Mitsubishi Grandis. Manual - part 521

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-182

STEP 13. Resistance measurement at the 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.

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.16 and body earth

OK: 1 k

Ω or more

Q: Is the check result normal?

YES : 

<1 k

Ω or more> Go to Step 14.

NO : 

<less than 1 k

Ω> Repair the wiring harness 

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

STEP 14. Connector check: C-07 centre display 
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 15 .

NO : 

Repair the defective connector.

AC310615

AU

Harness side

Connector: C-09 <LHD>

C-09 (GR)

AC310615

AV

Connector: C-37 <LHD>

AC209364LH

Harness side: C-09

Test
harness

AC310613

BC

Connector: C-07 <LHD>

Harness side

C-07 (B)

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-183

STEP 15. 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.3 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 17, 

Diagnose CAN bus lines thoroughly. Refer 
to 

P.54D-452

.

NO : 

<less than 1 

Ω> 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.

AC310613

BC

Connector: C-07 <LHD>

Harness side

C-07 (B)

AC310615

AV

Connector: C-37 <LHD>

A

AC312552 AB

Harness side: C-37

Test 
harness

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

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-184

STEP 17. 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.12 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 17, 

Diagnose CAN bus lines thoroughly. Refer 
to 

P.54D-452

.

NO : 

<less than 1 k

Ω> Repair the wiring harness 

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

STEP 18. 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) 

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

AC209364LL

Harness side: C-09

Test
harness

AC310615

AU

Harness side

Connector: C-09 <LHD>

C-09 (GR)

AC209364LI

Harness side: C-09

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-185

terminal No.17 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 17, 

Diagnose CAN bus lines thoroughly. Refer 
to 

P.54D-452

.

NO : 

<less than 1 k

Ω> Repair the wiring harness 

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

STEP 19. 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.15 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 17, 

Diagnose CAN bus lines thoroughly. Refer 
to 

P.54D-452

.

NO : 

<less than 1 k

Ω> Repair the wiring harness 

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

STEP 20. 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 21 .

NO : 

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

AC310615

AU

Harness side

Connector: C-09 <LHD>

C-09 (GR)

AC209364LM

Harness side: C-09

Test
harness

AC302572AD

Connector: A-07

Harness side