Mitsubishi L200. Manual — part 789

ETACS

CHASSIS ELECTRICAL

54A-523

• Malfunction of the ETACS-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code.
When the ignition switch is turned to the "LOCK"
(OFF) position, check that the ETACS-ECU does not
set the diagnosis code.

Q: Is the diagnosis code set?

YES :

Refer to diagnosis code chart

P.54A-494

.

NO :

Go to Step 2.

STEP 2. Connector check: C-302 column switch
connector

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Repair the defective connector.

STEP 3. Resistance measurement at the C-302
column switch connector.

(1) Disconnect the connector, and measure at the

wiring harness side.

(2) Check the resistance between C-302 column

switch connector terminal No.4 and body earth.

OK: Continuity exists (2

Ω or less)

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Go to Step 4.

AC903858 AJ

Harness side

Connector: C-302 <LHD>

AC903869AJ

Harness side

Connector: C-302 <RHD>

AC903858 AJ

Harness side

Connector: C-302 <LHD>

AC903869AJ

Harness side

Connector: C-302 <RHD>

AC310507

Connector C-302
(Harness side)

MA

ETACS

CHASSIS ELECTRICAL

54A-524

STEP 4. Check the wiring harness from C-302
column switch connector terminal No.4 to body
earth.

• Check the earth wires for open circuit.

Q: Is the check result normal?

YES :

The trouble can be an intermittent

malfunction (Refer to GROUP 00

− How to

use Troubleshooting/inspection Service
Points

− How to Cope with Intermittent

Malfunction ).

NO :

Repair the wiring harness.

STEP 5. Voltage measurement at C-302 column
switch connector.

(1) Disconnect the connector, and measure at the

wiring harness side.

(2) Voltage between C-302 column switch connector

No.1 and body earth.

OK: System voltage

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Go to Step 6.

AC903858 AJ

Harness side

Connector: C-302 <LHD>

AC903869AJ

Harness side

Connector: C-302 <RHD>

AC903858 AJ

Harness side

Connector: C-302 <LHD>

AC903869AJ

Harness side

Connector: C-302 <RHD>

AC310507

Connector C-302
(Harness side)

MA

ETACS

CHASSIS ELECTRICAL

54A-525

STEP 6. Check the wiring harness between C-302
column switch connector terminal No.1 and
fusible link (20).

NOTE:

Prior to the wiring harness inspection, check junction
block connectors C-209, C-213 and joint connector
C-132, and repair if necessary.

• Check the power supply line for open circuit and

short circuit.

Q: Is the check result normal?

AC503086

AD

Battery

Front of vehicle

24

23

22

21

20

19

Fusible link (20)

AC903858 AJ

Harness side

Connector: C-302 <LHD>

AC903869AJ

Harness side

Connector: C-302 <RHD>

AC903853

Connector: C-132 <LHD>

AC

C-132 (GR)

AC903865

Connector: C-132 <RHD>

AB

C-132 (GR)

AC509934

Connectors: C-209, C-213 <LHD>

Junction block (Front view)

C-213

C-209

C-213

C-209

AC

Harness side

Harness side

AC509936

Connectors: C-209, C-213 <RHD>

C-213

C-209

AC

Junction block
(Front view)

C-213

C-209

Harness side Harness side

ETACS

CHASSIS ELECTRICAL

54A-526

YES :

The trouble can be an intermittent

malfunction (Refer to GROUP 00

− How to

use Troubleshooting/inspection Service
Points

− How to Cope with Intermittent

Malfunction ).

NO :

Repair the wiring harness.

STEP 7. Voltage measurement at C-302 column
switch connector.

(1) Disconnect the connector, and measure at the

wiring harness side.

(2) Turn the ignition switch to the "ON" position.

(3) Voltage between C-302 column switch connector

No.9 and body earth.

OK: System voltage

Q: Is the check result normal?

YES :

Go to Step 9.

NO :

Go to Step 8.

AC903858 AJ

Harness side

Connector: C-302 <LHD>

AC903869AJ

Harness side

Connector: C-302 <RHD>

AC310507

Connector C-302
(Harness side)

MB