Mitsubishi 380. Manual — part 873

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-26

STEP 10. Check the wiring harness between ETACS-ECU
connector C-219 (terminal 3) and ground.

NOTE: Also check connector C-211, check the wires. If con-
nector C-211 is damaged, repair or replace them. Refer to
GROUP 00E, Harness Connector Inspection

P.00E-2

.

Q: Is the wiring harness between ETACS-ECU connector

C-219 (terminal 3) and ground in good condition?
YES : There is no action to be taken.
NO : Repair the wiring harness. Confirm that diagnostic

tool MB991958 communicates normally.

STEP 11. Check the CAN_H line (communication line
including the ETACS-ECU) between joint connector (3) and
the ETACS-ECU connector for a short to the power supply.
Measure the voltage at joint connector (3) C-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 joint connector (3) C-02, and measure the

voltage at the wiring harness side of joint connector (3)
C-02.

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

(3) Measure the voltage between joint connector (3) terminal 5

and body ground.

OK: 4.0 V or less

Q: Does the voltage measure 4.0 V or less?

YES : If the voltage measures 4.0 V or less, go to Step 14.
NO : If the voltage measures more than 4.0 V, go to Step

12.

16DB408A

CONNECTOR: C-02

AC209365

11
22

10

21

9

20

8

19

7

18

6

17

5

16

4

15

3

14

2

13

1

12

AC209365

AC209365

HARNESS SIDE: C-02

TEST HARNESS

FR

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-27

STEP 12. Check ETACS-ECU connector C-218 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 ETACS-ECU connector C-218 in good condition?

YES : Go to Step 13.
NO : Repair the damaged parts.

54DB005A

CONNECTOR: C-218

JUNCTION BLOCK
(REAR VIEW)

C-218 (GR)

HARNESS SIDE

45

46

48 47

49

50
59

51
60

52

53
62

65

61

54
63

56

68

64

67 66

57

58

55

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-28

STEP 13. Check the CAN_H line (communication line only)
between joint connector (3) and ETACS-ECU connector for
a short to the power supply. Measure the voltage at joint
connector (3) C-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 joint connector (3) C-02 and ETACS-ECU

connector C-218, and measure the voltage at the wiring
harness side of joint connector (3) C-02.

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

(3) Measure the voltage between joint connector (3) terminal 5

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, diagnose CAN

bus lines thoroughly by referring to

P.54C-31

without

multi-centre display or

P.54C-81

with multi-centre

display.

NO : If the voltage measures more than 1.0 V, repair the

wiring harness between joint connector (3) and the
ETACS-ECU connector.

54DB005A

CONNECTOR: C-218

JUNCTION BLOCK
(REAR VIEW)

C-218 (GR)

HARNESS SIDE

45

46

48 47

49

50
59

51
60

52

53
62

65

61

54
63

56

68

64

67 66

57

58

55

16DB408A

CONNECTOR: C-02

AC209365

11
22

10

21

9

20

8

19

7

18

6

17

5

16

4

15

3

14

2

13

1

12

AC209365

AC209365

HARNESS SIDE: C-02

TEST HARNESS

FR

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-29

STEP 14. Replace the ETACS-ECU or Engine-ECU.
Replace the ETACS-ECU or Engine-ECU.

Q: Did the communication with the diagnostic tool become

possible after replacing the ETACS-ECU or the
Engine-ECU?
YES : Register the password (secret code) and encrypted

code

P.54A-37

.

NO : Replace the Engine-ECU. Then register the password

(secret code) and encrypted code (Refer to

P.54A-37

).