Mitsubishi Grandis. Manual - part 571

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-382

terminal Nos. 5 and 16

OK: 1 k

Ω or more

(7) Resistance between C-09 joint connector (CAN2) 

terminal Nos. 9 and 20

OK: 1 k

Ω or more

(8) Resistance between C-09 joint connector (CAN2) 

terminal Nos. 4 and 15

OK: 1 k

Ω or more

(9) Resistance between C-09 joint connector (CAN2) 

terminal Nos. 3 and 14

OK: 1 k

Ω or more

(10)Resistance between C-09 joint connector 

AC204740DP

Harness side: C-09

Test
harness

Test
harness

AC204740DQ

Harness side: C-09

Test
harness

Test
harness

AC204740DF

Harness side: C-09

Test
harness

Test
harness

AC204740DD

Harness side: C-09

Test
harness

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-383

(CAN2) terminal Nos. 7 and 18

OK: 1 k

Ω or more

Q: Are the check result normal?

YES <all of the measurement results are within the 
normal value> : 

Go to Step 28.

NO <The resistance between terminal Nos. 6 and 
17 is less than 120

±20 Ω> : 

Go to Step 5.

NO <The resistance between terminal Nos. 8 and 
19 is less than 1 k

Ω> : 

Go to Step 8.

NO <The resistance between terminal Nos. 5 and 
16 is less than 1 k

Ω> : 

Go to Step 11.

NO <The resistance between terminal Nos. 9 and 
20 is less than 1 k

Ω> : 

Go to Step 14.

NO <The resistance between terminal Nos. 4 and 
15 is less than 1 k

Ω> : 

Go to Step 20.

NO <The resistance between terminal Nos. 3 and 
14 is less than 1 k

Ω> : 

Go to Step 23.

NO <The resistance between terminal Nos. 7 and 
18 is less than 1 k

Ω> : 

Go to Step 26.

STEP 5. Connector check: C-02 combination 
meter 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 6.

NO : 

Repair the defective connector.

STEP 6. Resistance 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 

combination meter 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 

AC310631AX

Connector: C-02 <RHD>

Harness side

C-02

AC310631AX

Connector: C-02 <RHD>

Harness side

C-02

AC310628AY

Connector: C-09 <RHD>

C-09 (GR)

Harness side

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-384

disconnected.

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

terminal Nos. 6 and 17

OK: More than 2 

Ω

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 7.

NO : 

<2 

Ω or less> Repair the wiring harness 

between joint connector (CAN2) and the 
combination meter connector.

STEP 7. Resistance measurement at C-02 
combination meter connector.

CAUTION

A digital multimeter should be used. For details 
refer to 

P.54D-8

.

(1) Remove the combination meter, and measure at 

the equipment side.

(2) Resistance between C-02 combination meter 

connector terminal Nos. 23 and 24

OK: 120

± 20 Ω

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 

combination meter.

STEP 8. 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 9.

NO : 

Repair the defective connector.

AC204740DI

Harness side: C-09

Test
harness

Test
harness

AC310631AX

Connector: C-02 <RHD>

Harness side

C-02

AC204740

AC204740

AC204740

AC204740DS

Equipment side: C-02

Test
harness

AC310631AB

Connectors: C-106 <RHD>

Harness side

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-385

STEP 9. Resistance 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) 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 Nos. 8 and 19

OK: More than 2 

Ω

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 10.

NO : 

<2 

Ω or less> Repair the wiring harness 

between joint connector (CAN2) and the 
A/C-ECU connector.

STEP 10. Resistance measurement at C-106 
A/C-ECU connector.

CAUTION

A digital multimeter should be used. For details 
refer to 

P.54D-8

.

(1) Remove the A/C-ECU, and measure at the 

AC310628AY

Connector: C-09 <RHD>

C-09 (GR)

Harness side

AC310631AB

Connectors: C-106 <RHD>

Harness side

AC204740DO

Harness side: C-09

Test
harness

Test
harness

AC310631AB

Connectors: C-106 <RHD>

Harness side