Mitsubishi Grandis. Manual — part 574

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-394

STEP 26. Connector check: C-126 diagnosis
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 27.

NO :

Repair the defective connector.

STEP 27. 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

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. 7 and 18

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 :

<2 more than

Ω> Follow diagnostic item 20,

Diagnose CAN bus lines thoroughly. Refer
to

P.54D-526

.

NO :

<2

Ω or less> Repair the wiring harness

between joint connector (CAN2) and the
diagnosis connector.

AC310631AK

Connector: C-126 <RHD>

C-126 (B)

Harness side
(Front side)

AC310628AY

Connector: C-09 <RHD>

C-09 (GR)

Harness side

AC204740DD

Harness side: C-09

Test
harness

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-395

STEP 28. 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

intermediate 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. 11 and 22

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 :

<2 more than

Ω> Follow diagnostic item 20,

Diagnose CAN bus lines thoroughly. Refer
to

P.54D-526

.

NO :

<2

Ω or less> Repair the wiring harness

between joint connector (CAN2) and the
intermediate connector.

STEP 29. 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 27.

NO :

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

AC310628AY

Connector: C-09 <RHD>

C-09 (GR)

Harness side

AC204740DR

Harness side: C-09

Test
harness

Test
harness

AC302572AD

Connector: A-07

Harness side

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-396

STEP 30. Resistance 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) 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) Resistance between A-07 joint connector (CAN1)

terminal Nos. 3 and 6

OK: 120

± 20 Ω

(5) Resistance between A-07 joint connector (CAN1)

terminal Nos. 2 and 5

OK: 1 k

Ω or more

Q: Are the check result normal?

AC302572AD

Connector: A-07

Harness side

AC204740

AC204740

AC204740

AC204740

AC204740

AC204740

AC204740DK

Harness side: A-07

Test
harness

Test
harness

AC204740

AC204740

AC204740

AC204740

AC204740

AC204740

AC204740DL

Harness side: A-07

Test
harness

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-397

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

Go to Step 40.

NO <The resistance between terminal Nos. 3 and 6
is less than 120

±20 Ω> :

Go to Step 31.

NO <The resistance between terminal Nos. 2 and 5
is less than 1 k

Ω> :

Go to Step 37.

STEP 31. 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 32.

NO :

Repair the defective connector.

STEP 32. Resistance measurement at the A-16
intermediate 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 connector, and measure at its

male-side intermediate connector (at the control
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) Resistance between A-16 intermediate connector

terminal Nos. 6 and 12

OK: 120

± 20 Ω

Q: Is the check result normal?

YES :

<Within 120

± 20 Ω> Go to Step 36 .

NO :

<Not within 120

± 20 Ω> Go to Step 33.

AC310398

AC

Connector: A-16 <RHD>

A-16 (B)

AC310398

AC

Connector: A-16 <RHD>

A-16 (B)

AC204740

AC204740

AC204740

AC204740DM

Male side: A-16

Test
harness

Test
harness