Mitsubishi Montero Sport (2004+). Manual — part 794

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS) <RWD>

35B-57

ACTUATOR TEST REFERENCE

M1352011600657

The scan tool activates the following actuators for testing.
NOTE: If the ABS-ECU is inoperative, actuator testing cannot be carried out.
NOTE: Actuator testing is only possible when the vehicle is stationary. If the vehicle speed during actuator
testing exceeds 10 km/h (6 mph), forced actuation will be canceled.

ACTUATOR TEST SPECIFICATIONS

MUT-III
SCAN
TOOL
DISPLAY

NO.

ITEM

FR SOL
VALVE

01

Solenoid valve
for front-right
wheel

Solenoid valves and
pump motor in the
hydraulic unit (simple
inspection mode)

FL SOL
VALVE

02

Solenoid valve
for front-left
wheel

REAR
SOL. V.

03

Solenoid valve
for rear wheel

AC004863 AB

A

B

C

ACTIVATION PATTERN

START OF
FORCED
ACTION

END OF
FORCED
ACTION

ON

OFF

SOLENOID
VALVE

PUMP
MOTOR

NOTE
A: HYDRAULIC PRESSURE INCREASES
B: HYDRAULIC PRESSURE HOLDS
C: HYDRAULIC PRESSURE DECREASES

48 ms

1 s

3 s

8 ms

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS) <RWD>

35B-58

CHECK AT ABS-ECU

M1352011800628

TERMINAL VOLTAGE CHECK CHART

NOTE: Do not measure terminal voltage for approximately three seconds after the ignition switch is turned to
the "ON" position. The ABS-ECU performs the initial check during that period.

1. Measure the voltages between terminals (32) or (34) (ground terminals) and each respective terminal.
2. The terminal layouts are shown in the illustrations.

AC004864

CONNECTOR
TERMINAL
NO.

SIGNAL

INSPECTION REQUIREMENT

NORMAL
CONDITION

9

ABS-ECU power supply Ignition switch: "ON"

Battery positive
voltage

Ignition switch: "START"

0 V

13

Input from stoplight
switch

Ignition switch:
"ON"

Stoplight switch: "ON"

Battery positive
voltage

Stoplight switch: "OFF"

1 V or less

16

Control output to ABS
warning light relay

Ignition switch:
"ON"

The light is switch off.

2 V or less

The light is illuminated.

Battery positive
voltage

23

Scan tool

Connect the scan tool.

Serial
communication
with scan tool

Do not connect the scan tool.

1 V or less

24

Input from diagnostic
indication selection

Connect the scan tool.

0 V

Do not connect the scan tool.

Approximately 12
V

31

Solenoid valve power
supply

Always

Battery positive
voltage

33

Motor power supply

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS) <RWD>

35B-59

RESISTANCE AND CONTINUITY BETWEEN HARNESS-SIDE CONNECTOR
TERMINALS

1. Turn the ignition switch to the "LOCK" (OFF) position and disconnect the ABS-ECU connectors before

checking resistance and continuity.

2. Check between the terminals indicated in the table below.
3. The terminal layouts are shown in the illustration.

AC004865

CONNECTOR
TERMINAL NO.

SIGNAL

NORMAL CONDITION

1

− 2

Rear-right wheel speed sensor

1.3

− 1.5 kΩ

3

− 4

Rear-left wheel speed sensor

1.3

− 1.5 kΩ

7

− 14

RWD detection

Continuity (Less than 2 ohms)

18

−19

Front-right wheel speed sensor

1.3

− 1.5 kΩ

20

− 21

Front-left wheel speed sensor

1.3

− 1.5 kΩ

32

− body ground

Solenoid valve ground

Continuity (Less than 2 ohms)

34

− body ground

Motor ground

Continuity (Less than 2 ohms)

SPECIAL TOOLS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS) <RWD>

35B-60

SPECIAL TOOLS

M1352000600749

TOOL

TOOL NUMBER AND
NAME

SUPERSESSION

APPLICATION

MB991958

A: MB991824
B: MB991827
C: MB991910
D: MB991911
E: MB991914
F: MB991825
G: MB991826

MUT-III sub assembly

A: Vehicle

communication
interface (V.C.I.)

B: MUT-III USB cable
C: MUT-III main harness

A (Vehicles with CAN
communication
system)

D: MUT-III main harness

B (Vehicles without
CAN communication
system)

E: MUT-III main harness

C (for Daimler Chrysler
models only)

F: MUT-III measurement

adapter

G: MUT-III trigger

harness

MB991824-KIT
NOTE: G: MB991826
MUT-III trigger harness is
not necessary when
pushing V.C.I. ENTER
key.

Checking for ABS system

CAUTION

MUT-III main harness B
(MB991911) should be
used. MUT-III main
harness A and C should
not be used for this
vehicle.

MB991529
Diagnostic trouble code
check harness

Tool not necessary if scan
tool (MUT-III) is available.

For checking of ABS
(Diagnostic trouble code
display when using the
ABS warning light)

MB991910

MB991826

MB991958

MB991911

MB991914

MB991824

MB991827

MB991825

DO NOT USE

A

B

C

D

E

F

G

DO NOT USE

MB991529