Mitsubishi Galant 9G. Manual — part 1329

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-420

STEP 10. 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.

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, go to Step 13.

NO : If the resistance does not measure 120

± 20 Ω, go to

Step 11 .

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-421

STEP 11. Check the CAN bus lines (communication line
only) between ABS-ECU and the powertrain control
module. Measure the resistance at 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-422

(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 ABS-ECU connector

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 12.

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 the
ABS-ECU connector and the powertrain control
module connector, and then go to Step 8.

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

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-423

STEP 12. Check the terminator resistor inside the
powertrain control module. Measure the resistance at
powertrain control module connector B-19.

CAUTION

A digital multimeter should be used. For details refer to

P.54C-4

.

(1) Disconnect powertrain control module connector B-19, and

measure the resistance at the component side of
powertrain control module connector B-19.

(2) Measure the resistance between powertrain control module

connector terminals 17 and 18.

OK: 120

± 20 Ω

Q: Does the resistance measure 120

± 20 Ω?

YES : If the resistance measures 120

± 20 Ω, go to Step 8.

NO : If the resistance does not measure 120

± 20 Ω,

replace the powertrain control module, and then go to
Step 8.

AC306248AD

B-19 (B)

CONNECTOR: B-19

PCM

AIR
CLEANER

HARNESS SIDE

AC209438

AC209438

AC209438

AC209438

COMPONENT SIDE: B-19

BD

TEST
HARNESS

TEST
HARNESS