Mitsubishi Grandis. Manual — part 541

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-262

STEP 40. Resistance measurement at the C-37
jumper 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 jumper
connector (at the centre display side).

CAUTION

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

P.54D-8

.

(2) Ensure that the negative battery terminal is

disconnected.

(3) Resistance between C-37 jumper connector

terminal No.4 and body earth

OK: 1 k

Ω or more

CAUTION

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

P.54D-8

.

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

Ω> Repair the wiring harness

between the jumper connector and the
centre display connector.

STEP 41. 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 42.

NO :

Repair the defective connector.

AC310631AY

Connector: C-07 <RHD>

Harness side

C-07 (B)

AC310628AZ

Connector: C-37 <RHD>

A

AC312552 AC

Harness side: C-37

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

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-263

STEP 42. 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
harness side.

CAUTION

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

P.54D-8

.

(2) Ensure that the negative battery terminal is

disconnected.

(3) Resistance between C-09 joint connector (CAN2)

terminal No.4 and body earth

OK: 1 k

Ω or more

CAUTION

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

P.54D-8

.

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
SRS-ECU connector.

STEP 43. 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 connector, and measure at the

wiring harness side.

CAUTION

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

P.54D-8

.

(2) Ensure that the negative battery terminal is

disconnected.

(3) Resistance between C-09 joint connector (CAN2)

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

AC209364LY

Harness side: C-09

Test
harness

AC310628AY

Connector: C-09 <RHD>

C-09 (GR)

Harness side

AC209364MJ

Harness side: C-09

Test harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-264

terminal No.7 and body earth

OK: 1 k

Ω or more

CAUTION

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

P.54D-8

.

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
diagnosis connector.

STEP 44. 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 connector, and measure at the

wiring harness side.

CAUTION

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

P.54D-8

.

(2) Ensure that the negative battery terminal is

disconnected.

(3) Resistance between C-09 joint connector (CAN2)

terminal No.11 and body earth

OK: 1 k

Ω or more

CAUTION

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

P.54D-8

.

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
intermediate connector.

STEP 45. 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 46.

NO :

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

AC310628AY

Connector: C-09 <RHD>

C-09 (GR)

Harness side

AC209364MK

Harness side: C-09

Test harness

AC302572AD

Connector: A-07

Harness side

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-265

STEP 46. Resistance measurement at the 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

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 connector, and measure at the

wiring harness side.

CAUTION

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

P.54D-8

.

(2) Ensure that the negative battery terminal is

disconnected.

(3) Resistance between A-07 joint connector (CAN1)

terminal No.6 and body earth

OK: 1 k

Ω or more

(4) Resistance between A-07 joint connector (CAN1)

terminal No.5 and body earth

OK: 1 k

Ω or more

Q: Are the check result normal?

YES <all of the measurement results show 1 k

Ω or

more> :

Go to Step 52.

NO <The resistance between terminal No.6 and
body earth is less than 1 k

Ω> :

Go to Step 47.

NO <The resistance between terminal No.5 and
body earth is less than 1 k

Ω> :

Go to Step 50.

STEP 47. Connector check: A-16 intermediate
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 48.

NO :

Repair the defective connector.

AC302572AD

Connector: A-07

Harness side

AC209364

AC209364

AC209364

AC209364

Harness side: A-07

AC209364LZ

Test harness

AC209364

Harness side: A-07

AC209364MA

Test harness

AC310398

AC

Connector: A-16 <RHD>

A-16 (B)