Mitsubishi Grandis. Manual — part 604

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-514

terminal No.5.

OK: 2

Ω or less

(5) Continuity between C-37 jumper connector

terminal No.3 and C-07 centre display connector
terminal No.15.

OK: 2

Ω or less

CAUTION

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

P.54D-8

.

Q: Are the check results normal?

YES :

<All the resistances measure 2 TAG or

less> Power supply to the centre display
may be suspected. Diagnose the centre
display system. Refer to

P.54A-161

.

NO :

<Either or all of the resistances measure
more than 2

Ω> Repair the wiring harness

between the centre display connector and
the jumper connector.

STEP 19. 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 20 .

NO :

Repair the defective connector.

STEP 20. MUT-III CAN bus diagnostics (C-119
SRS-ECU connector disconnected)

(1) Disconnect the SRS-ECU connector, and

diagnose by using the MUT-III.

(2) Check that the MUT-III indications correspond to

the illustration.

Q: Is the check result normal?

AC312553

Harness side: C-07

Test
harness

Test
harness

Harness side: C-37

BN

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

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

AC309836

MUT

J/C (2)

METER

ETAC S

J/C (1)

ABS-ECU

ENG/AT-ECU

A/C -ECU

C. DISPL AY

SRS-ECU

AO

: Red section

on screen

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-515

YES :

<MUT-III indications correspond to the

illustration> Go to Step 21 .

NO :

<MUT-III indications do not correspond to
the illustration> Go to Step 31 .

STEP 21. Resistance measurement at C-09 joint
connector (CAN2) and C-119 SRS-ECU
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 joint connector (CAN2) and the

SRS-ECU 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 No.4 and C-119 SRS-ECU connector
terminal No.32

OK: 2

Ω or less

(5) Continuity between C-09 joint connector (CAN2)

terminal No.15 and C-119 SRS-ECU 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

AC312553

Harness side: C-09

Test
harness

Harness side: C-119

Test
harness

BP

AC312553 BQ

Test
harness

Harness side: C-09

Test
harness

Harness side: C-119

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-516

terminal No.43

OK: 2

Ω or less

CAUTION

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

P.54D-8

.

Q: Are the check results normal?

YES :

<All the resistances measure 2

Ω or less>

Power supply to the SRS-ECU may be
suspected. Diagnose the SRS system.
Refer to

P.52B-201

.

NO :

<Either or all of the resistances measure
more than 2

Ω> Repair the wiring harness

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

STEP 22. Connector check: C-112 engine-ECU
<M/T> or engine-A/T-ECU <A/T> 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 23 .

NO :

Repair the defective connector.

STEP 23. MUT-III CAN bus diagnostics (C-112
engine-ECU <M/T> or engine-A/T-ECU <A/T>
connector disconnected)

(1) Disconnect the engine-ECU <M/T> or

engine-A/T-ECU <A/T> connector, and diagnose
by using the MUT-III.

(2) Check that the MUT-III indications correspond to

the illustration.

Q: Is the check result normal?

YES :

<MUT-III indications correspond to the

illustration> Go to Step 24 .

NO :

<MUT-III indications do not correspond to
the illustration> Go to Step 27 .

STEP 24. 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 25 .

NO :

Repair the defective connector.

AC310628AW

Harness side

Connector: C-112 <RHD>

C-112 (GR)

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

AC310628AW

Harness side

Connector: C-112 <RHD>

C-112 (GR)

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

AC309836

MUT

J/C (2)

METER

ETAC S

J/C (1)

ABS-ECU

ENG/AT-ECU

A/C -ECU

C. DISPL AY

SRS-ECU

AE

: Red section

on screen

AC310398

AC

Connector: A-16 <RHD>

A-16 (B)

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-517

STEP 25. Resistance measurement at A-16
intermediate connector and 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 joint connector (CAN1) 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 A-16 intermediate connector

terminal No.6 and A-07 joint connector (CAN1)
terminal No.6

OK: 2

Ω or less

(5) Continuity between A-16 intermediate connector

terminal No.12 and A-07 joint connector (CAN1)

AC302572AD

Connector: A-07

Harness side

AC310398

AC

Connector: A-16 <RHD>

A-16 (B)

AC312553

AC312553 AR

Harness side: A-07

Female side: A-16

Test
harness

Test
harness

AC312553

AC312553

Test harness

AQ

Harness side: A-07

Female side: A-16

Test
harness