Mitsubishi Grandis. Manual — part 609

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-534

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-535

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)

AC309834

MUT

J/C (2)

METER

ETAC S

J/C (1)

ASC -ECU

ENG/AT-ECU

A/C -ECU

SRS-ECU

STR. A .

SNSR

C. DISPL AY

AP

: Red section

on screen

AC310628AZ

Connector: C-37 <RHD>

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-536

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)

AC302572AD

Connector: A-07

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-537

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