Mitsubishi Montero (2002-2004). Manual - part 1052

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-79

STEP 9. Check the harness wire between the M-ASTC-ECU 
connector E-120 terminal 59 and pressure sensor 
connector B-55 terminal 1.
Q: Is the harness wire between the M-ASTC-ECU 

connector E-120 terminal 59 and pressure sensor 
connector B-55 terminal 1 damaged?
YES : Replace it and go to Step 10.
NO :  This malfunction is intermittent. Refer to GROUP 00, 

How to Use Troubleshooting/Inspection Service 
Points 

− How to Cope With Intermittent Malfunction 

P.00-6

.

STEP 10. Recheck for diagnostic trouble code.
Q: Do DTC 61 reset?

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

AC203901

AC204627AG

CONNECTOR: E-120

E-120

HARNESS CONNECTOR: 
COMPONENT SIDE

E-120

AC204772AC

B-55(GR)

CONNECTOR: B-55

1

3

2

HARNESS CONNECTOR:
COMPONENT SIDE

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-80

SYMPTOM CHART

M1352011400437

NOTE: If steering movements are made when driv-
ing at high speed, or when driving on road surfaces 
with low frictional resistance, or when passing over 
bumps, the ABS may operate although sudden brak-
ing is not being applied. Because of this, when get-
ting information from the customer, check if the 
problem occurred while driving under such condi-
tions as these.

NOTE: 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 hydrau-
lic pressure inside the brake line to prevent the 
wheels from locking. This is normal.

SYMPTOMS

INSPECTION 
PROCEDURE 
NO.

REFERENCE 
PAGE

Communication between the scan tool and the whole system is not 
possible.

-

GROUP13A 

− 

Diagnosis 

P.13Ad-2

Communication with scan tool is not possible. (Communication with 
ABS only is not possible.) 

1

P.35B-81

When the ignition switch is turned to the "ON" position (engine stopped 
or after start-up), the ABS warning light does not illuminate. 

2

P.35B-88

The ABS warning light remains illuminated after the engine is started

3

P.35B-97

When ignition switch is turned to the "START" position, the ABS warning 
light does not illuminate.

4

P.35B-102

The ABS warning light flashes twice after the ignition switch is turned to 
the "ON" position. The light illuminates when the ignition switch is 
turned the "START" position, and when the ignition switch is returned to 
the "ON" position, it flashes once.

5

P.35B-106

Faulty ABS operation

6

P.35B-110

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-81

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 1: Communication with Scan Tool is not Possible. (Communication with ABS Only is not Possible.) 

AC204873

Data Link Connector Circuit

AB

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-82

.

CIRCUIT OPERATION
The diagnostic output is made from the M-ASTC-ECU 
(terminal 21) to the diagnostic output terminal (terminal 7) 
of the data link connector.

.

TECHNICAL DESCRIPTION (COMMENT)
When communication with the scan tool is not possible, 
the cause is probably an open circuit in the M-ASTC-ECU 
power circuit or an open circuit in the diagnostic output cir-
cuit.

.

TROUBLESHOOTING HINTS

• Blown fuse

• Damaged wiring harness and connector

• Malfunction of the M-ASTC-ECU

.

AC204677AC

CONNECTORS: D-28, D-29, D-118

D-28

D-29

D-118(B)

AC204384

D-116

AF

CONNECTORS: D-14, D-116

D-14

AC204547AD

CONNECTORS: D-208, D-210, D-211, D-212

D-208

D-212

JUNCTION BLOCK
(FRONT VIEW)

D-211(B)

D-210

AC204548 AB

CONNECTOR: E-111

E-111

AC203901AD

CONNECTORS: E-119, E-120

E-119

E-120