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