Mitsubishi L200. Manual - part 712

HAZARD WARNING LAMP SWITCH

CHASSIS ELECTRICAL

54A-215

SYMPTOM PROCEDURES

Inspection Procedure 1: The hazard warning lamps do not illuminate.

CAUTION

Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM
If the hazard warning lamps do not illuminate, the 
hazard warning lamp input signal circuit or the 
ETACS-ECU may be defective.

PROBABLE CAUSES

• Malfunction of the hazard warning lamp switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Check that the turn-signal lamps 
operate.
Check that the turn-signal lamps illuminate normally.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Refer to inspection procedure 11 "None of 
the turn-signal lamps illuminate 

P.54A-137

."

STEP 2. M.U.T.-III diagnosis code.
When the electric motor 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?

Hazard Warning Lamp Circuit

ETACS-ECU

HAZARD
WARNING
LAMP SWITCH

TURN-SIGNAL
LAMP RELAY: LH

TURN-SIGNAL
LAMP RELAY: RH

INPUT SIGNAL

· FRONT TURN-SIGNAL
  LAMP (LH)
· REAR TURN-SIGNAL 
  LAMP (LH)
· SIDE TURN-SIGNAL
  LAMP (LH)
· COMBINATION METER

· FRONT TURN-SIGNAL
  LAMP (RH)
· REAR TURN-SIGNAL
  LAMP (RH)
· SIDE TURN-SIGNAL
  LAMP (RH)
· COMBINATION METER

RELAY
BOX

FUSIBLE
LINK

23

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

J/B SIDE

HAZARD WARNING LAMP SWITCH

CHASSIS ELECTRICAL

54A-216

YES : 

Refer to diagnosis code chart 

P.54A-494

.

NO : 

Go to Step 3.

STEP 3. Check the power supply circuit.
When the electric motor switch is at the "LOCK" 
(OFF) position, check that the functions below work 
normally.

• Lamp reminder function

• Central door locking system

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Refer to inspection procedure A-1 "Check 
the battery power supply circuit to the 
ETACS-ECU 

P.54A-512

."

STEP 4. M.U.T.-III data list
Check the input signal from the hazard warning lamp 
switch.

• Operate the hazard warning lamp switch.

OK: Normal condition is displayed.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Refer to inspection procedure 8 "The hazard 
warning lamp switch signal is not received 

P.54A-536

."

STEP 5. Retest the system.
Check that the hazard warning lamps illuminate.

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

).

REMOVAL AND INSTALLATION

M1541501000035

Item 
No.

Item name

Normal condition

26

Hazard warning lamp 
switch

OFF to ON (only 
when switch is 
operated)

AC509437AB

1

2

3

HORN

CHASSIS ELECTRICAL

54A-217

INSPECTION

HAZARD WARNING LAMP SWITCH 
CHECK

M1541501100032

HORN

REMOVAL AND INSTALLATION

M1542100200871

Removal steps 

•

Centre upper box hood or RV meter 
hood, lower panel assembly and 
centre lower panel assembly (Refer 
to GROUP 52A, Instrument Panel 
Assembly ).

1.

Centre upper panel assembly 
(Refer to GROUP 52A, Instrument 
Panel Assembly ).

2.

Instrument panel switch holder

3.

Hazard warning lamp switch

Switch position

Tester 
connection

Specified 
condition

Released

1 

− 2

Open circuit

Pressed

1 

− 2

Continuity 
(Less than 2 
ohms)

AC503635

3 4

1 2

AB

AC900914 AB

1

2

21 ± 4 N·m

ACCESSORY SOCKET

CHASSIS ELECTRICAL

54A-218

INSTALLATION SERVICE POINT

>>A<< HORN (LO)/HORN (HI) INSTALLATION

Use the earth bolts as the mounting bolts for horn 
(LO) and horn (HI). The earth bolts have "E" mark on 
the bolt heads.

INSPECTION

HORN RELAY CONTINUITY CHECK

M1542100400552

ACCESSORY SOCKET

REMOVAL AND INSTALLATION

M1542300200499

Refer to GROUP 52A, Rear floor console assembly .

Removal Steps 

•

Radiator grille (Refer to 
GROUP 51, Radiator grille 
.)

>>

A

<<

1. Horn <LO>

>>

A

<<

2. Horn <HI>

AC805322

Battery voltage

Tester 
connection

Specified 
condition

Not applied

3 

− 4

Open circuit

• Connect terminal 2 

to the positive 
battery terminal

• Connect terminal 1 

to the negative 
battery terminal

Continuity 
(2 

Ω or less)

AC502554

AH

4

2

3

1

Horn relay

4

1

2

3