Mitsubishi Galant (2004+). Manual - part 462

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-459

STEP 7. Check powertrain control module connector B-19 
and ABS-ECU connector A-02 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: Are powertrain control module connector B-19 and 

ABS-ECU connector A-02 in good condition? 
YES : Go to Step 8.
NO :  Repair the damaged parts.

AC305206

CONNECTOR: A-02

AG

A-02 (GR)

HARNESS SIDE

AC306248AD

B-19 (B)

CONNECTOR: B-19

PCM

AIR
CLEANER

HARNESS SIDE

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-460

STEP 8. Check the CAN bus lines between the ABS-ECU 
and the powertrain control module (communication line 
including the powertrain control module). Measure the 

resistance at ABS-ECU connector A-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 ABS-ECU connector A-02, and measure the 

resistance at the wiring harness side of ABS-ECU 
connector A-02.

(2) Turn the ignition switch to the "LOCK" (OFF) position. 

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 ABS-ECU connector 

terminals 23 and 24.

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 Ω, go to 

Step 9.

AC305206

CONNECTOR: A-02

AG

A-02 (GR)

HARNESS SIDE

AC209438

2

19

1

18

25

8

15

16

17

27

28

26

11

9

10

12

13

14

23

24

22 21

7

6

5

4

20

3

AE

TEST 
HARNESS

HARNESS SIDE: A-02

TEST 
HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-461

STEP 9. Check the CAN bus lines (communication line 
only) between ABS-ECU and the powertrain control 
module. Measure the resistance between ABS-ECU 
connector A-02 and powertrain control module connector 

B-19.

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 ABS-ECU connector A-02 and powertrain 

control module connector B-19, 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.

AC305206

CONNECTOR: A-02

AG

A-02 (GR)

HARNESS SIDE

AC306248AD

B-19 (B)

CONNECTOR: B-19

PCM

AIR
CLEANER

HARNESS SIDE

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-462

(4) Measure the resistance between ABS-ECU connector 

terminal 23 and powertrain control module connector 

terminal 18.

OK: 2 ohms or less

(5) Measure the resistance between joint connector (3) 

terminal 24 and powertrain control module connector 

terminal 17.

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, go to 

Step 10.

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 powertrain control module 
connector. 

AC204582

HARNESS SIDE: A-02

HARNESS SIDE: B-19

TEST 
HARNESS

TEST 
HARNESS

3

17

10

13

18

4

11

14

7

16 15

1

2

5

12

9

6

8

JAE

19

18

2

1

25

8

15

16

17

27

28

26

11

9

10

12

13

14

23

24

22 21

7

6

5

4

20

3

CU

AC204582

3

17

10

13

18

4

11

14

7

16 15

1

2

5

12

9

6

8

JAE

19

18

2

1

25

8

15

16

17

27

28

26

11

9

10

12

13

14

23

24

22 21

7

6

5

4

20

3

HARNESS SIDE: A-02

HARNESS SIDE: B-19

TEST 
HARNESS

TEST 
HARNESS

CT