Mitsubishi Grandis. Manual - part 500

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-98

terminal No.7 and body earth

OK: Less than 1.0 V

(4) Disconnect the negative battery terminal.

CAUTION

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

P.54D-8

.

Q: Is the check result normal?

YES : 

<less than 1.0 V> Follow diagnostic item 18 

"Diagnose CAN bus lines thoroughly." Refer 
to 

P.54D-476

.

NO : 

<1.0 V or more> Repair the wiring harness 
between joint connector (CAN2) and the 
combination meter connector.

STEP 35. Connector check: C-106 A/C-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 36 .

NO : 

Repair the defective connector.

STEP 36. Voltage measurement at C-09 joint 
connector (CAN2).

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 

A/C-ECU connector, and measure at the wiring 
harness side.

(2) Connect the negative battery terminal, and turn 

the ignition switch to the ON position.

(3) Voltage between C-09 joint connector (CAN2) 

AC310613

AB

Connector: C-106 <LHD>

Harness side

AC310615

AU

Harness side

Connector: C-09 <LHD>

C-09 (GR)

AC310613

AB

Connector: C-106 <LHD>

Harness side

AC209365KH

Harness side: C-09

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-99

terminal No.2 and body earth

OK: Less than 1.0 V

(4) Disconnect the negative battery terminal.

CAUTION

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

P.54D-8

.

Q: Is the check result normal?

YES : 

<less than 1.0 V> Follow diagnostic item 18 

"Diagnose CAN bus lines thoroughly." Refer 
to 

P.54D-476

.

NO : 

<1.0 V or more> Repair the wiring harness 
between the joint connector (CAN2) and the 
A/C-ECU connector.

STEP 37. Connector check: C-221 ETACS-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.

STEP 38. Voltage measurement at C-09 joint 
connector (CAN2).

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 

ETACS-ECU connector, and measure at the 
wiring harness side.

(2) Connect the negative battery terminal, and turn 

the ignition switch to the ON position.

(3) Voltage between C-09 joint connector (CAN2) 

AC310626

Connector: C-221

Junction block (Rear view)

<LHD>

AC

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

Harness side

C-221(GR)

AC310615

AU

Harness side

Connector: C-09 <LHD>

C-09 (GR)

AC310626

Connector: C-221

Junction block (Rear view)

<LHD>

AC

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

Harness side

C-221(GR)

AC209365KI

Harness side: C-09

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-100

terminal No.3 and body earth

OK: Less than 1.0 V

(4) Disconnect the negative battery terminal.

CAUTION

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

P.54D-8

.

Q: Is the check result normal?

YES : 

<less than 1.0 V> Follow diagnostic item 18 

"Diagnose CAN bus lines thoroughly." Refer 
to 

P.54D-476

.

NO : 

<1.0 V or more> Repair the wiring harness 
between the joint connector (CAN2) and the 
ETACS-ECU connector.

STEP 39. Connector check: C-37 jumper 
connector

CAUTION

The strand end of the twist wire should be within 
10 cm from the connector. For details refer to 

P.54D-8

.

Check that the wiring harness of the jumper 
connector is not damaged.

Q: Is the check result normal?

YES : 

Go to Step 40 .

NO : 

Repair the defective connector.

STEP 40. Voltage measurement at the C-09 joint 
connector (CAN2).

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 

jumper connector, and measure at the wiring 
harness side.

(2) Connect the negative battery terminal, and turn 

the ignition switch to the ON position.

(3) Voltage between C-09 joint connector (CAN2) 

terminal No.5 and body earth

OK: Less than 1.0 V

(4) Disconnect the negative battery terminal.

Q: Is the check result normal?

AC310615

AV

Connector: C-37 <LHD>

AC310615

AU

Harness side

Connector: C-09 <LHD>

C-09 (GR)

AC310615

AV

Connector: C-37 <LHD>

AC209365KJ

Harness side: C-09

Test harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-101

YES : 

<1.0 V or less> Go to Step 41.

NO : 

<more than 1.0 V> Repair the wiring 
harness between the joint connector 
(CAN2) and the jumper connector.

STEP 41. Connector check: C-07 centre display 
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 42 .

NO : 

Repair the defective connector.

STEP 42. Voltage measurement at the C-37 
jumper 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 centre display connector and the 

jumper connector, and measure at the jumper 
connector (at the centre display side).

(2) Connect the negative battery terminal, and turn 

the ignition switch to the ON position.

(3) Voltage between C-37 jumper connector terminal 

AC310613

BC

Connector: C-07 <LHD>

Harness side

C-07 (B)

AC310613

BC

Connector: C-07 <LHD>

Harness side

C-07 (B)

AC310615

AV

Connector: C-37 <LHD>

AC312551 AC

Harness side: C-37

Test 
harness