Mitsubishi 380. Manual - part 657

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-39

STEP 6. 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 7.
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-40

STEP 7. Check the CAN_H line (communication line 
including the combination meter) between joint connector 
(3) and the combination meter 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 4 

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 9.
NO :  If the voltage measures more than 4.0 V, go to Step 8.

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

AC209365FQ

HARNESS SIDE: C-02

TEST 
HARNESS

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-41

STEP 8. Check the CAN_H 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 4 

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

AC209365FQ

HARNESS SIDE: C-02

TEST 
HARNESS

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-42

STEP 9. Check the CAN_H line (communication line 
including the ETACS-ECU) between joint connector (3) and 
the ETACS-ECU connector for a short to the power supply. 
Measure the voltage at joint connector (3) C-02.

• Refer to circuit diagrams GROUP-

90

• Refer to configuration diagrams GROUP-

80

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 5 

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 12.
NO :  If the voltage measures more than 4.0 V, go to Step 

10.

STEP 10. Check ETACS-ECU connector C-218 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 ETACS-ECU connector C-218 in good condition?

YES : Go to Step 11.
NO :  Repair the damaged parts.

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

AC209365

HARNESS SIDE: C-02

TEST HARNESS

FR

16DB474A

C-218 (GR)

CONNECTOR: C-218

HARNESS SIDE

JUNCTION BLOCK
(REAR VIEW)