Mitsubishi 380. Manual — part 698

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-202

(4) Measure the resistance between joint connector terminal 3

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, 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 C-02 and
SRS-ECU connector C-121.

STEP 18. Check the CAN_H line (communication line
including the multi-center display unit ) between joint
connector (3) and middle-grade multi-center display
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 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 8 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

21 .

NO : If the resistance measures less than 1 k

Ω, go to Step

19 .

AC209364

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22

10

21

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12

AC209364

AC209364

AC209364

AC209364

AC209364

AC209364HZ

HARNESS SIDE: C-02

TEST
HARNESS

16DB408A

CONNECTOR: C-02

AC209364

11
22

10

21

9

20

8

19

7

18

6

17

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AC209364

AC209364

AC209364

AC209364

AC209364

AC209364IB

HARNESS SIDE: C-02

TEST HARNESS

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-203

STEP 19. Check multi-center display unit connector C-05.

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 multi-center display unit connector C-05 in good

condition?
YES : Go to Step 20.
NO : Repair the damaged parts.

STEP 20. Check the CAN_H line (communication line only)
between joint connector (3) and multi-center display unit
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 multi-center display

unit connector C-05, 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.

16DB490A

CONNECTOR: C-05

HARNESS SIDE

C-05 (B)

16DB408A

CONNECTOR: C-02

16DB490A

CONNECTOR: C-05

HARNESS SIDE

C-05 (B)

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-204

(4) Measure the resistance between joint connector (3)

terminal 8 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
multi-center display unit connector.

STEP 21. Check the CAN_H line (communication line only)
between joint connector (3) and the data link 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 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 7 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, go to Step

22 .

NO : If the resistance measures less than 1 k

Ω, repair the

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

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

AC209364IB

HARNESS SIDE: C-02

TEST HARNESS

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

AC209364IC

HARNESS SIDE: C-02

TEST HARNESS

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-205

STEP 22. Check the CAN_H line (communication line only)
between intermediate connector C-29 and joint connector
(3) 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 intermediate connector C-29 and 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 9 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 intermediate connector C-29
and joint connector (3).

16DB479A

CONNECTORS: C-02, C-29

C-02

C-02

C-29

C-29

AC209364

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22

10

21

9

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8

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7

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17

5

16

4

15

3

14

2

13

1

12

AC209364

AC209364

AC209364

AC209364

AC209364

AC209364ID

HARNESS SIDE: C-02

TEST HARNESS