Mitsubishi Grandis. Manual — part 579

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-414

terminal No.6

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 result normal?

YES :

<All the voltages measure 2

Ω or less> Go

to Step 8 .

NO :

<Either or all of the voltages measure more
than 2

Ω> Repair the wiring harness

between joint connector (CAN1) and the
intermediate connector, and then go to Step
8.

STEP 13. Resistance measurement at A-16
intermediate connector and C-112 engine-ECU
<M/T> or engine-A/T-ECU <A/T> 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 engine-ECU <M/T> or

engine-A/T-ECU <A/T> connector 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 C-112 engine-ECU <M/T> or
engine-A/T-ECU <A/T> connector terminal

AC310403

AC

Connector: A-16 <LHD>

A-16 (B)

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

AC312553

Harness side: C-112

Test
harness

AS

Male side: A-16

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-415

No.61.

OK: 2

Ω or less

(5) Continuity between A-16 intermediate connector

terminal No.12 and C-112 engine-ECU <M/T> or
engine-A/T-ECU <A/T> connector terminal
No.62.

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 result normal?

YES :

<All the voltages measure 2

Ω or less> Go

to Step 14 .

NO :

<Either or all of the voltages measure more
than 2

Ω> Repair the wiring harness

between the engine-ECU <M/T> or
engine-A/T-ECU <A/T> connector and the
intermediate connector, and then go to Step
8.

STEP 14. Resistance measurement at C-112
engine-ECU <M/T> or engine-A/T-ECU <A/T>
connector.

CAUTION

A digital multimeter should be used. For details
refer to

P.54D-8

.

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

engine-A/T-ECU <A/T>, and measure at the
equipment side.

(2) Resistance at C-112 engine-ECU <M/T> or

engine-A/T-ECU <A/T> connector terminal Nos.
61 and 62

OK: 120

± 20 Ω

Q: Is the check result normal?

YES :

<Within 120

± 20 Ω> Go to Step 8 .

NO :

<Not within 120

± 20 Ω> Replace the

engine-ECU <M/T> or engine-A/T-ECU
<A/T>, and then go to Step 8.

AC312553

Harness side: C-112

Test
harness

AT

Test
harness

Male side: A-16

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

AC312553

Equipment side: C-112

Test
harness

AC

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-416

STEP 15. Resistance measurement at C-125
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 C-125 intermediate

connector terminal No.26 and A-07 joint
connector (CAN1) terminal No.4

OK: 2

Ω or less

(5) Continuity between C-125 intermediate

connector terminal No.27 and A-07 joint

AC302572AD

Connector: A-07

Harness side

AC310613

AD

Connector: C-125 <LHD>

AC312553 AU

Male side: C-125

Test harness

Harness side: A-07

Test
harness

AC312553

Male side: C-125

Test harness

AV

Harness side: A-07

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-417

connector (CAN1) terminal No.1

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 result normal?

YES :

<All the voltages measure 2

Ω or less> Go

to Step 8 .

NO :

<Either or all of the voltages measure more
than 2

Ω> Repair the wiring harness

between joint connector (CAN1) and the
intermediate connector, and then go to Step
8.

STEP 16. Connector check: C-126 diagnosis
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 connector, or replace the joint
connector. Then go to Step 17.

STEP 17. Resistance measurement at C-09 joint
connector (CAN2) and C-126 diagnosis
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

diagnosis 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

AC310613

AO

Connector: C-126 <LHD>

Harness side
(Front side)

C-126 (B)

AC310615

AU

Harness side

Connector: C-09 <LHD>

C-09 (GR)

AC310613

AO

Connector: C-126 <LHD>

Harness side
(Front side)

C-126 (B)