Mitsubishi Grandis. Manual — part 598

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-490

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-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 23 .

NO :

Repair the defective connector.

STEP 23. MUT-III CAN bus diagnostics (C-119
steering wheel angle sensor connector
disconnected)

(1) Disconnect the steering wheel angle sensor

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 34 .

STEP 24. Resistance measurement at C-09 joint
connector (CAN2) and C-306 steering wheel
angle sensor 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

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

AC310153AF

Connector: C-306 <LHD>

Harness side

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

AC309834

MUT

J/C (2)

METER

ETAC S

J/C (1)

ASC -ECU

ENG/AT-ECU

A/C -ECU

SRS-ECU

STR. A .

SNSR

C. DISPL AY

AN

: Red section

on screen

AC310615

AU

Harness side

Connector: C-09 <LHD>

C-09 (GR)

AC310153AF

Connector: C-306 <LHD>

Harness side

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-491

(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.8 and C-306 steering wheel angle

sensor connector terminal No.3

OK: 2

Ω or less

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

terminal No.19 and C-306 steering wheel angle
sensor connector terminal No.4

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 steering wheel angle
sensor may be suspected. Diagnose the
ASC system. Refer to

P.35C-135

.

NO :

<Either or all of the resistances measure
more than 2

Ω> Repair the wiring harness

between the joint connector (CAN2) and the
steering wheel angle sensor connector.

AC204582

Harness side: C-09

EI

Harness side: C-306

Test
harness

Test
harness

AC204582

Harness side: C-09

EJ

Harness side: C-306

Test
harness

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-492

STEP 25. 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 26 .

NO :

Repair the defective connector.

STEP 26. 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 27 .

NO :

<MUT-III indications do not correspond to
the illustration> Go to Step 30 .

STEP 27. 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 28 .

NO :

Repair the defective connector.

AC310615

AS

Harness side

Connector: C-112 <LHD>

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

AC310615

AS

Harness side

Connector: C-112 <LHD>

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

AC309834

MUT

J/C (2)

METER

ETAC S

J/C (1)

ASC -ECU

ENG/AT-ECU

A/C -ECU

SRS-ECU

STR. A .

SNSR

C. DISPL AY

AI

: Red section

on screen

AC310403

AC

Connector: A-16 <LHD>

A-16 (B)

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-493

STEP 28. 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

AC310403

AC

Connector: A-16 <LHD>

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