Mitsubishi Galant 9G. Manual — part 1313

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-356

(4) Measure the resistance between intermediate connector

terminals 11 and 12.

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

28 .

NO : If the resistance measures less than 1 k

Ω, repair the

wiring harness between intermediate connector C-29
and ABS-ECU connector.

STEP 28. 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 29.
NO : Repair the damaged parts.

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

AC306248AD

B-19 (B)

CONNECTOR: B-19

PCM

AIR
CLEANER

HARNESS SIDE

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-357

STEP 29. Check the CAN_L and H lines (communication
lines only) between the powertrain control module
connector and the ABS-ECU connector for a short circuit.
Measure the resistance at 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 powertrain control module connector B-19 and

ABS-ECU connector A-02, and measure the resistance at
the harness side of powertrain control module connector
B-19.

(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-358

(4) Measure the resistance between powertrain control module

connector terminals 17 and 18.

OK: 1 k

Ω or more

CAUTION

Strictly observe the specified wiring harness repair proce-
dure. For details refer to

P.54C-5

.

Q: Does the resistance measure 1 k

Ω or more?

YES : If the resistance measures 1 k

Ω or more, go to Step

30 .

NO : If the resistance measures less than 1 k

Ω, repair the

wiring harness between powertrain control module
connector and ABS-ECU connector.

STEP 30. Check the ABS-ECU for short circuit. Measure
the resistance at ABS-ECU connector A-02.

CAUTION

A digital multimeter should be used. For details refer to

P.54C-4

.

(1) Disconnect ABS-ECU connector A-02, and measure the

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

(2) Measure the resistance between ABS-ECU connector

terminals 7 and 25.

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

31 .

NO : If the resistance measures less than 1 k

Ω, replace the

ABS-ECU.

AC209438

AC209438

AC209438

HARNESS SIDE: B-19

BC

TEST
HARNESS

TEST
HARNESS

AC305206

CONNECTOR: A-02

AG

A-02 (GR)

HARNESS SIDE

AC209438

COMPONENT SIDE: A-02

TEST
HARNESS

AB

TEST
HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-359

STEP 31. Check the powertrain control module for short
circuit. 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, diagnose CAN

bus lines thoroughly by referring to

P.54C-486

.

NO : If the resistance does not measure 120

± 20 Ω,

replace the powertrain control module.

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