Mitsubishi 380. Manual - part 724

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-307

STEP 5. Check the CAN bus lines (communication line 
only) between joint connector (3) and the combination 
meter. Measure the resistance at joint connector (3) C-02 
and combination meter connector C-101.

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 between 
each wiring harness side connector.

(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.

16DB476A

 

HARNESS SIDE

C-101

CONNECTORS: C-02, C-101

C-02

C-02

C-101

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-308

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

terminal 15 and combination meter connector terminal 15.

OK: 2 ohms or less

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

terminal 4 and combination meter connector terminal 14.

OK: 2 ohms or less

CAUTION

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

P.54C-5

.

Q: Do all the resistances measure 2 ohms or less?

YES : If all the resistances measure 2 ohms or less, go to 

Step 6.

NO :  If either of the resistances measures more than 2 

ohms or all the resistances measure more than 2 
ohms, repair the wiring harness between joint 
connector (3) and the combination meter connector. 

AC204582

HARNESS SIDE: C-02

BZ

11
22

10
21

9

20

8

19

7

18

6

17

5

16

4

15

3

14

2

13

1

12

G

G

22

11

5

16

19

20

21

17

18

8

10 9

7 6

13

1514

12

2

4 3

1

TEST 
HARNESS

HARNESS SIDE: C-101

TEST 
HARNESS

AC204582

HARNESS SIDE: C-02

TEST 
HARNESS

11
22

10
21

9

20

8

19

7

18

6

17

5

16

4

15

3

14

2

13

1

12

G

G

22

11

5

16

19

20

21

17

18

8

10 9

7 6

13

1514

12

2

4 3

1

TEST 
HARNESS

HARNESS SIDE: C-101

CA

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-309

STEP 6. Check the terminator resistor inside the 
combination meter. 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

 

<Vehicles with multi-center display >.

NO :  If the resistance does not measure 120 

± 20 , replace 

the combination meter.

STEP 7. Check ENGINE-ECU connector B-21, A/T-ECU 
connector B-19 and ABS-ECU connector A-02 for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.

NOTE: when diagnosing CAN-BUS on vehicles with 
manual transmission (M/T), disregard A/T-ECU and it’s wir-
ing circuits and check between ABS-ECU and 
ENGINE-ECU only.

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-310

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: Are ENGINE-ECU connector B-21, A/T-ECU connector 

B-19 and ABS-ECU connector A-02 in good condition? 
YES : Go to Step 8.
NO :  Repair the damaged parts.

16DB407A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

A/T

CONTROL

UNIT

16DB402A

A-02 (GR)

CONNECTOR: A-02 

A-02 HARNESS CONNECTOR: