Mitsubishi Galant 9G. Manual — part 1324

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-400

STEP 8. Check the front wiring harness side CAN bus lines
(communication line including the powertrain control
module). 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

terminals 11 and 12.

OK: 120

± 20 Ω

Q: Does the resistance measure 120

± 20 Ω?

YES : If the resistance measures 120

± 20 Ω, go to Step 12.

NO : If the resistance does not measure 120

± 20 Ω, go to

Step 9 .

AC305231AI

CONNECTOR: C-29

AC204582

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

BX

TEST
HARNESS

TEST
HARNESS

MALE SIDE: C-29

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-401

STEP 9. 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 10.
NO : Repair the damaged parts, and then go to Step 8.

AC306248AD

B-19 (B)

CONNECTOR: B-19

PCM

AIR
CLEANER

HARNESS SIDE

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-402

STEP 10. Check the CAN bus lines (communication line
only) between intermediate connector C-29 and the
powertrain control module. Measure the resistance at
intermediate connector C-29 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 intermediate connector C-29 and powertrain

control module connector B-19, and measure the resistance
between the wiring harness side connector of powertrain
control module connector B-19 and the male side connector
of intermediate connector C-29 (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.

AC306248AD

B-19 (B)

CONNECTOR: B-19

PCM

AIR
CLEANER

HARNESS SIDE

AC305231AI

CONNECTOR: C-29

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-403

(4) Measure the resistance between intermediate connector

terminal 11 and powertrain control module connector
terminal 17.

OK: 2 ohms or less

(5) Measure the resistance between intermediate connector

terminal 12 and powertrain control module connector
terminal 18.

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 11.

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 intermediate
connector C-29 and the powertrain control module
connector, and then go to Step 8.

AC204582

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

AC204582

TEST
HARNESS

3

17

10

13

18

4

11

14

7

16 15

1

2

5

12

9

6

8

JAE

HARNESS SIDE: B-19

TEST
HARNESS

CY

MALE SIDE: C-29

AC204582

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

AC204582

TEST
HARNESS

HARNESS SIDE: B-19

TEST
HARNESS

3

17

10

13

18

4

11

14

7

16 15

1

2

5

12

9

6

8

JAE

CX

MALE SIDE: C-29