Mitsubishi Galant (2004+). Manual - part 541

HYDRAULIC UNIT

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-109

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-106

).

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

Tower Bar 

P.42-12

).

AC306183AB

15 ± 2 N·m
12 ± 1 ft-lb

4

5

2

3

1

2

3

2

REMOVAL STEPS

•

POWER STEERING OIL 
RESERVOIR (REFER TO GROUP 
37A, POWER STEERING HOSES 

P.37A-57

). <3.8L ENGINE>

•

HARNESS CONNECTORS 
AROUND THE ABS-ECU <3.8L 
ENGINE>

•

HARNESS CLAMPS AROUND THE 
ABS-ECU <3.8L ENGINE>

•

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

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-110

REMOVAL SERVICE POINTS

.

<<A>> ABS-ECU HARNESS CONNECTOR DISCONNEC-
TION
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.

Remove the hydraulic unit as shown, taking care not to dam-
age surrounding components such as the flexible suction hose 
<3.8L engine>.

AC304742

AB

LOCK LEVER

AC211808 AC

BRAKE MODULATOR
HYDRAULIC UNIT
(HYDRAULIC UNIT
AND ABS-ECU)

FLEXIBLE SUCTION HOSE

<3.8L ENGINE>

HYDRAULIC UNIT

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-111

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)

AC210718AC

6

5

2

3

1

4

WHEEL SPEED SENSOR

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-112

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 Voltage Measurement 

(Refer to 

P.35B-104

).

AC306191AB

<FRONT>

<REAR>

1

2

4

3

4

<RH>

<LH>

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

).