Mitsubishi 380. Manual - part 709

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-246

STEP 7. Check the combination meter for short circuit. 
Measure the resistance at combination meter connector 
C-101.

CAUTION

A digital multimeter should be used. For details refer to 

P.54C-4

.

(1) Disconnect combination meter C-101, and measure the 

resistance at the component side of combination meter 
connector C-101.

(2) Measure the resistance between combination meter 

connector terminals 14 and 15.

OK: 120 

± 20 Ω

Q: Does the resistance measure 120 

± 20 Ω?

YES : If the resistance measures 120 

± 20 Ω, diagnose CAN 

bus lines thoroughly by referring to 

P.54C-323

.

NO :  If the resistance does not measure 120 

± 20 Ω, 

replace the combination meter.

16DB499A

CONNECTOR: C-101

HARNESS SIDE

AC204582BY

COMPONENT SIDE: C-101

G

11
22

17

3

14

G

12

1

13

2

15

4

16

5

18

7

6

19

8

10

21

20

9

TEST 
HARNESS

TEST HARNESS

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-247

STEP 8. Check the CAN_L and H lines (communication 
lines including the ETACS-ECU) between joint connector 
(3) and the ETACS-ECU for a short circuit. 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) 

terminals 5 and 16.

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 

9.

STEP 9. 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 10.
NO :  Repair the damaged parts.

16DB408A

CONNECTOR: C-02

AC209438

TEST 
HARNESS

AR

TEST 

HARNESS

11

22

10

21

9

20

8

19

7

18

6

17

5

16

4

15

3

14

2

13

1

12

HARNESS SIDE: C-02

16DB474A

C-218 (GR)

CONNECTOR: C-218

HARNESS SIDE

JUNCTION BLOCK

(REAR VIEW)

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-248

STEP 10. Check the CAN_L and H lines (communication 
lines only) between joint connector (3) and the 
ETACS-ECU for short circuit. 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 ETACS-ECU 

connector C-218, 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) 

terminals 5 and 16.

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 

11  .

NO :  If the resistance measures less than 1 k

Ω, repair the 

wiring harness between joint connector (3) and the 
ETACS-ECU connector.

16DB408A

CONNECTOR: C-02

16DB474A

C-218 (GR)

CONNECTOR: C-218

HARNESS SIDE

JUNCTION BLOCK

(REAR VIEW)

AC209438

TEST 
HARNESS

AR

TEST 

HARNESS

11

22

10

21

9

20

8

19

7

18

6

17

5

16

4

15

3

14

2

13

1

12

HARNESS SIDE: C-02

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-249

STEP 11. Check the ETACS-ECU for short circuit. Measure 
the resistance at ETACS-ECU connector C-218.

CAUTION

A digital multimeter should be used. For details refer to 

P.54C-4

.

(1) Disconnect ETACS-ECU connector C-218, and measure 

the resistance at the component side of ETACS-ECU 
connector C-218.

(2) Measure the resistance between ETACS-ECU connector 

terminals 66 and 67.

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, replace the 

ETACS-ECU.

16DB474A

C-218 (GR)

CONNECTOR: C-218

HARNESS SIDE

JUNCTION BLOCK

(REAR VIEW)

16DB500A

COMPONENT SIDE: C-218

TEST 
HARNESS

TEST 
HARNESS