Mitsubishi 380. Manual — part 716

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-275

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB991219: Inspection Test Harness

• MB992045: A/T-ECU Check Harness

• MB992044: ENGINE-ECU Check Harness

STEP 1. 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 2.
NO : Repair the damaged parts.

52DB014A

CONNECTOR: C-29

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-276

STEP 2. Check the instrument panel wiring harness side
CAN bus lines (communication line including the
combination meter). 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 measure the

resistance at its female side connector (instrument panel
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

terminals 11 and 12.

OK: 120

± 20 Ω

Q: Does the resistance measure 120

± 20 Ω?

YES : If the resistance measures 120

± 20 Ω, go to Step 8.

NO : If the resistance does not measure 120

± 20 Ω, go to

Step 3 .

52DB014A

CONNECTOR: C-29

AC204582

AC204582CZ

TEST
HARNESS

TEST
HARNESS

FEMALE SIDE: C-29

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-277

STEP 3. 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: Are joint connector (3) C-02 and combination meter

connector C-101 in good condition?
YES : Go to Step 4.
NO : Repair the damaged parts. Replace the joint

connector as necessary. Then go to Step 2.

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-278

STEP 4. Check the CAN bus lines (communication line
including the combination meter) between joint connector
(3) and the combination meter. Measure the resistance 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

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

(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 joint connector (3)

terminals 4 and 15.

OK: 120

± 20 Ω

Q: Does the resistance measure 120

± 20 Ω?

YES : If the resistance measures 120

± 20 Ω, go to Step 7.

NO : If the resistance does not measure 120

± 20 Ω, go to

Step 5 .

16DB408A

CONNECTOR: C-02

AC209438

11
22

10
21

9

20

8

19

7

18

6

17

5

16

4

15

3

14

2

13

1

12

TEST
HARNESS

AX

TEST

HARNESS

HARNESS SIDE: C-02