Mitsubishi 380. Manual - part 742

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-379

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB991219: Inspection Test Harness

STEP 1. Check intermediate connector C-29 and ABS-ECU 
connector A-02 for loose, corroded or damaged terminals, 
or terminals pushed back in the connector.

CAUTION

The strand end of the twisted wire should be within 10 cm 
(4 inches) from the connector. For details refer to 

P.54C-4

.

Q: Are intermediate connector C-29 and ABS-ECU 

connector A-02 in good condition?
YES : Go to Step 2.
NO :  Repair the damaged parts. Replace the joint 

connector as necessary.

16DB402A

A-02 (GR)

CONNECTOR: A-02 

A-02 HARNESS CONNECTOR:

52DB014A

CONNECTOR: C-29

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-380

STEP 2. Check the CAN bus lines between intermediate 
connector C-29 and the ABS-ECU. Measure the resistance 
between intermediate connector C-29 and ABS-ECU 
connector A-02.

CAUTION

A digital multimeter should be used. For details refer to 

P.54C-4

.

CAUTION

The test wiring harness should be used. For details refer to 

P.54C-4

.

(1) Disconnect intermediate connector C-29 and ABS-ECU 

connector A-02, and measure the resistance between the 
wiring harness side connector of ABS-ECU connector A-02 
(using MB991219) and the male side connector of 
intermediate connector C-29 (at front wiring harness side).

(2) Turn the ignition switch to the "LOCK" (OFF) position.

CAUTION

Disconnect the negative battery terminal. For details refer 
to 

P.54C-4

.

(3) Disconnect the negative battery terminal.

16DB402A

A-02 (GR)

CONNECTOR: A-02 

A-02 HARNESS CONNECTOR:

52DB014A

CONNECTOR: C-29

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-381

(4) Measure the resistance between intermediate connector 

terminal 11 and ABS-ECU connector terminal 25.

OK: 2 ohms or less

(5) Measure the resistance between intermediate connector 

terminal 12 and ABS-ECU connector terminal 14.

OK: 2 ohms or less

CAUTION

Strictly observe the specified wiring harness repair proce-
dure. For details refer to 

P.54C-5

.

Q: Do all the resistances measure 2 ohms or less?

YES : If all the resistances measure 2 ohms or less, go to 

Step 3.

NO :  If either of the resistances measures more than 2 

ohms or all the resistances measure more than 2 
ohms, repair the wiring harness between intermediate 
connector C-29 and the ABS-ECU connector. 

16DB513A

2 3

27

32

28

33

16

15

4 5

19

18

29

17

34

7 8

35

22

21

9 10

30

36

31

37

25

24

23

6

20

1

14

26

11

13

12

38

TEST
HARNESS

TEST
HARNESS

HARNESS SIDE: A-02

MALE SIDE: C-29

16DB514A

2 3

27

32

28

33

16

15

4 5

19

18

29

17

34

7 8

35

22

21

9 10

30

36

31

37

25

24

23

6

20

1

14

26

11

13

12

38

TEST 
HARNESS

TEST 
HARNESS

HARNESS SIDE: A-02

MALE SIDE: C-29

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-382

STEP 3. Check joint connector (3) C-02 for loose, corroded 
or damaged terminals, or terminals pushed back in the 
connector.

CAUTION

The strand end of the twisted wire should be within 10 cm 
(4 inches) from the connector. For details refer to 

P.54C-4

.

Check the joint connector at the wiring harness side for loose, 
corroded or damaged terminals, or terminals pushed back in 
the connector, and also check the short pin behind the connec-
tor for corrosion, deformation and delamination.

Q: Is joint connector (3) C-02 in good condition?

YES : Go to Step 4.
NO :  Repair the damaged parts. Replace the joint 

connector as necessary.

16DB408A

CONNECTOR: C-02

AC209350

1

12

2

13

3

14

4

15

5

16

6

17

7

18

8

19

9

20

10

21

11
22

AB

SHORT PIN