Mitsubishi Montero (2004+). Manual - part 1041

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-7

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. Select "Actuator Test."
8. Choose an appropriate item and select the "OK" button.

AC307591 AC

MB991911

MB991824

MB991827

AC307591

DATA LINK

CONNECTOR

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-8

DIAGNOSTIC TROUBLE CODE CHART

M1352011300407

Follow the inspection chart that is appropriate for the 
diagnostic trouble code.

DIAGNOSTIC 
TROUBLE 
CODE NO.

INSPECTION ITEM

DIAGNOSTIC CONTENT

REFERENCE PAGE

11

Front right ABS sensor

Open circuit or short circuit

P.35B-11

12

Front left ABS sensor

13

Rear right ABS sensor

14

Rear left ABS sensor

16

Battery positive voltage

M-ASTC-ECU power 
supply voltage is extremely 
low or high

Refer to GROUP 35A, HBB 
Trouble Code Diagnosis 

P.35A-18

.

17

Active skid control switch

Abnormal output signal

Refer to GROUP 35C, Active 
skid control system Trouble 
Code Diagnosis 

P.35C-9

.

21

Front right ABS sensor

P.35B-23

22

Front left ABS sensor

23

Rear right ABS sensor

24

Rear left ABS sensor

25

The difference diameter tire

P.35B-36

31

Ignition switch (IG2) system

Open circuit

Refer to GROUP 35A, ABS 
Trouble Code Diagnosis 

P.35A-20

.

33

Stoplight switch system

Open circuit or ON failure

P.35B-42

34

CAN communication system

Refer to GROUP 35C, Active 
skid control system Trouble 
Code Diagnosis 

P.35C-15

.

35

PCM (engine) system

Abnormal output signal

Refer to GROUP 35C, Active 
skid control system Trouble 
Code Diagnosis 

P.35C-17

.

36

Communication line with PCM (engine)

Refer to GROUP 35C, Active 
skid control system Trouble 
Code Diagnosis 

P.35C-19

.

37

PCM (A/T) system

Abnormal output signal

Refer to GROUP 35C, Active 
skid control system Trouble 
Code Diagnosis 

P.35C-17

.

38

Communication line with PCM (A/T)

Refer to GROUP 35C, Active 
skid control system Trouble 
Code Diagnosis 

P.35C-19

.

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-9

41

Front right control solenoid 
valve

If there is no response to 
the solenoid valve drive 
signal corresponding to 
each respective item

P.35B-49

42

Front left control solenoid valve

43

Rear right control solenoid valve

44

Rear left control solenoid valve

45

Front right select solenoid valve

46

Front left select solenoid valve

47

Active traction control system select solenoid valve

Refer to GROUP 35C, Active 
skid control system Trouble 
Code Diagnosis 

P.35C-21

.

48

Active traction control system select solenoid valve

51

Valve relay system

Short circuit or ON failure

P.35B-64

52

Valve relay system

Open circuit or OFF failure

P.35B-68

53

Pump motor

• Seizure of the pump 

motor*

• Abnormality at the 

current detection circuit 
of the M-ASTC-ECU

Refer to GROUP 35A, HBB 
Trouble Code Diagnosis 

P.35A-25

.

54

Motor relay

Open circuit, short circuit or 
failure of the motor relay 
coil

Refer to GROUP 35A, HBB 
Trouble Code Diagnosis 

P.35A-33

.

55

Pump motor circuit

Pump motor energized 
abnormally for long period*

Refer to GROUP 35A, HBB 
Trouble Code Diagnosis 

P.35A-58

.

56

Pressure switch

Open circuit or short circuit Refer to GROUP 35A, HBB 

Trouble Code Diagnosis 

P.35A-71

.

57

Accumulator

Accumulator low-pressure 
abnormality*

Refer to GROUP 35A, HBB 
Trouble Code Diagnosis 

P.35A-79

.

58

M-ASTC-ECU (Power supply 
drive circuit)

Pump motor drive circuit in 
the M-ASTC-ECU 
abnormality

Replace the M-ASTC-ECU 
(Refer to GROUP 35C, 
M-ASTC-ECU 

P.35C-213

).

61

Master cylinder pressure sensor system

P.35B-77

62

G-sensor system

Open circuit or short circuit Refer to GROUP 35C, Active 

skid control system Trouble 
Code Diagnosis 

P.35C-27

.

63

G-sensor system

Abnormal output signal

64

G-sensor system

G sensor seized

65

G-sensor system

Trouble in self-diagnosis

66

Steering wheel sensor system

Trouble in self-diagnosis

Refer to GROUP 35C, Active 
skid control system Trouble 
Code Diagnosis 

P.35C-33

.

67

Steering wheel sensor system

Trouble in communication 
line

Refer to GROUP 35C, Active 
skid control system Trouble 
Code Diagnosis 

P.35C-41

.

DIAGNOSTIC 
TROUBLE 
CODE NO.

INSPECTION ITEM

DIAGNOSTIC CONTENT

REFERENCE PAGE

ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-10

NOTE: If the trouble marked by * has occurred, the M-ASTC-ECU sounds the buzzer continuously to inform 
the trouble of the driver and protects the pump motor by activating the pump motor intermittently.

68

Steering wheel sensor system

Abnormal output signal

Refer to GROUP 35C, Active 
skid control system Trouble 
Code Diagnosis 

P.35C-33

.

71

Yaw rate sensor system

Trouble in self-diagnosis

Refer to GROUP 35C, Active 
skid control system Trouble 
Code Diagnosis 

P.35C-27

.

72

Yaw rate sensor system

Incorrectly set reference 
value

73

Yaw rate sensor system

Abnormal output signal

74

Abnormal communication of the G and yaw rate sensor

Refer to GROUP 35C, Active 
skid control system Trouble 
Code Diagnosis 

P.35C-48

.

75

Center differential lock switch

Refer to GROUP 35C, Active 
skid control system Trouble 
Code Diagnosis 

P.35C-54

.

76

G-sensor system

Refer to GROUP 35C, Active 
skid control system Trouble 
Code Diagnosis 

P.35C-27

.

77

Yaw rate sensor system

78

Incorrect PCM fitted

Refer to GROUP 35C, ABS 
Trouble Code Diagnosis 

P.35C-17

.

81

G sensor not initialized

Refer to GROUP 35C, Active 
skid control system Trouble 
Code Diagnosis 

P.35C-57

.

82

Yaw rate sensor not initialized

83

Steering wheel sensor not initialized

Refer to GROUP 35C, Active 
skid control system Trouble 
Code Diagnosis 

P.35C-33

.

84

Transfer switch not initialized

Refer to GROUP 35C, Active 
skid control system Trouble 
Code Diagnosis 

P.35C-58

.

85

Master cylinder pressure sensor not initialized

Refer to GROUP 35C, Active 
skid control system Trouble 
Code Diagnosis 

P.35C-59

.

DIAGNOSTIC 
TROUBLE 
CODE NO.

INSPECTION ITEM

DIAGNOSTIC CONTENT

REFERENCE PAGE