Mitsubishi Montero Sport (2004+). Manual - part 810

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS) <4WD>

35C-47

NOTE: After inspecting junction block connector D-02, D-09
and stoplight switch connector C-66, inspect the wire. If junc-
tion block connector D-02, D-09, or stoplight switch connector
C-66 is damaged, repair or replace it. Refer to GROUP 00E,
Harness Connector Inspection

P.00E-2

. If the connector has

been repaired or replaced, go to Step 8.
Q: Is the harness wire between fusible link No.8 and

stoplight switch connector C-66 (terminal No.2)
damaged?
YES : Repair it and then go to Step 8.
NO : Go to Step 8.

STEP 8. Recheck for diagnostic trouble code.

Q: Does diagnostic trouble code 33 reset?

YES : Return to Step 1.
NO : The procedure is complete.

AC201951

CONNECTOR : D-02

D-02(GR)

D-02
HARNESS CONNECTOR:
COMPONENT SIDE

AC201952

CONNECTOR : D-09

D-09
HARNESS CONNECTOR:
COMPONENT SIDE

8 7 6

AK303629AB

MB991911

MB991827

MB991824

16-PIN

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS) <4WD>

35C-48

DTC 41, 42, 43 : Solenoid Valve inside Hydraulic Unit
DTC 51: Hydraulic Unit Valve Relay Open or Short Circuit
DTC 53: Malfunction of Hydraulic Unit

CIRCUIT OPERATION
The ABS-ECU power is supplied to the ABS-ECU
(terminal 31, 33) from the fusible link 14.

ABS DTC SET CONDITIONS
DTC41, 42, 43 are set in the following cases:

• If there is an open or short circuit in the ABS-ECU

power circuit (solenoid valve, motor).

• If there is a malfunction in hydraulic unit inner cir-

cuit.

TROUBLESHOOTING HINTS (The most likely
causes for these DTCs to set are:)

• Damaged wiring harness or connector

• Malfunction of the hydraulic unit (integrated with

ABS-ECU)

Solenoid Valve and Motor Power Supply Circuit

AC004837

CONNECTOR: A-86

A-86 (GR)

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS) <4WD>

35C-49

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: MUT-III USB Cable

• MB991911: MUT-III Main Harness B

STEP 1. Measure the solenoid valve or motor power
supply circuit at ABS-ECU connector A-86.

(1) Disconnect connector A-86 and measure at the harness

side.

(2) Measure the voltage between terminal 31 and ground or 33

and ground.

Q: Is battery positive voltage (approximately 12 volts)

present?
YES : Replace the hydraulic unit (integrated with ABS-ECU)

and then go to Step 3.

NO : Go to Step 2.

STEP 2. Check the harness wire between fusible link
number 14 and ABS-ECU connector A-86 (terminal No.31
and 33).

Q: Is any harness wire between fusible link number 9 and

ABS-ECU connector A-86 (terminal No.31 and 33)
damaged?
YES : Repair it and then go to Step 3.
NO : Go to Step 3.

AC201944

CONNECTOR : A-86

A-86(GR)

A-86 HARNESS
CONNECTOR:
COMPONENT SIDE

32
34

31
33

AC202692

32
34

31
33

A-86 HARNESS CONNECTOR:
COMPONENT SIDE

AC201944

CONNECTOR : A-86

A-86(GR)

A-86 HARNESS
CONNECTOR:
COMPONENT SIDE

32
34

31
33

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS) <4WD>

35C-50

STEP 3. Recheck for diagnostic trouble code.

Q: Do diagnostic trouble codes 41, 42, 43, 51 and 53 reset?

YES : Go to Step 1.
NO : The procedure is complete.

SYMPTOM CHART

M1352011400653

NOTE: If steering movements are made when driving at high speed, or when driving on road surfaces with
low frictional resistance, or when passing over bumps, the ABS may operate although sudden braking is not
being applied. Because of this, when getting information from the customer, check if the problem occurred
while driving under such conditions as these.
During ABS operation, the brake pedal may vibrate a little or may not be able to be pressed. Such conditions
are due to intermittent changes in hydraulic pressure inside the brake line to prevent the wheels from locking.
This is normal.

AK303629AB

MB991911

MB991827

MB991824

16-PIN

SYMPTOM

INSPECTION
PROCEDURE
NO.

REFERENCE
PAGE

Communication with scan tool is not
possible.

Communication with all systems is
not possible.

−

GROUP13A,
Diagnosis