Mitsubishi Montero (2004+). Manual - part 1060

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-83

STEP 7. Check the pressure sensor connector B-55.
(1) Disconnect the pressure sensor connector B-55, and 

measure at the pressure sensor side.

(2) Turn the ignition switch to the "ON" position.
(3) Measure voltage between terminal 1 and ground.

Standard value: 0.14 

− 4.85 V

Q: Is the voltage within the standard value?

YES : Go to Step 8.
NO :  Replace the pressure sensor and go to Step 10.

STEP 8. Check the M-ASTC-ECU connector E-120.
(1) Disconnect the M-ASTC-ECU connector E-120, and 

measure at the harness side.

(2) Turn the ignition switch to the "ON" position.
(3) Measure voltage between terminal 59 and ground.

Standard value: 0.14 

− 4.85 V

Q: Is the voltage within the standard value?

YES : Replace the M-ASTC-ECU and go to Step 10.
NO :  Go to Step 9.

AC204772

AC204773AD

B-55(GR)

CONNECTOR: B-55

HARNESS CONNECTOR:
HARNESS SIDE

3

2

1

AC203901

AC204627AX

CONNECTOR: E-120

E-120

ASC-ECU CONNECTOR:
HARNESS SIDE

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-84

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-85

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.13A-831

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

1

P.35B-86

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-93

The ABS warning light remains illuminated after the engine is 
started

3

P.35B-102

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

4

P.35B-107

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-111

Faulty ABS operation

6

P.35B-115

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-86

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