
**6. Rear toothed rotor
7. Clip
8. Cable band
9. Connection for rear speed sensor
+e I)* 10. Rear speed sensorl + 11. Rear speed sensor bracket
NOTE(1) Reverse the removal procedures to reinstall.(2) 4* : Refer to “Service Points of Removal”.(3) l * : Refer to “Service Points of Installation”.