Mitsubishi Galant (2004+). Manual — part 465

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-471

STEP 5. Check joint connector (3) C-02 and combination
meter connector C-101 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 6.
NO : Repair the damaged parts. Replace the joint

connector as necessary.

AC305232

HARNESS SIDE

C-101

CONNECTORS: C-02, C-101

AE

C-02

C-02

C-101

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

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-472

STEP 6. Using scan tool MB991958, diagnose the CAN bus
line (Disconnect combination meter connector C-101, and
check the combination meter system).

(1) Disconnect combination meter connector C-101.
(2) Turn the ignition switch to the "ON" position.

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

as shown in the illustration.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect combination meter connector C-101.
Q: Does the MUT-III screen correspond to the illustration?

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

go to Step 7 .

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

illustration, go to Step 8.

AC206894

AB

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

AC305231AQ

CONNECTOR: C-101

HARNESS SIDE

AC306073

: Red section on screen

PCM

METER

-ECU

AC

MUT

ETACS

-ECU

AC-ECU

SRS-ECU

J/C

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-473

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.

AC305232

HARNESS SIDE

C-101

CONNECTORS: C-02, C-101

AE

C-02

C-02

C-101

DIAGNOSIS

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CONTROLLER AREA NETWORK (CAN)

54C-474

(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-266

.

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