Mitsubishi Galant (2004+). Manual — part 458

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-443

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.

AC305232

HARNESS SIDE

C-101

CONNECTORS: C-02, C-101

AE

C-02

C-02

C-101

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-444

(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 the resistance measures 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

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-445

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-571

<Vehicles without multi-center display

(middle-grade type)> or

P.54C-584

<Vehicles with

multi-center display (middle-grade type)>.

NO : If the resistance does not measure 120

± 20 , replace

the combination meter.

AC305231AQ

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

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-446

STEP 7. Check powertrain control module connector B-19
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 powertrain control module connector B-19 in good

condition?
YES : Go to Step 8.
NO : Repair the damaged parts.

AC306248AD

B-19 (B)

CONNECTOR: B-19

PCM

AIR
CLEANER

HARNESS SIDE