Mitsubishi Montero (2002-2004). Manual - part 1063

ON-VEHICLE SERVICE

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-123

Diagnosis Table

8. After inspection, disconnect the scan tool immediately after 

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

SOLENOID VALVE CHECK

M1352010700071

Measure the resistance between the following solenoid valve 
terminals.

• Control solenoid valve IN (FR): Between terminals (19) − 

(34) 

• Control solenoid valve OUT (FR): Between terminals (20) − 

(34) 

• Control solenoid valve IN (FL): Between terminals (21) − 

(34)

• Control solenoid valve OUT (FL): Between terminals (22) − 

(34)

• Control solenoid valve IN (RR): Between terminals (15) − 

(34) 

• Control solenoid valve OUT (RR): Between terminals (16) − 

(34) 

• Control solenoid valve IN (RL): Between terminals (13) − 

(34) 

• Control solenoid valve OUT (RL): Between terminals (14) − 

(34)

• Select solenoid valve (FR): Between terminals (18) − (34)

• Select solenoid valve (FL): Between terminals (17) − (34)

Standard value: Control solenoid valve IN: 4.75 

− 5.25 

Ω Control solenoid valve OUT: 2.0 − 2.4 Ω Select sole-

noid valve: 3.5 

− 3.9 Ω

IN THE EVENT OF A DISCHARGED BATTERY

M1352003500365

Refer to GROUP 35C 

− On-vehicle Service 

P.35C-

203

.

NO.

OPERATION

NORMAL 
CONDITION

ABNORMAL 
CONDITION

PROBABLE 
CAUSE

REMEDY

01

1. Depress brake pedal to 

lock wheel.

2. Using scan tool 

MB991502, select the 
wheel to be checked and 
force the actuator to 
operate.

3. Turn the selected wheel 

manually to check the 
change of brake force.

Brake force 
releases for 3 
seconds after 
locking.

Wheel does 
not lock when 
brake pedal is 
depressed.

Clogged brake line 
other than hydraulic 
brake booster 
(HBB)

Check and 
clean brake 
line

02

Clogged HBB

Replace HBB

03

Brake force is 
not released

Incorrect HBB brake 
tube connection

Connect 
correctly

04

HBB solenoid valve 
not functioning 
correctly

Replace HBB

ACX01116 AB

ABS CONTROL UNIT

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-124

ABS CONTROL UNIT

REMOVAL AND INSTALLATION

M1352009800074

Refer to GROUP 35C, M-ASTC-ECU 

P.35C-205

.

WHEEL SPEED SENSOR

REMOVAL AND INSTALLATION

M1352008300407

NOTE: The front and rear ABS rotors are integrated 
with the drive shaft and cannot be disassembled.

Post-installation Operation
• ABS Sensor Output Voltage Measurement (Refer to 

P.35B-119

).

AC204256AB

4

5

6

3

1

2

<FRONT>

<REAR>

7

FRONT WHEEL SENSOR 
REMOVAL STEPS

<<A>>

1. FRONT ABS SENSOR
2. FRONT ABS ROTOR PROTECTOR
3. HEAT PROTECTOR
4. FRONT ABS ROTOR WITH 

DRIVESHAFT (REFER TO GROUP 
26, DRIVESHAFT 

P.26-23

.)

REAR WHEEL SENSOR 
REMOVAL STEPS

<<B>>

5.

REAR ABS SENSOR

6.

REAR ABS ROTOR PROTECTOR

7.

REAR ABS ROTOR WITH 
DRIVESHAFT (REFER TO 
GROUP 27, DRIVESHAFT 

P.27-

18

.)

WHEEL SPEED SENSOR

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-125

REMOVAL SERVICE POINTS

.

<<A>> FRONT ABS SENSOR REMOVAL
1. Remove the three splash shield clips and the two bolts 

shown in the illustration, and then disconnect the front ABS 
sensor connector.

CAUTION

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

.

<<B>> REAR ABS SENSOR REMOVAL

CAUTION

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

INSPECTION

M1352008400318

.

ABS SENSOR CHECK
1. Check whether any metallic foreign material has adhered to 

the projection at the ABS 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 ABS sensor, causing foreign material to 
easily adhere to it. The projection may not be able to cor-
rectly sense the wheel rotation speed if foreign matter is on 
it or if it is damaged.

2. Measure the resistance between the ABS sensor terminals.

Standard value: 1.0 

− 1.5 kΩ

3. If the internal resistance of the ABS sensor is not within the 

standard value, replace it with a new ABS sensor.

ACX01118AB

SPLASH SHIELD

FRONT

ACX01119 AB

REAR SIDE

FRONT SIDE

G-SENSOR

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-126

4. Remove all connections from the ABS sensor. The circuit 

should be open between terminals (1) and (2) and the body 
of the ABS sensor. If the circuit is not open, replace with a 
new ABS sensor.

5. Check the ABS 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 ABS ROTOR CHECK
Check whether the ABS rotor teeth are broken or deformed. 
Replace the driveshaft UJ assembly for the front side or the 
driveshaft BJ assembly for the rear side, respectively, if the 
teeth are damaged or deformed.

G-SENSOR

 REMOVAL AND INSTALLATION

M1352010100154

Refer to GROUP 35C, G and Yaw Rate Sensor 

P.35C-207

.

SPECIFICATIONS

FASTENER TIGHTENING SPECIFICATIONS

M1352012400270

SERVICE SPECIFICATIONS

M1352000300403

ACX01120 AB

ITEM

SPECIFICATIONS

M-ASTC-ECU
M-ASTC-ECU mounting nut

5.0 

± 1.0 N⋅m (44 ± 9 in-lb)

HBB buzzer bracket mounting nut

5.0 

± 1.0 N⋅m (44 ± 9 in-lb)

HBB buzzer mounting nut

5.0 

± 1.0 N⋅m (44 ± 9 in-lb)

G-sensor
G-sensor bracket mounting nut

5.0 

± 1.0 N⋅m (44 ± 9 in-lb)

G-sensor mounting nut

5.0 

± 1.0 N⋅m (44 ± 9 in-lb)

ITEMS

STANDARD VALUE

Control solenoid valve resistance 

Ω

IN

4.75 

− 5.25

OUT

2.0 

− 2.4

Select solenoid valve resistance 

Ω

3.5 

− 3.9

ABS sensor internal resistance k

Ω

1.0 

− 1.5