Mitsubishi Montero Sport (2004+). Manual — part 796

ON-VEHICLE SERVICE

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS) <RWD>

35B-65

10.Turn the wheel by hand and check the change in braking

force when the brake pedal is depressed. When using the
braking force tester, depress the brake pedal until the
braking force is at the following values, and check that the
braking force changes to the brake drag force in step 2
when the actuator is force-driven. The result should be as
shown in the diagram above.

11.If the result of inspection is abnormal, repair according to the

Diagnosis Table below.

12.After inspection, disconnect the scan tool MB991958

immediately after turning the ignition switch to the "LOCK"
(OFF) position.

Front wheel

785

− 981 N (176 − 220 lb)

Rear wheel

294

− 490 N (66 − 110 lb)

DIAGNOSIS TABLE

MUT-III
DISPLAY

OPERATION

INSPECTION
RESULT

JUDGMENT PROBABLE

CAUSE

REMEDY

01 FR SOL
VALVE
02 FL SOL
VALVE
03 REAR
SOL. V.

• Depress brake

pedal to lock
wheel.

• Using scan tool

MB991958, select
the wheel to be
checked and force
the actuator to
operate.

• Turn the selected

wheel manually to
check the change
of brake force.

Brake force is
released for
three seconds
after wheels
have been
locked.

Normal

−

−

Wheel does not
lock when brake
pedal is
depressed.

Abnormal

Clogged brake
line other than
hydraulic unit

Check and clean
brake line

Clogged
hydraulic circuit
in hydraulic unit

Replace
hydraulic unit
assembly

Brake force is
not released

Incorrect
hydraulic unit
brake tube
connection

Connect correctly

Hydraulic unit
solenoid valve
not functioning
correctly

Replace
hydraulic unit
assembly

ON-VEHICLE SERVICE

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS) <RWD>

35B-66

ABS RELAY CHECK

M1352011000138

DISCHARGED BATTERY

M1352003500569

WARNING

If the ABS is not operating, the vehicle posture will be
unstable during braking, do not drive the vehicle with
the ABS-ECU connector disconnected or with the
ABS not operating for any other reason.

If the engine is started using a booster cable when the battery
is completely flat, and the vehicle is then driven without waiting
for the battery to be recharged, the engine may misfire and it
may not be possible to drive the vehicle. This is because the
ABS consumes a large amount of current when carrying out its
initial checks. If this happens, recharge the battery fully.

BATTERY
VOLTAGE

TESTER
CONNECTION

SPECIFIED
CONDITION

Not applied

3

− 4

Less than 2 ohms

• Connect

terminal 2 to the
positive battery
terminal

• Connect

terminal 1 to the
negative battery
terminal

3

− 4

Open circuit

AC004866

MASTER CYLINDER AND BRAKE BOOSTER

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS) <RWD>

35B-67

MASTER CYLINDER AND BRAKE BOOSTER

REMOVAL AND INSTALLATION

M1352004000200

Refer to GROUP 35A, Master Cylinder and Brake
Booster

P.35A-28

.

MASTER CYLINDER DISASSEMBLY AND ASSEMBLY

M1352004500205

CAUTION

Do not disassemble the primary and secondary
and secondary piston assemblies

AC004911AB

BRAKE FLUID:
CONFORMING TO DOT 3 OR DOT 4

BRAKE MASTER CYLINDER KIT

2.5 N·m
22 in-lb

10

11

9

9

7

8

6

4

5

15

14

2

3

1

12

13

14

13

15

11

14

13

12

N

N

N

N

DISASSEMBLY STEPS

1. RESERVOIR CAP ASSEMBLY
2. DIAPHRAGM
3. RESERVOIR CAP
4. FILTER
5. BRAKE FLUID LEVEL SENSOR
6. FLOAT
7. RESERVOIR STOPPER BOLT
8. RESERVOIR

9. RESERVOIR SEAL

<<A>>

10. PISTON STOPPER BOLT
11. GASKET

<<A>>

12. PISTON STOPPER RING
13. PRIMARY PISTON ASSEMBLY
14. SECONDARY PISTON ASSEMBLY
15. MASTER CYLINDER BODY

DISASSEMBLY STEPS

MASTER CYLINDER AND BRAKE BOOSTER

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS) <RWD>

35B-68

DISASSEMBLY SERVICE POINT

.

<<A>> PISTON STOPPER BOLT/PISTON STOPPER RING
DISASSEMBLY
While depressing the piston, remove the piston stopper bolt
and piston stopper ring.

INSPECTION

M1352004100069

• Check the inner surface of the master cylinder body for cor-

rosion or pitting.

• Check the primary and secondary pistons for corrosion,

scoring wear or damage.

• Check the diaphragm for cracks and wear.

AC004913 AB

PISTON
STOPPER
BOLT

PISTON STOPPER RING