Mitsubishi Montero (2004+). Manual - part 1078

 

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Mitsubishi Montero (2004+). Manual - part 1078

 

 

M-ASTC DIAGNOSIS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-23

STEP 2. Check the solenoid valve drive circuit. Measure at 
M-ASTC-ECU connector E-119 by backprobing.

(1) Measure the voltage by backprobing (i.e. without 

disconnecting M-ASTC-ECU connector E-119). 

(2) Turn the ignition switch to the "ON" position.
(3) Measure voltage between the following terminals. It should 

be approximately 12 volts (battery positive voltage).

When DTC 47 is set:

• M-ASTC-ECU connector E-119 terminal 6 and ground

When DTC 48 is set:

• M-ASTC-ECU connector E-119 terminal 5 and ground

Q: Does the voltage measure battery voltage 

(approximately 12 volts)?
YES : 
Go to Step 3.
NO :  Go to Step 4.

STEP 3. Check M-ASTC-ECU connector E-119.

Q: Is M-ASTC-ECU connector E-119 in good condition?

YES : Go to Step 5.
NO :  Repair or replace the connector, and then go to Step 

6.

AC204176

CONNECTOR: E-119

HARNESS 
SIDE

AJ

9

8

21 20

31 30

7

6

5

4

3

2 1

18

28

1716

13

27

15

25

14

26

12

24

11

23

10

22

19

29

AC204580

COMPONENT SIDE: E-119

AQ

1 2

10 11

22 23

3

4

5

6

7

8

9

13

25

1415

18

26

16

27

17

28

19

29

20

30

21

31

12

24

AC204580

COMPONENT SIDE: E-119

AP

1 2

10 11

22 23

3

4

5

6

7

8

9

13

25

1415

18

26

16

27

17

28

19

29

20

30

21

31

12

24

AC204176

CONNECTOR: E-119

HARNESS 
SIDE

AJ

9

8

21 20

31 30

7

6

5

4

3

2 1

18

28

1716

13

27

15

25

14

26

12

24

11

23

10

22

19

29

M-ASTC DIAGNOSIS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-24

STEP 4. Check the wiring harness between HBB connector 
B-14 terminal 6 or 5 and M-ASTC-ECU connector E-119 
terminal 12 or 11.

When DTC 47 is set:

• M-ASTC-ECU connector E-119 terminal 6 and HBB con-

nector B-14 terminal 12

When DTC 48 is set:

• M-ASTC-ECU connector E-119 terminal 5 and HBB con-

nector B-14 terminal 11

Q: Is the wiring harness between HBB connector B-14 

terminal 6 or 5 and M-ASTC-ECU connector E-119 
terminal 12 or 11 in good condition?
YES : 
Go to Step 5.
NO :  Repair the wiring harness, and then go to Step 6.

AC204169

CONNECTOR: B-14

B-14(B)

B-14(B)

HARNESS SIDE

AB

20 19

17

14 13

11

21

15

22

16

18

12

AC204176

CONNECTOR: E-119

HARNESS 
SIDE

AJ

9

8

21 20

31 30

7

6

5

4

3

2 1

18

28

1716

13

27

15

25

14

26

12

24

11

23

10

22

19

29

M-ASTC DIAGNOSIS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-25

STEP 5. Check the solenoid valve for continuity. Measure 
the resistance at HBB connectors B-14 and B-18.

(1) Disconnect HBB connectors B-14 and B-18, and measure 

the resistance at the component-side connector.

(2) Measure the resistance between the following terminals.

When DTC 47 is set:

• Measure the resistance between HBB connector B-14 

terminal 12 and HBB connector B-18 terminal 34.

• The resistance should measure 3.5 − 3.9 ohms

AC204187

CONNECTORS: B-14, B-18

COMPONENT SIDE

AB

B-14(B)

B-14(B)

COMPONENT SIDE

B-18(B)

B-18(B)

19 20

22

13 14

16

18

12

17

11

21

15

32

33

31

34 35

AC204582

COMPONENT SIDE: B-18

AS

COMPONENT SIDE: B-14

19 20

22

13 14

16

18

12

17

11

21

15

32

33

31

34 35

M-ASTC DIAGNOSIS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-26

When DTC 48 is set:

• Measure the resistance between HBB connector B-14 

terminal 11 and HBB connector B-18 terminal 34.

• The resistance should measure 3.5 − 3.9 ohms

Q: Does the resistance measure 3.5 

 3.9 ohms?

YES : Replace the M-ASTC-ECU, and then go to Step 6.
NO :  Replace the HBB master cylinder and hydraulic unit 

assembly, and then go to STEP 6.

STEP 6. Recheck for diagnostic trouble codes.
Q: Does DTC 47 or 48 reset?

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

AC204582

COMPONENT SIDE: B-18

AR

COMPONENT SIDE: B-14

19 20

22

13 14

16

18

12

17

11

21

15

32

33

31

34 35

 

 

 

 

 

 

 

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