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.