Mitsubishi Grandis. Manual — part 567

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-366

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) Resistance between C-09 joint connector (CAN2)

terminal Nos. 9 and 20

OK: 1 k

Ω or more

Q: Is the check result normal?

YES :

<1 k

Ω or more> Follow diagnostic item 19,

Diagnose CAN bus lines thoroughly. Refer
to

P.54D-502

.

NO :

<Less than 1 k

Ω> Repair the wiring harness

between the joint connector (CAN2) and the
jumper connector.

STEP 20. 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 21.

NO :

Repair the defective connector.

STEP 21. Resistance measurement at 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

SRS-ECU connector, and measure at the wiring

AC204740DP

Harness side: C-09

Test
harness

Test
harness

AC310631AZ

Connector: C-119 <RHD>

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

AC310628AY

Connector: C-09 <RHD>

C-09 (GR)

Harness side

AC310631AZ

Connector: C-119 <RHD>

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

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-367

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 Nos. 4 and 15

OK: More than 2

Ω

CAUTION

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

P.54D-8

.

Q: Is the check result normal?

YES :

<More than 2

Ω> Go to Step 22.

NO :

<2

Ω or less> Repair the wiring harness

between joint connector (CAN2) and the
SRS-ECU connector.

STEP 22. Resistance measurement at C-119
SRS-ECU connector.

CAUTION

A digital multimeter should be used. For details
refer to

P.54D-8

.

(1) Remove the SRS-ECU, and measure at the

equipment side.

(2) Resistance between C-119 SRS-ECU connector

terminal Nos. 32 and 43

OK: 1 k

Ω or more

Q: Is the check result normal?

YES :

<1 k

Ω or more> Follow diagnostic item 19,

Diagnose CAN bus lines thoroughly. Refer
to

P.54D-502

.

NO :

<Less than 1 k

Ω> Replace the SRS-ECU.

AC204740DQ

Harness side: C-09

Test
harness

Test
harness

AC310631AZ

Connector: C-119 <RHD>

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

Test
harness

Equipment side: C-119

AH

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-368

STEP 23. Connector check: C-126 diagnosis
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 24.

NO :

Repair the defective connector.

STEP 24. Resistance measurement at 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

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 Nos. 7 and 18

OK: More than 2

Ω

CAUTION

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

P.54D-8

.

Q: Is the check result normal?

YES :

<2 more than

Ω> Follow diagnostic item 19,

Diagnose CAN bus lines thoroughly. Refer
to

P.54D-502

.

NO :

<2

Ω or less> Repair the wiring harness

between joint connector (CAN2) and the
diagnosis connector.

AC310631AK

Connector: C-126 <RHD>

C-126 (B)

Harness side
(Front side)

AC310628AY

Connector: C-09 <RHD>

C-09 (GR)

Harness side

AC204740DD

Harness side: C-09

Test
harness

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-369

STEP 25. Resistance measurement at 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

intermediate 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 Nos. 11 and 22

OK: More than 2

Ω

CAUTION

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

P.54D-8

.

Q: Is the check result normal?

YES :

<2 more than

Ω> Follow diagnostic item 19,

Diagnose CAN bus lines thoroughly. Refer
to

P.54D-502

.

NO :

<2

Ω or less> Repair the wiring harness

between joint connector (CAN2) and the
intermediate connector.

STEP 26. Connector check: A-07 joint connector
(CAN1)
NOTE: When checking A-07 joint connector (CAN1),
disassemble and check the engine compartment
relay box by referring to

P.54D-616

.

CAUTION

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

P.54D-8

.

When checking the joint connector, ensure that its
wiring harness side is not damaged.

Q: Is the check result normal?

YES :

Go to Step 27.

NO :

Repair a defective connector or replace the
joint connector (front wiring harness
assembly).

AC310628AY

Connector: C-09 <RHD>

C-09 (GR)

Harness side

AC204740DR

Harness side: C-09

Test
harness

Test
harness

AC302572AD

Connector: A-07

Harness side