1991 MITSUBISHI ECLIPSE service

BRAKES - Hydraulic Unit
HYDRAULIC UNIT
--. REMOVAL AND INSTALLATION
6Removal steps
I)+ 1. Brake tube connection
2. Relay box cover
3. Hydraulic unit harness connection
~~ l 4. Hydraulic unit5. Hydraulic unit bracket assembly
6. Bracket
7. Valve relay
1(Refer to GROUP
II-Intercooler.)Post-installation Operation
@Supplying Brake FluidaBleeding (Refer to P.5-45.)@Installation of Air Pipe B(Refer to GROUP II-Intercooler.)8. Motor relay
9. Connector bolt
10. Connector
11. Gasket
NOTE(1) Reverse the removal procedures to reinstall.
(2) +e : Refer to “Service Points of Removal”.
(3) e+ : Refer to “Service Points of Installation”.

5-78BRAKES - Hydraulic Unit
SERVICE POINTS OF REMOVAL
4. REMOVAL OF HYDRAULIC UNITb-3Remove the installation nuts, and then take out the __
hydraulic unit upward.
Caution
1. The hydraulic unit is heavy, and so care should be
taken when removing it.2. The hydraulic unit is not to be disassembled; its
nuts and bolts should absolutely not be loosened.
3. The hydraulic unit must not be dropped or other-
wise subjected to impact shocks.
4.The hydraulic unit must not be turned upside downor laid on its side.
Aotor relay
16R0670
16Rl773
INSPECTIONCheck whether there is continuity between terminals when
there is no current flow at each relay and when there is currentflow.
JlOTOR RELAY
Between
When noterminals @-@I
current flowsBetween
terminals @I-@
When current
flows between
Between
terminal
terminals @--@
@-@
30-60 52
No continuity
(WQ)
Continuity
(approx. 0 8)

BRAKES -Hydraulic Unit 5-79
Jalve relay
16R0670
87a
16Rl772
/ALVE RELAYBetween
terminals
@-@60-120 &2When noBetween
current flowsterminals
@I--@Continuity
(approx. 0 Q)Between
terminals
@J-QNo continuity(wQ2)When currentBetweenNo continuity
flows betweenterminals
@-@I(WQ)
terminal
@-@Between
terminals @--@Continuity
(approx. 0 S22)SERVICE POINTS OF INSTALLATION
4. INSTALLATION OF HYDRAULIC UNITFasten the ground wire to hydraulic unit bracket assembly.
1. CONNECTION OF BRAKE TUBEWhen connecting the tubes to the hydraulic unit, be sure
they are connected correctly.
(Refer to
P.5-64.)

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”.

BRAKES - Wheel Speed Sensor 5-81;
7-10 ft.lbs.
IPost-installation Operation@Installation of the Snlash ShieldI
1 (Refer to GROUP 23-Fender.)17-11 Nm
14A0582Front speed sensor removal steps
4*1. Front toothed rotor
2. Clip
3. Front speed sensor connection
4I) WI 4. Front speed sensor
l 5. Front speed sensor bracket
Rear speed sensor removal steps
6. Rear toothed rotor
(Refer to GROUP 27-Rear Axle Hub.)7. Clip
8. Cable band
9. Rear speed sensor connection
4I) W 10. Rear speed sensor12. O-ring
NOTE(1) Reverse the removal procedures to reinstall.(2) +e : Refer to “Service Points of Removal”.
(3) I)+ : Refer to “Service Points of Installation”.(4) m : Non-reusable parts

Care must be taken not to scratch or scar the rotor’stoothed surface, and not to drop it.
If the rotor’s toothed surface is chipped or the rotor is
deformed, it might not be able to accurately sense the
wheel rotation speed and the system as a result might
__ r-14A¬ perform normally.
4. REMOVAL OF FRONT SPEED SENSORRemove the mounting bolts which hold the speed sensor
bracket to the knuckle, and then remove the speed sensor.
Caution
5-82BRAKES - Wheel Speed Sensor SERVICE POINTS OF REMOVAL
1. REMOVAL OF THE FRONT TOOTHED ROTOReRefer to GROUP Z-Hub and Knuckle.
Caution
Be careful when handling the pole piece at the tip of
the speed sensor and the toothed edge of the rotor so
as not to damage them by striking against other parts.
II14A0215
+ont weed sensor Rear meed sensor
Pole
piecePole piece14R0144
6. REMOVAL OF REAR TOOTHED ROTOR’For FWD vehicles refer to GROUP
17-Rear Axle Hub, for
AWD vehicles refer to GROUP
3-Axle Shaft.
Cautionr*
Care must be taken not to scratch or scar the rotor’stoothed surface, and not to drop it.
If the rotor’s toothed surface is chipped or the rotor is
deformed, it might not be able to accurately
sense the
wheel rotation speed and the system as a result might
not perform normally.
10. REMOVAL OF REAR SPEED SENSORRemove the speed sensor bracket and rear axle spindle
installation nut, and then remove the speed sensor.
Caution
Be careful when handling the pole piece at the tip of
the speed sensor and the toothed edge of the rotor
SO
as not to damage them by striking against other parts.
INSPECTION
SPEED SENSOR CHECK
(1) Check whether any metallic foreign material has adhered to
the pole piece at the speed sensor tip, and, is so, remove it.Also check whether the pole piece is damaged, and, if so,
hreplace it with a new one.
‘J

BRAKES - Wheel Speed Sensor 5-83
Front
Rear

14AO04814R0146
0R
Qfs0
0 (-Jor
L/
14AOO47
NOTEThe pole piece can become magnetized because of the
magnet built into the speed sensor, with the result that
metallic foreign material easily adheres to it. Moreover, the
pole piece may not be able to function to correctly sense
the wheel rotation speed if it is damaged.
(2) Measure the resistance between the speed sensor termi-
nals.Standard value:
0.8-1.2 kQIf. the internal resistance of the speed sensor is not within
the standard value, replace it with a new speed sensor.
(3) Check the speed sensor cable for breakage, damage or
disconnection; replace with a new one if a problem is
found.
NOTE
When checking for cable damage, remove the cable clamppart from the body and then bend and pull the cable near
the clamp to check whether or not temporary disconnec-
tion occurs.
TOOTHED ROTOR CHECKCheck whether rotor teeth are broken or deformed, and, if so,
replace the rotor.
SERVICE POINTS OF INSTALLATION
11. INSTALLATION OF REAR SPEED SENSOR BRACKET
Assemble the speed sensor and the speed sensor bracket.
NOTEThe shape is different for the left and right speed sensor
brackets. Each bracket has an identification symbol, so be
sure to note these symbols and install correctly.
R: Indicates that the bracket is for the right wheel.
L: Indicates that the bracket is for the left wheel.

BRAKES - G-sensor /Electronic Control Unit 5-87
I
14AO198(3) Slowly inclining the G-sensor in the direction of reverse
vehicle travel, check that there is no conductance above a
sensor angle of 30 degrees.
ELECTRONIC CONTROL UNIT ABS>NOSOZAEREMOVAL AND INSTALLATION
Pre-removal Operation
@Removal of the Quarter Trim (R.H.)(Refer to GROUP 23-Trim.)IPost-installation Operation
4*Installation of the
Quarter TrimI1 (RIt?.) (Refer to GROUP 23-Trim.)1
14AO584
Removal steps
4*1. Electronic control unit connection
l +2. Electronic control unit3. Bracket
NOTE(I) Reverse the removal procedures to reinstall.(2) 4e : Refer to “Service Points of Removal”.(3) l + : Refer to “Service Points of Installation”.
SERVICE POINTS OF REMOVAL
1. DISCONNECTION OF ELECTRONIC CONTROL UNIT
Unlock the connector and take the connector out.