Mitsubishi Galant 9G. Manual — part 1325

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-404

STEP 11. 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

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-405

STEP 12. Check the CAN bus lines (communication line
only) between joint connector (3) and the data link
connector. Measure the resistance at joint connector (3)
C-02 and 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 joint connector (3) C-02, and measure the

resistance between the wiring harness side connector of
joint connector (3) C-02 and wiring harness side connector
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.

AC305232

C-125

CONNECTORS: C-02, C-125

AF

C-02

C-02

C-125 (B)

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-406

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

terminal 18 and data link connector terminal 14.

OK: 2 ohms or less

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

terminal 7 and data link connector terminal 6.

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 <all the resistances measure 2 ohms or less: When
any repair done> : Retest the system.
YES <all the resistances measure 2 ohms or less: When
no repair done> : Diagnose CAN bus lines thoroughly by

referring to

P.54C-456

.

AC204582DI

11

22

10

21

9

20

8

19

7

18

6

17

5

16

4

15

3

14

2

13

1

12

TEST
HARNESS

HARNESS SIDE: C-02

TEST
HARNESS

Y

8

16

15

7

5

1314

6

12

4

2

1011

3

9

1

HARNESS SIDE: C-125

AC204582

HARNESS SIDE: C-02

TEST
HARNESS

DH

11

22

10

21

9

20

8

19

7

18

6

17

5

16

4

15

3

14

2

13

1

12

Y

8

16

15

7

5

1314

6

12

4

2

1011

3

9

1

TEST
HARNESS

HARNESS SIDE: C-125

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-407

DIAGNOSTIC ITEM 11: Diagnose terminator resistors at both ends <Vehicles with ABS>

CAUTION

When servicing a CAN bus line, ground yourself
by touching a metal object such as an unpainted
water pipe. If you fail to do so, a component con-
nected to the CAN bus line may be damaged.

POWERTRAIN
CONTROL MODULE

ABS-ECU

JOINT
CONNECTOR (3)

COMBINATION
METER