Mitsubishi Grandis. Manual - part 517

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-166

terminal No.4 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 20 

"Diagnose CAN bus lines thoroughly." Refer 
to 

P.54D-526

.

NO : 

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

STEP 45. Connector check: C-306 steering wheel 
angle sensor 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 46 .

NO : 

Repair the defective connector.

STEP 46. 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 

steering wheel angle sensor 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) 

AC310183

AF

Connector: C-306 <RHD>

Harness side

AC310628AY

Connector: C-09 <RHD>

C-09 (GR)

Harness side

AC310183

AF

Connector: C-306 <RHD>

Harness side

AC209365KI

Harness side: C-09

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-167

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 20 

"Diagnose CAN bus lines thoroughly." Refer 
to 

P.54D-526

.

NO : 

<1.0 V or more> Repair the wiring harness 
between the joint connector (CAN2) and the 
steering wheel angle sensor connector.

STEP 47. 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 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.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 20 

"Diagnose CAN bus lines thoroughly." Refer 
to 

P.54D-526

.

NO : 

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

STEP 48. 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 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) 

AC310628AY

Connector: C-09 <RHD>

C-09 (GR)

Harness side

AC209365KF

Harness side: C-09

Test harness

AC310628AY

Connector: C-09 <RHD>

C-09 (GR)

Harness side

AC209365KV

Harness side: C-09

Test harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-168

terminal No.11 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 20 

"Diagnose CAN bus lines thoroughly." Refer 
to 

P.54D-526

.

NO : 

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

STEP 49. Connector check: 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

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

P.54D-8

.

When checking the joint connector, ensure that its 
wiring harness side is not damaged.

Q: Is the check result normal?

YES : 

Go to Step 50 .

NO : 

Repair a defective connector or replace the 
joint connector (front wiring harness 
assembly).

STEP 50. Voltage 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) Connect the negative battery terminal, and turn 

the ignition switch to the ON position.

(3) Voltage between A-07 joint connector (CAN1) 

terminal No.6 and body earth

OK: 4.0 V or less

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

AC302572AD

Connector: A-07

Harness side

AC302572AD

Connector: A-07

Harness side

AC209365KG

Harness side: A-07

Test harness

AC209365KM

Harness side: A-07

Test harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-169

terminal No.5 and body earth

OK: 4.0 V or less

(5) Disconnect the negative battery terminal.

Q: Are the check result normal?

YES <all of the measurement results show 4.0 V or 
less> : 

Go to Step 56 .

NO <The voltage between terminal No.6 and body 
earth is more than 4.0 V> : 

Go to Step 51 .

NO <The voltage between terminal No.5 and body 
earth is more than 4.0 V> : 

Go to Step 54 .

STEP 51. 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 52 .

NO : 

Repair the defective connector.

STEP 52. Voltage 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 

intermediate 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 A-07 joint connector (CAN1) 

terminal No.6 and body earth

OK: 1.0 V or less

(4) Disconnect the negative battery terminal.

AC310398

AC

Connector: A-16 <RHD>

A-16 (B)

AC302572AD

Connector: A-07

Harness side

AC310398

AC

Connector: A-16 <RHD>

A-16 (B)

AC209365KG

Harness side: A-07

Test harness