Mitsubishi Montero Sport (2004+). Manual - part 800

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS) <4WD>

35C-7

HOW TO READ DIAGNOSTIC TROUBLE CODE 
WITH ABS WARNING LIGHT

Required Special Tool:

• MB991529: Diagnostic Trouble Code Check Harness

1. Use special tool MB991529 to ground number 1 terminal of 

the data link connector.

2. Turn the ignition switch to the "ON" position. 

3. Read out a diagnostic trouble code by observing how the 

warning light flashes.

4. Turn the ignition switch to the "LOCK" (OFF) position.
5. Disconnect special tool MB991529.

MB991502

16 PIN

AC004017AC

DATA LINK
CONNECTOR

AC004503 AB

ABS WARNING LIGHT

WHEN DIAGNOSTIC TROUBLE CODE NO.24 IS 
SET

WHEN NO DIAGNOSTIC TROUBLE CODE IS 
SET

ACX01777

ILLUMINATED

SWITCHED
OFF

PAUSE
TIME 3s

TENS
SIGNAL

PLACE
DIVISION
2s

UNITS
SIGNAL

1.5s

0.5s

0.5s

AB

ACX01778

ILLUMINATED

SWITCHED
OFF

0.25s

AB

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS) <4WD>

35C-8

HOW TO ERASE DIAGNOSTIC TROUBLE CODE 
WITH SPECIAL OPERATION FOR BRAKE PEDAL

Required Special Tool:

• MB991529: Diagnostic Trouble Code Check Harness

1. Use special tool MB991529 to ground number 1 terminal of 

the data link connector.
NOTE:  If the ABS-ECU functions have stopped due to the 
fail-safe function, the diagnostic trouble code cannot be 
erased.

2. Depress the brake pedal and hold it.
3. Turn the ignition switch to the "ON" position. 
4. After turning the ignition switch to the "ON" position, release 

the pedal within three seconds. Repeat this process of 
pressing and releasing the brake pedal 10 continuous times.

5. Turn the ignition switch to the "LOCK" (OFF) position. 
6. Disconnect special tool MB991529.

MB991502

16 PIN

AC004017AC

DATA LINK
CONNECTOR

AC004504

WITH-
IN 1S

WITH-
IN 1S

WITH-
IN 1S

WITH-
IN 1S

WITH-
IN 1S

WITH-
IN 1S

WITH-
IN 1S

WITH-
IN 1S

WITH-
IN 1S

WITH-
IN 1S

1S

1ST

2ND

3RD 4TH

5TH 6TH

7TH

8TH

9TH 10TH

ERASING
COMPLETED

AB

IGNITION SWITCH

BRAKE SWITCH

ABS WARNING LIGHT

DIAGNOSTIC TROUBLE
CODE MEMORY

ON

OFF

ON

OFF

ON

OFF

WITHIN
3S

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS) <4WD>

35C-9

HOW TO READ DATA LIST

Required Special Tools:

•  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

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "Interactive Diagnosis" from the start-up screen.
4. Select "System Select."
5. Choose "ABS" from the "CHASSIS" tab.
6. Select "MITSUBISHI."
7. Select "Data List."
8. Choose an appropriate item and select the "OK" button.

AK303629AB

MB991911

MB991827

MB991824 

16-PIN

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS) <4WD>

35C-10

HOW TO PERFORM ACTUATOR TEST

Required Special Tools:

•  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

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "Interactive Diagnosis" from the start-up screen.
4. Select "System Select."
5. Choose "ABS" from the "CHASSIS" tab.
6. Select "MITSUBISHI."
7. Choose "Actuator Test" from "ABS" screen.
8. Choose an appropriate item and select the "OK" button.

AK303629AB

MB991911

MB991827

MB991824 

16-PIN