Mitsubishi Grandis. Manual - part 568

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-370

STEP 27. 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 

disconnected.

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

terminal Nos. 3 and 6

OK: 120

± 20 Ω

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

terminal Nos. 2 and 5

OK: 1 k

Ω or more

Q: Are the check result normal?

AC302572AD

Connector: A-07

Harness side

AC204740

AC204740

AC204740

AC204740

AC204740

AC204740

AC204740DK

Harness side: A-07

Test
harness

Test
harness

AC204740

AC204740

AC204740

AC204740

AC204740

AC204740

AC204740DL

Harness side: A-07

Test
harness

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-371

YES <all of the measurement results are within the 
normal value> : 

Go to Step 37.

NO <The resistance between terminal Nos. 3 and 6 
is less than 120

±20 Ω> : 

Go to Step 28.

NO <The resistance between terminal Nos. 2 and 5 
is less than 1 k

Ω> : 

Go to Step 34.

STEP 28. 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 29.

NO : 

Repair the defective connector.

STEP 29. 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 33 .

NO : 

<Not within 120

± 20 Ω> Go to Step 30.

AC310398

AC

Connector: A-16 <RHD>

A-16 (B)

AC310398

AC

Connector: A-16 <RHD>

A-16 (B)

AC204740

AC204740

AC204740

AC204740DM

Male side: A-16

Test
harness

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-372

STEP 30. 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 31.

NO : 

Repair the defective connector.

STEP 31. 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 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) Resistance between A-16 intermediate connector 

terminal Nos. 6 and 12

OK: More than 2 

Ω

CAUTION

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

P.54D-8

.

Q: Is the check result normal?

YES : 

<More than 2 

Ω> Go to Step 32.

NO : 

<2 

Ω or less> Repair the wiring harness 

between the intermediate connector and the 
engine-ECU <M/T> or engine-A/T-ECU 
<A/T> 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

AC310398

AC

Connector: A-16 <RHD>

A-16 (B)

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

AC204740

AC204740

AC204740

AC204740DM

Male side: A-16

Test
harness

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-373

STEP 32. 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> Follow diagnostic item 

19, Diagnose CAN bus lines thoroughly. 
Refer to 

P.54D-502

.

NO : 

<Not within 120

± 20 Ω> Replace the 

engine-ECU <M/T> or engine-A/T-ECU 
<A/T>.

STEP 33. 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 

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

AC312553

Equipment side: C-112

Test
harness

AC

Test
harness

AC302572AD

Connector: A-07

Harness side