Mitsubishi 380. Manual — part 683

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-142

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-143

STEP 7. Check the CAN_H line (communication line
including the combination meter) between joint connector
(3) and the combination meter for short to ground.
Measure the resistance 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

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

(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 joint connector (3)

terminal 4 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 9

.

NO : If the resistance measures less than 1 k

Ω, go to Step

8.

16DB408A

CONNECTOR: C-02

AC209364

11
22

10

21

9

20

8

19

7

18

6

17

5

16

4

15

3

14

2

13

1

12

AC209364

AC209364

AC209364

AC209364

AC209364

AC209364HW

HARNESS SIDE: C-02

TEST
HARNESS

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-144

STEP 8. Check the CAN_H line (communication line only)
between joint connector (3) and the combination meter
connector for short to ground. Measure the resistance 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 resistance at the wiring
harness side of joint connector (3) C-02.

(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 joint connector (3)

terminal 4 and body ground.

OK: 1 k

Ω or more

CAUTION

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

P.54C-5

.

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, 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

AC209364

11
22

10

21

9

20

8

19

7

18

6

17

5

16

4

15

3

14

2

13

1

12

AC209364

AC209364

AC209364

AC209364

AC209364

AC209364HW

HARNESS SIDE: C-02

TEST
HARNESS

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-145

STEP 9. Check the CAN_H line (communication line
including the ETACS-ECU) between joint connector (3) and
the ETACS-ECU connector for short to ground. Measure
the resistance 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

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

(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 joint connector (3)

terminal 5 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

12 .

NO : If the resistance measures less than 1 k

Ω, 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

AC209364

11
22

10

21

9

20

8

19

7

18

6

17

5

16

4

15

3

14

2

13

1

12

AC209364

AC209364

AC209364

AC209364

AC209364

AC209364HX

HARNESS SIDE: C-02

TEST
HARNESS

16DB474A

C-218 (GR)

CONNECTOR: C-218

HARNESS SIDE

JUNCTION BLOCK

(REAR VIEW)