Mitsubishi Lancer Evolution IX. Manual - part 528

HYDRAULIC UNIT

ANTI-SKID BRAKING SYSTEM (ABS)

35B-143

HYDRAULIC UNIT

REMOVAL AND INSTALLATION

M1352008600549

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

<LH DRIVE VEHICLES>

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

Pre-removal Operation
• Brake Fluid Draining

Post-installation Operation
• Brake Fluid Filling

• Bake Line Bleeding (Refer to 

P.35A-7

).

• Hydraulic Unit Check (Refer to 

P.35B-140

).

AC100173 AC

15 ± 2 N·m

25 ± 6 N·m

25 ± 6 N·m

4

2

2

2

3

1

2

Removal steps 

<<

A

>>

1. ABS-ECU harness connector

>>

A

<< 2. Brake tube connection

<<

B

>>

3. Brake modulator hydraulic unit 

(hydraulic unit and ABS-ECU)

4. Brake hydraulic unit bracket

Removal steps (Continued)

HYDRAULIC UNIT

ANTI-SKID BRAKING SYSTEM (ABS)

35B-144

<RH DRIVE VEHICLES>

Pre-removal Operation
• Brake Fluid Draining
• Air Intake Hose and Air Cleaner Removal

Post-installation Operation
• Brake Fluid Filling
• Bake Line Bleeding (Refer to 

P.35A-7

).

• Hydraulic Unit Check (Refer to 

P.35B-140

).

• Air Intake Hose and Air Cleaner Installation

AC311045AB

15 ± 2 N·m

25 ± 6 N·m

25 ± 6 N·m

4

2

2

2

3

1

2

Removal steps 

<<

A

>>

1. ABS-ECU harness connector

>>

A

<< 2. Brake tube connection

<<

B

>>

3. Brake modulator hydraulic unit 

(hydraulic unit and ABS-ECU)

4. Brake hydraulic unit bracket

Removal steps (Continued)

HYDRAULIC UNIT

ANTI-SKID BRAKING SYSTEM (ABS)

35B-145

REMOVAL SERVICE POINTS
<<A>> ABS-ECU HARNESS CONNECTOR 
DISCONNECTION

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

AC211555

AB

Lock lever

AC100240AB

6

5

4

3

2

1

ABS SENSOR

ANTI-SKID BRAKING SYSTEM (ABS)

35B-146

ABS SENSOR

REMOVAL AND INSTALLATION

M1352020700061

NOTE: The wheel speed rotors are integrated with 
the drive shaft and cannot be disassembled.

Post-installation Operation
• Wheel Speed Sensor Output Voltage Measurement 

(Refer to 

P.35B-138

).

AC211696AB

<Front>

<Rear>

1

2

3

4

Front wheel speed sensor 
removal steps 

<<

A

>>

1.

Front wheel speed sensor

2.

Front wheel speed rotor (Refer to 
GROUP 26, Drive Shaft Assembly 

P.26-11

).

Rear wheel speed sensor 
removal steps 

<<

A

>>

>>

A

<<

3.

Rear wheel speed sensor

4.

Rear wheel speed rotor (Refer to 
GROUP 27, Drive Shaft Assembly 

P.27-36

).