Mitsubishi L200. Manual - part 792

ETACS

CHASSIS ELECTRICAL

54A-535

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 : 

Replace the ETACS-ECU and register the 
ID codes (Refer to 

P.54A-39

).

Inspection Procedure C-4: The hazard warning lamp switch signal is not received.

CAUTION

Whenever the ECU is replaced, ensure that the input signal circuit is normal.

COMMENTS ON TROUBLE SYMPTOM
Input signal from the hazard warning lamp switch is 
used to operate the functions below. If the signal is 
abnormal, these functions will not work normally.

• Keyless entry system (encrypted code registra-

tion)

• Hazard warning lamp

PROBABLE CAUSES

• Malfunction of the hazard warning lamp switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

ETACS-
ECU

HAZARD
WARNING
LAMP SWITCH

Hazard Warning Lamp Switch Input Circuit

Wire colour code
B : Black     LG : Light green     G : Green     L : Blue     W : White     Y : Yellow     SB : Sky blue
BR : Brown     O : Orange     GR : Grey     R : Red     P : Pink     V : Violet     PU : Purple

ETACS

CHASSIS ELECTRICAL

54A-536

DIAGNOSIS PROCEDURE

STEP 1. Connector check: C-07 hazard warning 
lamp switch connector

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair the defective connector.

STEP 2. Check the hazard warning lamp switch.
Refer to 

P.54A-217

.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Replace the hazard warning lamp switch.

STEP 3. Resistance measurement at the C-07 
hazard warning lamp switch connector.

(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Resistance between C-07 hazard warning lamp 

switch connector terminal No.2 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.

AC903856 BD

Connector: C-07 <LHD>

Harness side

AC903868

BU

Connector: C-07 <RHD>

Harness side

AC903856 BD

Connector: C-07 <LHD>

Harness side

AC903868

BU

Connector: C-07 <RHD>

Harness side

AC310506GG

Connector C-07

(Harness side)

ETACS

CHASSIS ELECTRICAL

54A-537

STEP 4. Check the wiring harness between C-07 
hazard warning lamp switch connector terminal 
No.2 and the 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. Connector check: C-219 ETACS-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the defective connector.

AC903856 BD

Connector: C-07 <LHD>

Harness side

AC903868

BU

Connector: C-07 <RHD>

Harness side

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)

ETACS

CHASSIS ELECTRICAL

54A-538

STEP 6. Check the wiring harness between C-219 
ETACS-ECU connector terminal No.71 and C-07 
hazard warning lamp switch connector terminal 
No.1.

• Check the input line for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the wiring harness.

STEP 7. M.U.T.-III data list
Check the input signals from the hazard warning 
lamp switch.

• Operate the hazard warning lamp switch.

OK: Normal condition is displayed.

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 : 

Replace the ETACS-ECU and register the 
ID codes (Refer to 

P.54A-39

).

AC903856 BD

Connector: C-07 <LHD>

Harness side

AC903868

BU

Connector: C-07 <RHD>

Harness side

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)

Item 
No.

Item name

Normal condition

26

Hazard warning lamp 
switch

OFF to ON (only 
when switch is 
operated)