Mitsubishi 380. Manual - part 730

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-331

STEP 7. Check the CAN bus lines between joint connector 
(3) and the combination meter. Measure the resistance 
between 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-332

(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, power 

supply to the combination meter may be suspected. 
Diagnose the combination meter by referring to 
GROUP 54A, Combination meter assembly 

P.54A-284

.

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-333

STEP 8. Check ETACS-ECU connector C-218 for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.

• Refer to circuit diagrams GROUP-

90

• Refer to configuration diagrams GROUP-

80

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 9.
NO :  Repair the damaged parts.

STEP 9. Using diagnostic tool MB991958, diagnose the 
CAN bus line (Disconnect ETACS-ECU connector C-218, 
and check the ETACS-ECU system).
(1) Disconnect ETACS-ECU connector C-218.
(2) Turn the ignition switch to the "ON" position.

16DB474A

C-218 (GR)

CONNECTOR: C-218

HARNESS SIDE

JUNCTION BLOCK

(REAR VIEW)

16DB474A

C-218 (GR)

CONNECTOR: C-218

HARNESS SIDE

JUNCTION BLOCK

(REAR VIEW)

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-334

(3) Diagnose CAN bus lines, and check if the MUT-III screen is 

as shown in the illustration.

NOTE: When diagnosing CAN-BUS on vehi-

cles with manual transmission (M/T), disregard 
A/T-ECU and it’s wiring circuits and measure 
between ABS-ECU and ENGINE-ECU only.

NOTE: When diagnosing CAN-BUS on vehicles 
not equipped with a multi-centre display, disre-
gard the multi-centre display and it’s wiring cir-
cuits.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Connect ETACS-ECU connector C-218.

Q: Does the MUT-III screen correspond to the illustration?

YES : If the MUT-III screen corresponds to the illustration, 

go to Step 10 .

NO :  If the MUT-III screen does not correspond to the 

illustration, go to Step 11.

16DB595A

: Red section on screen

ETACS

-ECU

AC-ECU

SRS-ECU

C.DISPLAY

MUT

J/C

METER

-ECU

ENGINE

ECU

ABS-ECU

A/T-ECU