Mitsubishi 380. Manual — part 967

HYDRAULIC UNIT

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-93

HYDRAULIC UNIT

REMOVAL AND INSTALLATION

M1352008600464

NOTE: The ABS-ECU is integrated in the hydraulic unit.

Pre-removal Operation
• Strut Tower Bar Removal (Refer to GROUP 42, Strut

Tower Bar

P.42-12

).

• Brake Fluid Draining

Post-installation Operation
• Brake Fluid Filling

• Brake Line Bleeding (Refer to GROUP 35A, On-vehicle

Service

− Bleeding

P.35A-16

).

• Hydraulic Unit Check (Refer to

P.35B-90

).

• Strut Tower Bar Installation (Refer to GROUP 42, Strut

Tower Bar

P.42-12

).

35DB104A

15 ± 2 N·m
12 ± 1 ft-lb

2

4

5

2

3

1

3

REMOVAL STEPS

•

BATTERY AND BATTERY TRAY

•

HARNESS CONNECTORS
AROUND THE ABS-ECU

•

HARNESS CLAMPS AROUND THE
ABS-ECU

•

CONNECTOR BRACKETS AROUND
THE ABS-ECU <3.8L ENGINE>

<<A>>

1. ABS-ECU HARNESS CONNECTOR

>>A<<

2. BRAKE TUBE CONNECTION
3. ABS EQUIPMENT BOLT AND NUTS

<<B>>

4. BRAKE MODULATOR HYDRAULIC

UNIT (HYDRAULIC UNIT AND
ABS-ECU)

5. BRAKE HYDRAULIC UNIT

BRACKET

REMOVAL STEPS (Continued)

HYDRAULIC UNIT

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-94

REMOVAL SERVICE POINTS

.

<<A>> ABS-ECU HARNESS CONNECTOR DIS-
CONNECTION

Move the lock lever of the ABS-ECU connector as shown in the
illustration, and then disconnect the harness connector.

.

<<B>> BRAKE MODULATOR HYDRAULIC UNIT
(HYDRAULIC UNIT AND ABS-ECU) REMOVAL

WARNING

The hydraulic unit is heavy. Use care when removing
it.

CAUTION

• The hydraulic unit cannot be disassembled. Never

loosen its nuts or bolts.

• Do not drop or shock the hydraulic unit.
• Do not turn the hydraulic unit upside down or lay it on

its side.

INSTALLATION SERVICE POINT

.

>>A<< BRAKE TUBE CONNECTION

Connect the tubes to the hydraulic unit assembly as shown in
the illustration.

1. To the front brake (LH)
2. To the rear brake (RH)
3. To the rear brake (LH)
4. To the front brake (RH)
5. From the master cylinder (secondary)
6. From the master cylinder (primary)

35DB105A

LOCK LEVER

Connector

A-02

35DB106A

6

5

2

3

1

4

WHEEL SPEED SENSOR

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-95

WHEEL SPEED SENSOR

REMOVAL AND INSTALLATION

M1352008300548

NOTE: Front wheel speed rotors are integrated with
the BJ assembly of the drive shaft and cannot be dis-
assembled.

NOTE: Rear wheel speed rotors are integrated with
the rear hub assembly and cannot be disassembled.

Post-installation Operation
• Wheel Speed Sensor Output Signal Voltage Measure-

ment (Refer to

P.35B-88

).

<REAR>

4

<RH>

35DB114A

<FRONT>

1

2

3

4

<LH>

<REAR>

FRONT WHEEL SPEED SENSOR
REMOVAL STEPS

•

SPLASH SHIELD (REFER TO
GROUP 42, FENDER

P.42-10

).

<<A>>

1.

FRONT WHEEL SPEED SENSOR

2.

FRONT WHEEL SPEED ROTOR
(REFER TO GROUP 26,
DRIVESHAFT ASSEMBLY

P.26-13

).

REAR WHEEL SPEED SENSOR
REMOVAL STEPS

<<A>>

3.

REAR WHEEL SPEED SENSOR

4.

REAR WHEEL SPEED ROTOR
(REFER TO GROUP 27, REAR
AXLE HUB ASSEMBLY

P.27-6

).

WHEEL SPEED SENSOR

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-96

REMOVAL SERVICE POINT

.

<<A>> FRONT WHEEL SPEED SENSOR/REAR
WHEEL SPEED SENSOR REMOVAL

CAUTION

Be careful when handling the projection at the tip of the
wheel speed sensor and the toothed edge of the wheel
speed rotor so as not to damage them by contacting other
parts.

INSPECTION

M1352008400459

WHEEL SPEED SENSOR CHECK

1. Check whether any metallic foreign material has adhered to

the projection at the speed sensor tip. Remove any foreign
material. Also check whether the pole piece is damaged.
Replace it with a new one if it is damaged.

NOTE: The projection can become magnetized due to the
magnet inside the wheel speed sensor, and may cause for-
eign material to adhere to it. The projection may not be able
to correctly sense the wheel rotation speed if foreign matter
is on it or if it is damaged.

2. Check the wheel 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
clamp part from the body and then gently bend and pull the
cable near the clamp.

TOOTHED WHEEL SPEED ROTOR CHECK

Check whether the wheel speed rotor teeth are broken or
deformed. Replace the BJ assembly of the drive shaft, or the
rear hub assembly, respectively, if the teeth are damaged or
deformed.

AC211046AB

AC000965