Mitsubishi Grandis. Manual - part 575

 

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Mitsubishi Grandis. Manual - part 575

 

 

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-398

STEP 33. 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 34.

NO : 

Repair the defective connector.

STEP 34. 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 

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 35.

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-399

STEP 35. 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 

Q: Is the check result normal?

YES : 

<Within 120

± 20 Ω> Follow diagnostic item 

20, Diagnose CAN bus lines thoroughly. 
Refer to 

P.54D-526

.

NO : 

<Not within 120

± 20 Ω> Replace the 

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

STEP 36. 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

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-400

disconnected.

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

terminal Nos. 3 and 6

OK: 120

± 20 

Q: Is the check result normal?

YES : 

<All the measurement results are within the 

normal value> Follow diagnostic item 20 
"Diagnose CAN bus lines thoroughly." Refer 
to 

P.54D-526

.

NO : 

<The resistance between terminal Nos. 3 
and 6 measures less than 120 

± 20 Ω> 

Repair the wiring harness between the joint 
connector (CAN1) and the intermediate 
connector.

STEP 37. Connector check: A-04 ASC-ECU 
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 38.

NO : 

Repair the defective connector.

AC204740

AC204740

AC204740

AC204740

AC204740

AC204740

AC204740DK

Harness side: A-07

Test
harness

Test
harness

AC310398

AJ

Connector: A-04 <RHD>

A-04

Harness side

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-401

STEP 38. 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 joint connector (CAN1) and the 

ASC-ECU 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 Nos. 2 and 5

OK: More than 2 

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 39.

NO : 

<2 

Ω or less> Repair the wiring harness 

between joint connector (CAN1) and the 
ASC-ECU connector.

AC302572AD

Connector: A-07

Harness side

AC310398

AJ

Connector: A-04 <RHD>

A-04

Harness side

AC204740

AC204740

AC204740

AC204740

AC204740

AC204740

AC204740DL

Harness side: A-07

Test
harness

Test
harness

 

 

 

 

 

 

 

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