Mitsubishi Galant (2004+). Manual - part 402

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-219

(4) Measure the resistance between data link connector 

terminal 6 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 3   

.

NO :  If the resistance measures less than 1 k

Ω, go to Step 

4.

AC209364

Y

8

16

15

7

5

1314

6

12

4

2

1011

3

9

1

AC209364

AC209364

AC209364

AC209364

AC209364HT

HARNESS SIDE: C-125

TEST 
HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-220

STEP 3. Check the CAN_L-side bus line (communication 
line including ECUs) for short to ground. Measure the 

resistance at data link connector C-125.

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 powertrain control module connector B-19 and 

combination meter connector C-101, and measure the 
resistance at the harness side of data link connector C-125.

(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.

AC306248AD

B-19 (B)

CONNECTOR: B-19

PCM

AIR
CLEANER

HARNESS SIDE

AC305232

CONNECTORS: C-101, C-125

AH

C-101

C-125

C-125 (B)

C-101 HARNESS SIDE

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-221

(4) Measure the resistance between data link connector 

terminal 14 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, diagnose 

CAN bus lines thoroughly by referring to 

P.54C-498

.

NO :  If the resistance measures less than 1 k

Ω, go to Step 

27.

STEP 4. Check intermediate connector C-29 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 intermediate connector C-29 in good condition?

YES : Go to Step 5.
NO :  Repair the damaged parts.

AC209364

Y

8

16

15

7

5

1314

6

12

4

2

1011

3

9

1

AC209364HU

HARNESS SIDE: C-125

TEST 
HARNESS

AC305231AI

CONNECTOR: C-29

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-222

STEP 5. Check the CAN_H-side bus line (communication 
line including ECUs) of the front wiring harness for short 
to ground. Measure the resistance at intermediate 

connector C-29.

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 measure the 

resistance at the male side (at front wiring harness side).

(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 intermediate connector 

terminal 11 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 6   

.

NO :  If the resistance measures less than 1 k

Ω, go to Step 

23.

AC305231AI

CONNECTOR: C-29

AC209364

2 3

27

32

28

33

16

15

4 5

19

18

29

17

34

7 8

35

22

21

9 10

30

36

31

37

25

24

23

6

20

1

14

26

11

13

12

38

AC209364

MALE SIDE: C-29

TEST 
HARNESS

HV