Mitsubishi Grandis. Manual — part 591

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-462

STEP 17. Resistance measurement at C-37
jumper connector and C-09 joint connector
(CAN2).

CAUTION

A digital multimeter should be used. For details
refer to

P.54D-8

.

CAUTION

The test wiring harness should be used. For
details refer to

P.54D-8

.

(1) Disconnect the joint connector (CAN2) and the

jumper connector, and measure at the wiring
harness side.

(2) Ignition switch: OFF (LOCK)

CAUTION

When measuring the resistance, disconnect the
negative battery terminal. For details refer to

P.54D-8

.

(3) Ensure that the negative battery terminal is

disconnected.

(4) Continuity between C-37 jumper connector

terminal No.2 and C-09 joint connector (CAN2)
terminal No.16

OK: 2

Ω or less

(5) Continuity between C-37 jumper connector

terminal No.5 and C-09 joint connector (CAN2)

AC310615

AV

Connector: C-37 <LHD>

AC310615

AU

Harness side

Connector: C-09 <LHD>

C-09 (GR)

AC312553BI

Harness side: C-09

Test
harness

Test
harness

Harness side: C-37

AC312553

Harness side: C-09

Test
harness

Test
harness

Harness side: C-37

BJ

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-463

terminal No.5

OK: 2

Ω or less

CAUTION

Strictly observe the specified wiring harness
repair procedure. For details refer to

P.54D-8

.

Q: Are the check results normal?

YES :

<All the voltages measure 2

Ω or less> Go

to Step 18 .

NO :

<Either or all of the resistances measure
more than 2

Ω> Repair the wiring harness

between joint connector (CAN2) and the
jumper connector.

STEP 18. Resistance measurement at C-37
jumper connector and C-07 centre display
connector.

CAUTION

A digital multimeter should be used. For details
refer to

P.54D-8

.

CAUTION

The test wiring harness should be used. For
details refer to

P.54D-8

.

(1) Disconnect the centre display connector and the

jumper connector, and measure at the wiring
harness side.

(2) Ignition switch: OFF (LOCK)

CAUTION

When measuring the resistance, disconnect the
negative battery terminal. For details refer to

P.54D-8

.

(3) Ensure that the negative battery terminal is

disconnected.

(4) Continuity between C-37 jumper connector

terminal No.4 and C-07 centre display connector

AC310613

BC

Connector: C-07 <LHD>

Harness side

C-07 (B)

AC310615

AV

Connector: C-37 <LHD>

AC312553

Test
harness

Harness side: C-07

Test
harness

Harness side: C-37

BM

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-464

terminal No.5.

OK: 2

Ω or less

(5) Continuity between C-37 jumper connector

terminal No.3 and C-07 centre display connector
terminal No.15.

OK: 2

Ω or less

CAUTION

Strictly observe the specified wiring harness
repair procedure. For details refer to

P.54D-8

.

Q: Are the check results normal?

YES :

<All the resistances measure 2

Ω or less>

Power supply to the centre display may be
suspected. Diagnose the centre display
system. Refer to

P.54A-161

.

NO :

<Either or all of the resistances measure
more than 2

Ω> Repair the wiring harness

between the centre display connector and
the jumper connector.

STEP 19. Connector check: C-119 SRS-ECU
connector

CAUTION

The strand end of the twist wire should be within
10 cm from the connector. For details refer to

P.54D-8

.

Q: Is the check result normal?

YES :

Go to Step 20 .

NO :

Repair the defective connector.

STEP 20. MUT-III CAN bus diagnostics (C-119
SRS-ECU connector disconnected)

(1) Disconnect the SRS-ECU connector, and

diagnose by using the MUT-III.

(2) Check that the MUT-III indications correspond to

the illustration.

Q: Is the check result normal?

AC312553

Harness side: C-07

Test
harness

Test
harness

Harness side: C-37

BN

AC310613

BD

Connector: C-119
<LHD>

Harness side

C-119 (Y)

48

37

26

42

31

45

34

47

36

46

35

44

33

43

32

25 24

39

28

41

30

40

29

38

27

23

21

22

A

B

AC310613

BD

Connector: C-119
<LHD>

Harness side

C-119 (Y)

48

37

26

42

31

45

34

47

36

46

35

44

33

43

32

25 24

39

28

41

30

40

29

38

27

23

21

22

A

B

AC309836

MUT

J/C (2)

METER

ETAC S

J/C (1)

ABS-ECU

ENG/AT-ECU

A/C -ECU

C. DISPL AY

SRS-ECU

AO

: Red section

on screen

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-465

YES :

<MUT-III indications correspond to the

illustration> Go to Step 21 .

NO :

<MUT-III indications do not correspond to
the illustration> Go to Step 31 .

STEP 21. Resistance measurement at C-09 joint
connector (CAN2) and C-119 SRS-ECU
connector.

CAUTION

A digital multimeter should be used. For details
refer to

P.54D-8

.

CAUTION

The test wiring harness should be used. For
details refer to

P.54D-8

.

(1) Disconnect the joint connector (CAN2) and the

SRS-ECU connector, and measure at the wiring
harness side.

(2) Ignition switch: OFF (LOCK)

CAUTION

When measuring the resistance, disconnect the
negative battery terminal. For details refer to

P.54D-8

.

(3) Ensure that the negative battery terminal is

disconnected.

(4) Continuity between C-09 joint connector (CAN2)

terminal No.1 and C-119 SRS-ECU connector
terminal No.32

OK: 2

Ω or less

(5) Continuity between C-09 joint connector (CAN2)

terminal No.12 and C-119 SRS-ECU connector

AC310615

AU

Harness side

Connector: C-09 <LHD>

C-09 (GR)

AC310613

BD

Connector: C-119
<LHD>

Harness side

C-119 (Y)

48

37

26

42

31

45

34

47

36

46

35

44

33

43

32

25 24

39

28

41

30

40

29

38

27

23

21

22

A

B

AC312553

Harness side: C-09

Test
harness

Harness side: C-119

Test
harness

BS

AC312553

Harness side: C-09

Test
harness

Test
harness

Harness side: C-119

BO