Mitsubishi Grandis. Manual — part 565

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-358

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. 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 25.

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. 7 and
18 is less than 1 k

Ω> :

Go to Step 23.

AC204740DP

Harness side: C-09

Test
harness

Test
harness

AC204740DQ

Harness side: C-09

Test
harness

Test
harness

AC204740DD

Harness side: C-09

Test
harness

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-359

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

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.

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

AC204740DI

Harness side: C-09

Test
harness

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-360

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

19, Diagnose CAN bus lines thoroughly.
Refer to

P.54D-502

.

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.

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

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

AC310628AY

Connector: C-09 <RHD>

C-09 (GR)

Harness side

AC310631AB

Connectors: C-106 <RHD>

Harness side

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-361

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

equipment side.

(2) Resistance between C-106 A/C-ECU connector

terminal Nos. 8 and 9

OK: 1 k

Ω or more

Q: Is the check result normal?

YES :

<1 k

Ω or more> Follow diagnostic item 19,

Diagnose CAN bus lines thoroughly. Refer
to

P.54D-502

.

NO :

<Less than 1 k

Ω> Replace the A/C-ECU.

AC204740DO

Harness side: C-09

Test
harness

Test
harness

AC310631AB

Connectors: C-106 <RHD>

Harness side

AC204740

AC204740

AC204740

AC204740

AC204740

AC204740

AC204740

AC204740DT

Equipment side: C-106

Test
harness