Mitsubishi Grandis. Manual - part 603

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-510

YES : 

<MUT-III indications correspond to the 

illustration> Go to Step 13 .

NO : 

<MUT-III indications do not correspond to 
the illustration> Go to Step 14 .

STEP 13. Resistance measurement at C-09 joint 
connector (CAN2) and C-221 ETACS-ECU 
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 (CAN2) and the 

ETACS-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 C-09 joint connector (CAN2) 

terminal No.5 and C-221 ETACS-ECU connector 
terminal No.72

OK: 2 

Ω or less

(5) Continuity between C-09 joint connector (CAN2) 

terminal No.16 and C-221 ETACS-ECU 

AC310628AY

Connector: C-09 <RHD>

C-09 (GR)

Harness side

AC310620

Connector: C-221

Junction block 
(Rear view)

<RHD>

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)

AC312553 BF

Harness side: C-09

Test
harness

Harness side: C-221

Test
harness

AC312553

Harness side: C-09

Harness side: C-221

Test
harness

BH

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-511

connector terminal No.73

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 resistances measure 2 

Ω or less> 

Power supply to the ETACS-ECU may be 
suspected. Diagnose the SWS. Refer to 

P.54B-87

.

NO : 

<Either or all of the resistances measure 
more than 2 

Ω> Repair the wiring harness 

between the joint connector (CAN2) and the 
ETACS-ECU connector.

STEP 14. 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 15 .

NO : 

Repair the defective connector.

STEP 15. MUT-III CAN bus diagnostics (C-07 
centre display connector disconnected)

(1) Disconnect the centre display connector, and 

diagnose by using the MUT-III.

(2) Check that the MUT-III indications correspond to 

the illustration.

Q: Is the check result normal?

YES : 

<MUT-III indications correspond to the 

illustration> Go to Step 16 .

NO : 

<MUT-III indications do not correspond to 
the illustration> Go to Step 27 .

STEP 16. 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 17 .

NO : 

Repair the defective connector.

AC310631AY

Connector: C-07 <RHD>

Harness side

C-07 (B)

AC310631AY

Connector: C-07 <RHD>

Harness side

C-07 (B)

AC309836

MUT

J/C (2)

METER

ETAC S

J/C (1)

ABS-ECU

ENG/AT-ECU

A/C -ECU

C. DISPL AY

SRS-ECU

AN

 : Red section 

   on screen

AC310628AZ

Connector: C-37 <RHD>

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-512

STEP 17. Resistance measurement at C-37 
jumper connector and 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) 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 C-37 jumper connector 

terminal No.2 and C-09 joint connector (CAN2) 
terminal No.20

OK: 2 

Ω or less

(5) Continuity between C-37 jumper connector 

terminal No.5 and C-09 joint connector (CAN2) 

AC310628AY

Connector: C-09 <RHD>

C-09 (GR)

Harness side

AC310628AZ

Connector: C-37 <RHD>

AC312553BK

Harness side: C-09

Test
harness

Test
harness

Harness side: C-37

AC312553 BL

Test
harness

Harness side: C-37

Harness side: C-09

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-513

terminal No.9

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 18  .

NO : 

<Either or all of the resistances measure 
more than 2 

Ω> Repair the wiring harness 

between joint connector (CAN2) and the 
jumper connector.

STEP 18. Resistance measurement at C-37 
jumper connector and C-07 centre display 
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 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 C-37 jumper connector 

terminal No.4 and C-07 centre display connector 

AC310631AY

Connector: C-07 <RHD>

Harness side

C-07 (B)

AC310628AZ

Connector: C-37 <RHD>

AC312553

Test
harness

Harness side: C-07

Test
harness

Harness side: C-37

BM