Mitsubishi 380. Manual - part 678

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-123

STEP 45. Check the CAN_L line (communication line only) 
between joint connector (3) and multi-center display unit  
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 multi-center display 

unit  connector C-05, 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 

19 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 
multi-center display unit  connector.

16DB408A

CONNECTOR: C-02

16DB490A

CONNECTOR: C-05

HARNESS SIDE

C-05 (B)

AC209365

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22

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21

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20

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19

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18

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17

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16

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2

13

1

12

AC209365

AC209365FV

HARNESS SIDE: C-02

TEST HARNESS

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-124

STEP 46. Check the CAN_L line (communication line only) 
between joint connector (3) and the data link 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 

18 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, go to Step 47.
NO :  If the voltage measures more than 1.0 V, repair the 

wiring harness between joint connector (3) and the 
data link connector.

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

AC209365GH

HARNESS SIDE: C-02

TEST HARNESS

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-125

STEP 47. Check the CAN_L line (communication line only) 
between intermediate connector C-29 and joint connector 
(3) 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 intermediate connector C-29 and 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 

20 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 intermediate connector C-29 
and joint connector (3).

16DB479A

CONNECTORS: C-02, C-29

C-02

C-02

C-29

C-29

AC209365

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22

10

21

9

20

8

19

7

18

6

17

5

16

4

15

3

14

2

13

1

12

AC209365

AC209365GI

HARNESS SIDE: C-02

TEST HARNESS

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-126

STEP 48. Check 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: Is ABS-ECU connector A-02 in good condition?

YES : Go to Step 49.
NO :  Repair the damaged parts.

STEP 49. Check the CAN_L line (communication line only) 
between intermediate connector C-29 and ABS-ECU 
connector 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

.

16DB402A

A-02 (GR)

CONNECTOR: A-02 

A-02 HARNESS CONNECTOR:

52DB014A

CONNECTOR: C-29