Mitsubishi 380. Manual - part 682

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-138

(4) Measure the resistance between data link connector 

terminal 6 and body ground.

OK: 1 k

Ω or more

Q: Does the resistance measure 1 k

Ω or more?

YES : If the resistance measures 1 k

Ω or more, go to Step 3   

.

NO :  If the resistance measures less than 1 k

Ω, go to Step 

4.

AC209364

Y

8

16

15

7

5

1314

6

12

4

2

1011

3

9

1

AC209364

AC209364

AC209364

AC209364

AC209364HT

HARNESS SIDE: C-125

TEST 
HARNESS

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-139

STEP 3. Check the CAN_L-side bus line (communication 
line including ECUs) for short to ground. Measure the 
resistance at data link connector C-125.

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 ENGINE- ECU connector B-21 and combination 

meter connector C-101, and measure the resistance at the 
harness side of data link connector C-125.

(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.

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

16DB475A

CONNECTORS: C-101, C-125

C-101

C-125

C-125 (B)

C-101 HARNESS SIDE

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-140

(4) Measure the resistance between data link connector 

terminal 14 and body ground.

OK: 1 k

Ω or more

Q: Does the resistance measure 1 k

Ω or more?

YES : If the resistance measures 1 k

Ω or more, diagnose 

CAN bus lines thoroughly by referring to 

P.54C-323

.

NO :  If the resistance measures less than 1 k

Ω, go to Step 

27.

STEP 4. Check intermediate connector C-29 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: Is intermediate connector C-29 in good condition?

YES : Go to Step 5.
NO :  Repair the damaged parts.

AC209364

Y

8

16

15

7

5

1314

6

12

4

2

1011

3

9

1

AC209364HU

HARNESS SIDE: C-125

TEST 
HARNESS

52DB014A

CONNECTOR: C-29

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-141

STEP 5. Check the CAN_H-side bus line (communication 
line including ECUs) of the front wiring harness for short 
to ground. Measure the resistance at intermediate 
connector C-29.

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 measure the 

resistance at the male side (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.

(4) Measure the resistance between intermediate connector 

terminal 11 and body ground.

OK: 1 k

Ω or more

Q: Does the resistance measure 1 k

Ω or more?

YES : If the resistance measures 1 k

Ω or more, go to Step 6   

.

NO :  If the resistance measures less than 1 k

Ω, go to Step 

23.

52DB014A

CONNECTOR: C-29

AC209364

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

AC209364

MALE SIDE: C-29

TEST 
HARNESS

HV