Mitsubishi Galant (2004+). Manual - part 418

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-283

STEP 21. Check the CAN_H line (communication line 
including the multi-center display unit (middle-grade type)) 
between joint connector (3) and middle-grade multi-center 
display connector for short to ground. 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) 

terminal 8 and body ground.

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 

24   .

NO :  If the resistance measures less than 1 k

Ω, go to Step 

22 .

STEP 22. Check multi-center display unit (middle-grade 
type) connector C-05.

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 multi-center display unit (middle-grade type) 

connector C-05 in good condition?
YES : Go to Step 23.
NO :  Repair the damaged parts.

AC305231AP

CONNECTOR: C-02

AC209364

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AC209364

AC209364

AC209364

AC209364

AC209364

AC209364IB

HARNESS SIDE: C-02

TEST HARNESS

AC305233 AF

CONNECTOR: C-05

HARNESS SIDE

C-05 (B)

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-284

STEP 23. Check the CAN_H line (communication line only) 
between joint connector (3) and multi-center display unit 
(middle-grade type) connector for short to ground. 

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 multi-center display 

unit (middle-grade type) connector C-05, 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) 

terminal 8 and body ground.

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, diagnose 

CAN bus lines thoroughly by referring to 

P.54C-534

.

NO :  If the resistance measures less than 1 k

Ω, repair the 

wiring harness between joint connector (3) and 
multi-center display unit (middle-grade type) 
connector.

AC305231AP

CONNECTOR: C-02

AC305233 AF

CONNECTOR: C-05

HARNESS SIDE

C-05 (B)

AC209364

11

22

10

21

9

20

8

19

7

18

6

17

5

16

4

15

3

14

2

13

1

12

AC209364

AC209364

AC209364

AC209364

AC209364

AC209364IB

HARNESS SIDE: C-02

TEST HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-285

STEP 24. Check the CAN_H line (communication line only) 
between joint connector (3) and the data link connector for 
short to ground. 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) 

terminal 7 and body ground.

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 

25   .

NO :  If the resistance measures less than 1 k

Ω, repair the 

wiring harness between joint connector (3) and the 
data link connector.

AC305231AP

CONNECTOR: C-02

AC209364

11

22

10

21

9

20

8

19

7

18

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17

5

16

4

15

3

14

2

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1

12

AC209364

AC209364

AC209364

AC209364

AC209364

AC209364IC

HARNESS SIDE: C-02

TEST HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-286

STEP 25. Check the CAN_H line (communication line only) 
between intermediate connector C-29 and joint connector 
(3) for short to ground. 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 intermediate connector C-29 and 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) 

terminal 9 and body ground.

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, diagnose 

CAN bus lines thoroughly by referring to 

P.54C-534

.

NO :  If the resistance measures less than 1 k

Ω, repair the 

wiring harness between intermediate connector C-29 
and joint connector (3).

AC305232

CONNECTORS: C-02, C-29

AG

C-02

C-02

C-29

C-29

AC209364

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1

12

AC209364

AC209364

AC209364

AC209364

AC209364

AC209364ID

HARNESS SIDE: C-02

TEST HARNESS