Mitsubishi Grandis. Manual — part 513

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-150

STEP 15. Voltage 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).

(2) Connect the negative battery terminal, and turn

the ignition switch to the ON position.

(3) Voltage between C-37 jumper connector terminal

No.3 and body earth

OK: Less than 1.0 V

(4) Disconnect the negative battery terminal.

CAUTION

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

P.54D-8

.

Q: Is the check result normal?

YES :

<less than 1.0 V> Follow diagnostic item 20

"Diagnose CAN bus lines thoroughly." Refer
to

P.54D-526

.

NO :

<1.0 V or more> Repair the wiring harness
between the jumper connector and the
centre display connector.

STEP 16. 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 17 .

NO :

Repair the defective connector.

AC310631AY

Connector: C-07 <RHD>

Harness side

C-07 (B)

AC310628AZ

Connector: C-37 <RHD>

AC312551 AB

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-151

STEP 17. Voltage 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.

(2) Connect the negative battery terminal, and turn

the ignition switch to the ON position.

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

terminal No.15 and body earth

OK: Less than 1.0 V

(4) Disconnect the negative battery terminal.

CAUTION

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

P.54D-8

.

Q: Is the check result normal?

YES :

<less than 1.0 V> Follow diagnostic item 20

"Diagnose CAN bus lines thoroughly." Refer
to

P.54D-526

.

NO :

<1.0 V or more> Repair the wiring harness
between the joint connector (CAN2) and the
SRS-ECU connector.

STEP 18. Connector check: C-306 steering wheel
angle sensor 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 19 .

NO :

Repair the defective connector.

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

AC209365KU

Harness side: C-09

Test harness

AC310183

AF

Connector: C-306 <RHD>

Harness side

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-152

STEP 19. Voltage 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

steering wheel angle sensor connector, and
measure at the wiring harness side.

(2) Connect the negative battery terminal, and turn

the ignition switch to the ON position.

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

terminal No.14 and body earth

OK: Less than 1.0 V

(4) Disconnect the negative battery terminal.

CAUTION

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

P.54D-8

.

Q: Is the check result normal?

YES :

<less than 1.0 V> Follow diagnostic item 20

"Diagnose CAN bus lines thoroughly." Refer
to

P.54D-526

.

NO :

<1.0 V or more> Repair the wiring harness
between the joint connector (CAN2) and the
steering wheel angle sensor connector.

STEP 20. Voltage 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.

(2) Connect the negative battery terminal, and turn

the ignition switch to the ON position.

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

AC310628AY

Connector: C-09 <RHD>

C-09 (GR)

Harness side

AC310183

AF

Connector: C-306 <RHD>

Harness side

AC209365JS

Harness side: C-09

Test
harness

AC310628AY

Connector: C-09 <RHD>

C-09 (GR)

Harness side

AC209365JR

Harness side: C-09

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-153

terminal No.18 and body earth

OK: Less than 1.0 V

(4) Disconnect the negative battery terminal.

CAUTION

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

P.54D-8

.

Q: Is the check result normal?

YES :

<less than 1.0 V> Follow diagnostic item 20

"Diagnose CAN bus lines thoroughly." Refer
to

P.54D-526

.

NO :

<1.0 V or more> Repair the wiring harness
between the joint connector (CAN2) and the
diagnosis connector.

STEP 21. Voltage 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.

(2) Connect the negative battery terminal, and turn

the ignition switch to the ON position.

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

terminal No.22 and body earth

OK: Less than 1.0 V

(4) Disconnect the negative battery terminal.

CAUTION

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

P.54D-8

.

Q: Is the check result normal?

YES :

<less than 1.0 V> Follow diagnostic item 20

"Diagnose CAN bus lines thoroughly." Refer
to

P.54D-526

.

NO :

<1.0 V or more> Repair the wiring harness
between the joint connector (CAN2) and the
intermediate connector.

STEP 22. 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 23.

NO :

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

AC310628AY

Connector: C-09 <RHD>

C-09 (GR)

Harness side

AC209365KT

Harness side: C-09

Test harness

AC302572AD

Connector: A-07

Harness side