Mitsubishi 380. Manual — part 729

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-327

STEP 3. Check intermediate connector C-29 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 intermediate connector C-29 in good condition?

YES : Go to Step 4.
NO : Repair the damaged parts.

STEP 4. Using diagnostic tool MB991958, diagnose the
CAN bus line (Disconnect intermediate connector C-29,
and then determine that a failure is present at either the
front wiring harness side or the instrument panel wiring
harness side).
(1) Disconnect intermediate connector C-29.

CAUTION

To prevent damage to diagnostic tool MB991958, always
turn the ignition switch to the "LOCK" (OFF) position
before connecting or disconnecting diagnostic tool
MB991958.

(2) Connect diagnostic tool MB991958 to the data link

connector.

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

52DB014A

CONNECTOR: C-29

52DB014A

CONNECTOR: C-29

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-328

(4) Diagnose CAN bus lines, and check if the MUT-III screen is

as shown in the illustration.

NOTE: When diagnosing CAN-BUS on vehi-

cles with manual transmission (M/T), disregard
A/T-ECU and it’s wiring circuits and measure
between ABS-ECU and ENGINE-ECU only.

NOTE: When diagnosing CAN-BUS on vehicles
not equipped with a multi-centre display, disre-
gard the multi-centre display and it’s wiring cir-
cuits.

(5) Turn the ignition switch to the "LOCK" (OFF) position.
(6) Connect intermediate connector C-29.

Q: Does the MUT-III screen correspond to the illustration?

YES : If the MUT-III screen corresponds to the illustration,

go to Step 23 .

NO : If the MUT-III screen does not correspond to the

illustration, go to Step 5.

16DB593A

: Red section on screen

ENGINE

ECU

METER

-ECU

ETACS

-ECU

AC-ECU

SRS-ECU

C.DISPLAY

MUT

J/C

ABS-ECU

A/T-ECU

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-329

STEP 5. Check joint connector (3) C-02 and combination
meter connector C-101 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

.

Check the joint connector at the wiring harness side for loose,
corroded or damaged terminals, or terminals pushed back in
the connector, and also check the short pin behind the connec-
tor for corrosion, deformation and delamination.

Q: Is joint connector (3) C-02 in good condition?

YES : Go to Step 6.
NO : Repair the damaged parts. Replace the joint

connector as necessary.

16DB476A

HARNESS SIDE

C-101

CONNECTORS: C-02, C-101

C-02

C-02

C-101

AC209350

1

12

2

13

3

14

4

15

5

16

6

17

7

18

8

19

9

20

10

21

11
22

AB

SHORT PIN

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-330

STEP 6. Using diagnostic tool MB991958, diagnose the
CAN bus line (Disconnect combination meter connector
C-101, and check the combination meter system).
(1) Disconnect combination meter connector C-101.
(2) Turn the ignition switch to the "ON" position.

(3) Diagnose CAN bus lines, and check if the MUT-III screen is

as shown in the illustration.

NOTE: When diagnosing CAN-BUS on vehi-

cles with manual transmission (M/T), disregard
A/T-ECU and it’s wiring circuits and measure
between ABS-ECU and ENGINE-ECU only.

NOTE: When diagnosing CAN-BUS on vehicles
not equipped with a multi-centre display, disre-
gard the multi-centre display and it’s wiring cir-
cuits.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect combination meter connector C-101.

Q: Does the MUT-III screen correspond to the illustration?

YES : If the MUT-III screen corresponds to the illustration,

go to Step 7 .

NO : If the MUT-III screen does not correspond to the

illustration, go to Step 8.

16DB499A

CONNECTOR: C-101

HARNESS SIDE

16DB594A

: Red section on screen

ENGINE

ECU

METER

-ECU

ETACS

-ECU

AC-ECU

SRS-ECU

C.DISPLAY

MUT

J/C

ABS-ECU

A/T-ECU