Mitsubishi Grandis. Manual - part 578

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-410

connector (CAN2) 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 result normal?

YES : 

<All the voltages measure 2 

Ω or less> Go 

to Step 2 .

NO : 

<Either or all of the voltages measure more 
than 2 

Ω> Repair the wiring harness 

between joint connector (CAN2) and the 
intermediate connector, and then go to Step 
2.

STEP 8. Resistance measurement at the C-125 
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 front 
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 C-125 intermediate 

connector terminal Nos.26 and 27

OK: 120

± 20 Ω

Q: Is the check result normal?

YES : 

<Within 120

± 20 Ω> Go to Step 16 .

NO : 

<Not within 120

± 20 Ω> Go to Step 9 .

AC310613

AD

Connector: C-125 <LHD>

AC204740

AC204740

AC204740

AC204740

AC204740DC

Male side: C-125

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-411

STEP 9. 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 result normal?

YES : 

Go to Step 10.

NO : 

Repair the connector, or replace the joint 
connector (front wiring harness assembly). 
Then go to Step 8.

STEP 10. Resistance measurement at the 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 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 

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

AC302572AD

Connector: A-07

Harness side

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-412

disconnected.

(4) Resistance between A-07 joint connector (CAN1) 

terminal Nos. 3 and 6

OK: 120 

± 20 Ω

Q: Is the check result normal?

YES : 

<Within 120 

± 20 Ω> Go to Step 15 .

NO : 

<Not within 120 

± 20 Ω> Go to Step 11 .

STEP 11. 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 

terminal Nos.6 and 12

OK: 120 

± 20 Ω

Q: Is the check result normal?

YES : 

<Within 120 

± 20 Ω> Go to Step 12 .

NO : 

<Not within 120 

± 20 Ω> Go to Step 13 .

AC204740

AC204740

AC204740

AC204740

AC204740

AC204740

AC204740DK

Harness side: A-07

Test
harness

Test
harness

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-413

STEP 12. 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