Mitsubishi 380. Manual — part 705

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-230

STEP 48. 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 49.
NO : Repair the damaged parts.

STEP 49. Check the CAN_L line (communication line only)
between intermediate connector C-29 and ABS-ECU
connector for short to ground. 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

.

16DB402A

A-02 (GR)

CONNECTOR: A-02

A-02 HARNESS CONNECTOR:

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-231

(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.

(4) Measure the resistance between intermediate connector

terminal 12 and body ground.

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

50 .

NO : If the resistance measures less than 1 k

Ω, repair the

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

16DB402A

A-02 (GR)

CONNECTOR: A-02

A-02 HARNESS CONNECTOR:

52DB014A

CONNECTOR: C-29

AC209364

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

MALE SIDE: C-29

TEST HARNESS

GA

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-232

STEP 50. Check the CAN_L line (communication line only)
between the A/T- ECU connector and ABS-ECU connector
for short to ground. Measure the resistance at A/T- ECU
connector B-19.

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

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

.

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-233

(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.

(4) Measure the resistance between A/T- ECU connector

terminal 14 and body ground.

OK: 1 k

Ω or more

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

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

51 .

NO : If the resistance measures less than 1 k

Ω, repair the

16DB402A

A-02 (GR)

CONNECTOR: A-02

A-02 HARNESS CONNECTOR:

16DB480A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

A/T

CONTROL

UNIT

16DB495A

B-19

TEST
HARNESS