Mitsubishi 380. Manual — part 660

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-51

STEP 20. Check ABS-ECU connector A-02 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.

• Refer to circuit diagrams GROUP-

90

• Refer to configuration diagrams GROUP-

80

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 21.
NO : Repair the damaged parts.

STEP 21. Check the CAN_H line (communication line only)
between intermediate connector C-29 and ABS-ECU
connector for a short to the power supply. Measure the
voltage 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-52

(1) Disconnect intermediate connector C-29 and ABS-ECU

connector A-02, and measure the voltage at the male side
of intermediate connector C-29 (at front wiring harness
side).

(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between intermediate connector

terminal 11 and body ground.

OK: 1.0 V or less

CAUTION

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

P.54C-5

.

Q: Does the voltage measure 1.0 V or less?

YES : If the voltage measures 1.0 V or less, go to Step 22.
NO : If the voltage measures more than 1.0 V, repair the

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

16DB402A

A-02 (GR)

CONNECTOR: A-02

A-02 HARNESS CONNECTOR:

AC209365

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

AC209365

MALE SIDE: C-29

TEST
HARNESS

FP

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-53

STEP 22. Check the CAN_H line (communication line only)

between the A/T-ECU connector and ABS-ECU connector

for a short to the power supply. Measure voltage 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 voltage at the harness
side of A/T-ECU connector B-19.

(2) Turn the ignition switch to the "ON" position.

16DB480A

COVER

ENGINE
CONTROL
UNIT

AIR
CLEANER

A/T
CONTROL
UNIT

16DB402A

A-02 (GR)

CONNECTOR: A-02

A-02 HARNESS CONNECTOR:

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-54

(3) Measure the voltage between A/T-ECU connector terminal

13 and body ground.

OK: 1.0 V or less

CAUTION

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

P.54C-5

.

Q: Does the voltage measure 1.0 V or less?

YES : If the voltage measures 1.0 V or less, go to Step 23.
NO : If the voltage measures more than 1.0 V, repair the

wiring harness between ENGINE-ECU connector and
ABS-ECU connector.

STEP 23. Check the CAN_H line inside the ABS-ECU for a
short to the power supply. Measure the voltage at
ABS-ECU connector A-02.

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 ABS-ECU connector A-02.

16DB481A

B-19

TEST
HARNESS

16DB402A

A-02 (GR)

CONNECTOR: A-02

A-02 HARNESS CONNECTOR: