Mitsubishi Grandis. Manual - part 916

HYDRAULIC UNIT

ANTI-SKID BRAKING SYSTEM (ABS)

35B-79

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

Operate the lock lever to disconnect the ABS-ECU 
harness connector as shown.

<<B>> HYDRAULIC UNIT (INTEGRATED 
WITH 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.

AC303013

15 ± 2 N·m

2

AC

2

4

1

5

3

2

4

Removal steps

<<A>>

1.

ABS-ECU harness connector

2.

Brake tube connection

•

Brake tube and master cylinder 
connection <LH drive vehicles>

•

Brake tube and brake hose (LH) 
<LH drive vehicles>

<<B>>

3.

Hydraulic unit (ABS-ECU)

4.

Hydraulic unit bracket insulator

5.

Hydraulic unit bracket

AC311278AB

Oil reservoir

Lock lever

ABS SENSOR

ANTI-SKID BRAKING SYSTEM (ABS)

35B-80

ABS SENSOR

REMOVAL AND INSTALLATION

M1352008300667

CAUTION

The vehicle speed detection encoder collects any metallic particle easily, because it is magnetized. 
Make sure that the encoder should not collect any metallic particle. Check that there is not any 
trouble prior to reassembling it.

NOTE: The vehicle speed detection encoder is 
integrated with the front hub and the rear hub, which 
is non-serviceable.

Pre-removal operation
• Engine cover removal (Refer to GROUP 11A, Camshaft 

and valve stem seal 

P.11A-16

.) <Front: left>

• Air cleaner body assembly removal (Refer to GROUP 15, 

Air Cleaner 

P.15-3

.) <Front: left>

Post-installation Operation
• Air cleaner body assembly installation (Refer to GROUP 

15, Air Cleaner 

P.15-3

.) <Front: left>

• Engine cover installation (Refer to GROUP 11A, 

Camshaft and valve stem seal 

P.11A-16

.) <Front: left>

AC313585

AB

6

9

3

<Front>

<Rear>

10

2

5

4

1

7

8

Front wheel speed sensor 
removal steps

1.

Bolt (front wheel speed sensor and 
knuckle connection)

2.

front wheel speed sensor bracket

<<A>>

•

Front wheel speed sensor 
connector

>>A<<

3.

Front wheel speed sensor grommet

4.

Front wheel speed sensor
Rear wheel speed sensor 
removal steps

5.

Bolt (rear wheel speed sensor and 
trailing arm connection)

6.

Bolt (rear wheel speed sensor and 
rear suspension lower arm 
assembly connection)

7.

Bolt (rear wheel speed sensor and 
rear suspension crossmember 
connection)

8.

Bolt (rear wheel speed sensor and 
body connection)

•

Rear wheel speed sensor 
connector

9.

Rear wheel speed sensor

10. Heat protector

Rear wheel speed sensor 
removal steps (Continued)

ABS SENSOR

ANTI-SKID BRAKING SYSTEM (ABS)

35B-81

REMOVAL SERVICE POINT
<<A>> FRONT WHEEL SPEED SENSOR 
CONNECTOR REMOVAL <LH>

NOTE: The front wheel speed sensor connector is in 
the harness cover as shown. 

INSTALLATION SERVICE POINT
>>A<<  FRONT WHEEL SPEED SENSOR 
GROMMET REMOVAL

Install the front wheel speed sensor grommet to the 
body panel so that there is no space between them.

INSPECTION

M1352008400523

ABS SENSOR CURRENT CHECK

CAUTION

Do not connect the battery terminals in reverse 
as the wheel speed sensor may be damaged.
1. Use special tool probe MB991222 to connect the 

circuit tester and measure current flown through 
wheel speed sensor with wheel speed sensor 
separated from the vehicle.

Standard value: 5.9 

− 8.4mA

2. If the measurement value is outside the standard 

value, replace the wheel speed sensor with a new 
one.

WHEEL SPEED SENSOR INSULATION 
CHECK

AC302191

AB

Harness cover

Front wheel speed sensor
connector <LH>

AC302907AB

Front wheel speed
sensor grommet

Body panel

AC303389AB

MB991222

AC208514 AB

ABS SENSOR

ANTI-SKID BRAKING SYSTEM (ABS)

35B-82

1. Measure the insulation resistance from terminals 

1 and 2 to the wheel speed sensor and body with 
the wheel speed sensor separated from the 
vehicle.

Standard value: 5 M

Ω or more

2. If the insulation resistance is outside the standard 

value, replace the wheel speed sensor with a new 
one.