Mitsubishi 380. Manual — part 713

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-262

STEP 27. Check 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: Is ABS-ECU connector A-02 in good condition?

YES : Go to Step 28.
NO : Repair the damaged parts.

16DB402A

A-02 (GR)

CONNECTOR: A-02

A-02 HARNESS CONNECTOR:

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-263

STEP 28. Check the CAN_L and H lines (communication
lines only) between the ABS-ECU connector and the
intermediate connector for a short circuit. 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 ABS-ECU

connector A-02, and measure the resistance at the male
side 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.

16DB402A

A-02 (GR)

CONNECTOR: A-02

A-02 HARNESS CONNECTOR:

52DB014A

CONNECTOR: C-29

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-264

(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

29 .

NO : If the resistance measures less than 1 k

Ω, repair the

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

STEP 29. Check A/T- ECU connector B-19 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.

NOTE: When diagnosing CAN-BUS on vehicles with
manual transmission (M/T), disregard A/T-ECU and it’s wir-
ing circuits and measure between ABS-ECU and
ENGINE-ECU only.

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 A/T- ECU connector B-19 in good condition?

YES : Go to Step 30.
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

16DB480A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

A/T

CONTROL

UNIT

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-265

STEP 30. Check the CAN_L and H lines (communication
lines only) between the A/T- ECU connector and the
ABS-ECU connector for a short circuit. Measure the
resistance at A/T- ECU 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 A/T- ECU connector B-19 and ABS-ECU

connector A-02, and measure the resistance at the harness
side of A/T- ECU 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.

NOTE: When diagnosing CAN-BUS on vehicles with
manual transmission (M/T), disregard A/T-ECU and it’s wir-
ing circuits and measure between ABS-ECU and
ENGINE-ECU only.

16DB402A

A-02 (GR)

CONNECTOR: A-02

A-02 HARNESS CONNECTOR:

16DB480A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

A/T

CONTROL

UNIT