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

11

22

10

21

9

20

8

19

7

18

6

17

5

16

4

15

3

14

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

11

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