Mitsubishi L200. Manual — part 832

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54C-87

PROBABLE CAUSES

• Damaged harness wires and connectors

• Power supply circuit malfunction of the ETACS-

ECU

• Malfunction of the ETACS-ECU

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54C-88

DIAGNOSIS PROCEDURE

STEP 1. Connector check: C-119 joint connector
(CAN1) and C-219 ETACS-ECU connector

AC903853

BM

Connector: C-119 <LHD>

C-119 (GR)

AC903868

CM

Connector: C-119 <RHD>

C-119 (GR)

AC509934

Connector: C-219 <LHD>

AD

C-219 (GR)

Harness side

Junction block

AC509943

Connector: C-219 <RHD>

AB

C-219 (GR)

Harness side

Junction block
(Rear view)

CAUTION

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

P.54C-7

.

AC209350

1

12

2

13

3

14

4

15

5

16

6

17

7

18

8

19

9

20

10

21

11

22

AC209350

1

12

2

13

3

14

4

15

5

16

6

17

7

18

8

19

9

20

10

21

11

22

AC

Short pin

When checking the joint connector, ensure that its
wiring harness side and its short pins are not dam-
aged.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Repair the defective connector. Replace the
joint connector as necessary.

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54C-89

STEP 2. Resistance measurement at C-119 joint
connector (CAN1) and C-219 ETACS-ECU
connector.

CAUTION

A digital multimeter should be used. For details
refer to

P.54C-7

.

CAUTION

The test wiring harness should be used. For
details refer to

P.54C-7

.

AC903853

BM

Connector: C-119 <LHD>

C-119 (GR)

AC903868

CM

Connector: C-119 <RHD>

C-119 (GR)

AC509934

Connector: C-219 <LHD>

AD

C-219 (GR)

Harness side

Junction block

AC509943

Connector: C-219 <RHD>

AB

C-219 (GR)

Harness side

Junction block
(Rear view)

(1) Disconnect the joint connector (CAN1) and the

ETACS-ECU connector, and measure at the
wiring harness side.

(2) Turn the ignition switch to the LOCK (OFF)

position.

CAUTION

When measuring the resistance, disconnect the
negative battery terminal. For details refer to

P.54C-7

.

(3) Ensure that the negative battery terminal is

disconnected.

AC204740

AC204740

AC204740

AC204740

Harness side: C-219

Harness side: C-119

HN

Test harness

Test
harness

(4) Continuity between C-119 joint connector (CAN1)

terminal No.9 and C-219 ETACS-ECU connector

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54C-90

terminal No.56

OK: Continuity (2

Ω or less)

AC204740

AC204740

AC204740

AC204740

Harness side: C-219

Harness side: C-119

HO

Test
harness

(5) Continuity between C-119 joint connector (CAN1)

terminal No.20 and C-219 ETACS-ECU
connector terminal No.65

OK: Continuity (2

Ω or less)

CAUTION

Strictly observe the specified wiring harness
repair procedure. For details refer to

P.54C-7

.

Q: Is the check result normal?

YES :

<All the resistances measure 2

Ω or less>

Go to Step 3 .

NO :

<Either or all of the resistances measure
more than 2

Ω> Repair the wiring harness

between joint connector (CAN1) and the
ETACS-ECU connector.

STEP 3. Resistance measurement at C-219
ETACS-ECU connector.

CAUTION

A digital multimeter should be used. For details
refer to

P.54C-7

.

AC509934

Connector: C-219 <LHD>

AD

C-219 (GR)

Harness side

Junction block

AC509943

Connector: C-219 <RHD>

AB

C-219 (GR)

Harness side

Junction block
(Rear view)

(1) Remove the ETACS-ECU, and measure at the

equipment side.

AC204738

AC204738

AC204738HL

Equipment side: C-219

Test
harness

Test
harness

(2) Resistance at C-219 ETACS-ECU connector

terminal Nos.56 and 65

OK: 120

± 20 Ω

Q: Is the check result normal?

YES :

<Within 120

± 20 Ω> Power supply to the

ETACS-ECU may be suspected. Refer to .

NO :

<Not within 120

± 20 Ω> Replace the

ETACS-ECU.