Mitsubishi Grandis. Manual — part 585

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-438

connector terminal No.23

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 voltages measure 2

Ω or less> Go

to Step 6 .

NO :

<Either or all of the resistances measure
more than 2

Ω> Repair the wiring harness

between joint connector (CAN2) and the
combination meter connector.

STEP 6. Resistance measurement at C-02
combination meter connector.

CAUTION

A digital multimeter should be used. For details
refer to

P.54D-8

.

(1) Remove the combination meter, and measure at

the equipment side.

(2) Resistance between C-02 combination meter

connector terminal Nos. 23 and 24

OK: 120

± 20 Ω

Q: Is the check result normal?

YES :

<120

± 20 within Ω> Diagnose CAN bus

lines thoroughly. Refer to

P.54D-16

.

NO :

<120

± 20 not within Ω> Replace the

combination meter.

AC310613

BB

Connector: C-02 <LHD>

Harness side

AC204740

AC204740

AC204740

AC204740DS

Equipment side: C-02

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-439

STEP 7. Connector check: A-07 joint connector
(CAN1), A-16 intermediate connector and C-112
engine-ECU <M/T> or engine-A/T-ECU <A/T>
connector
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: Are the check results normal?

YES :

Go to Step 8 .

NO :

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

STEP 8. Resistance measurement at the A-16
intermediate 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 connector, and measure at its

male-side intermediate connector (at the control
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) Resistance between A-16 intermediate connector

AC302572AD

Connector: A-07

Harness side

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

AC310403

AC

Connector: A-16 <LHD>

A-16 (B)

AC204740

AC204740

AC204740

AC204740DM

Male side: A-16

Test
harness

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-440

terminal Nos. 6 and 12

OK: 120

± 20 Ω

Q: Is the check result normal?

YES :

<Within 120

± 20 Ω> Go to Step 9 .

NO :

<120

± 20 Ω not within> Go to Step 10 .

STEP 9. Resistance measurement at A-07 joint
connector (CAN1) and A-16 intermediate
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 (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-07 joint connector (CAN1)

terminal No.3 and A-16 intermediate connector
terminal No.12

OK: 2

Ω or less

(5) Continuity between A-07 joint connector (CAN1)

terminal No.6 and A-16 intermediate connector

AC302572AD

Connector: A-07

Harness side

AC310403

AC

Connector: A-16 <LHD>

A-16 (B)

AC312553

AC312553

Test harness

AQ

Harness side: A-07

Female side: A-16

Test
harness

AC312553

AC312553 AR

Harness side: A-07

Female side: A-16

Test
harness

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-441

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 results normal?

YES :

<All the voltages measure 2 V or less>

Diagnose CAN bus lines thoroughly. Refer
to

P.54D-16

.

NO :

<Either or all of the resistances measure
more than 2

Ω> Repair the wiring harness

between joint connector (CAN1) and the
intermediate connector.

STEP 10. 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

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85

86

87

88

89

AC312553

Harness side: C-112

Test
harness

AS

Male side: A-16

Test
harness