Mitsubishi 380. Manual — part 662

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-59

STEP 27. Check the CAN_L-side bus line (communication
line including) of the front wiring harness for a short to the
power supply. Measure the voltage 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

voltage at the male side (at front wiring harness side).

(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between intermediate connector

terminal 12 and body ground.

OK: 4.0 V or less

Q: Does the voltage measure 4.0 V or less?

YES : If the voltage measures 4.0 V or less, go to Step 28.
NO : If the voltage measures more than 4.0 V, go to Step

42.

52DB014A

CONNECTOR: C-29

AC209365

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

AC209365

MALE SIDE: C-29

TEST HARNESS

GA

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-60

STEP 28. 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 29.
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

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-61

STEP 29. Check the CAN_L line (communication line
including the combination meter) between joint connector
(3) and the combination meter connector for a short to the
power supply. Measure the voltage at joint connector (3)
C-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 joint connector (3) C-02, and measure the

voltage at the wiring harness side of joint connector (3)
C-02.

(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between joint connector (3) terminal

15 and body ground.

OK: 4.0 V or less

Q: Does the voltage measure 4.0 V or less?

YES : If the voltage measures 4.0 V or less, go to Step 31.
NO : If the voltage measures more than 4.0 V, go to Step

30.

16DB408A

CONNECTOR: C-02

AC209365

11

22

10

21

9

20

8

19

7

18

6

17

5

16

4

15

3

14

2

13

1

12

AC209365

AC209365GB

HARNESS SIDE: C-02

TEST
HARNESS

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-62

STEP 30. Check the CAN_L line (communication line only)
between joint connector (3) and the combination meter
connector for a short to the power supply. Measure the
voltage at joint connector (3) C-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 joint connector (3) C-02 and combination meter

connector C-101, and measure the voltage at the wiring
harness side of joint connector (3) C-02.

(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between joint connector (3) terminal

15 and body ground.

OK: 1.0 V or less

CAUTION

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

P.54C-5

.

Q: Does the voltage measure 1.0 V or less?

YES : If the voltage measures 1.0 V or less, diagnose CAN

bus lines thoroughly by referring to

P.54C-323

.

NO : If the voltage measures more than 1.0 V, repair the

wiring harness between joint connector (3) and the
combination meter connector.

16DB476A

HARNESS SIDE

C-101

CONNECTORS: C-02, C-101

C-02

C-02

C-101

AC209365

11

22

10

21

9

20

8

19

7

18

6

17

5

16

4

15

3

14

2

13

1

12

AC209365

AC209365GB

HARNESS SIDE: C-02

TEST
HARNESS