Mitsubishi L200. Manual — part 696

FRONT FOG LAMP

CHASSIS ELECTRICAL

54A-151

Tool

Number

Name

Use

MB991955

a. MB991824
b. MB991827
c. MB991910
d. MB991911
e. MB991825
f. MB991826

M.U.T.-III sub-
assembly

a. Vehicle

Communication
Interface (V.C.I.)

b. M.U.T.-III USB

cable

c. M.U.T.-III main

harness A
(Vehicles with CAN
communication
system)

d. M.U.T.-III main

harness B
(Vehicles without
CAN
communication
system)

e. M.U.T.-III measure

adapter

f. M.U.T.-III trigger

harness

CAUTION

For vehicles with CAN
communication, use M.U.T.-III
main harness A to send
simulated vehicle speed. If you
connect M.U.T.-III main harness
B instead, the CAN
communication does not
function correctly.
Checking ETACS-ECU (service
data and diagnosis codes)

MB991223

a. MB991219
b. MB991220
c. MB991221
d. MB991222

Harness set

a. Check harness
b. LED harness
c. LED harness

adapter

d. Probe

Continuity check and voltage
measurement at harness wire or
connector

a. For checking connector pin

contact pressure

b. For checking power supply

circuit

c. For checking power supply

circuit

d. For connecting a locally

sourced tester

MB991910

MB991826

MB991955

MB991911

MB991824

MB991827

MB991825

a

b

c

d

e

f

DO NOT USE

MB991223

a

d

c

b

DO NOT USE

BA

FRONT FOG LAMP

CHASSIS ELECTRICAL

54A-152

TROUBLESHOOTING

DIAGNOSIS TROUBLESHOOTING FLOW

M1540401700023

Refer to GROUP 00

− Contents of Troubleshooting .

TROUBLE SYMPTOM CHART

M1540401000314

MB992006

Extra fine probe

Continuity check and voltage
measurement at harness wire or
connector

Tool

Number

Name

Use

MB992006

Symptom

Inspection
procedure
number

Reference
page

Front fog lamp

The front fog lamps do not illuminate normally

1

P.54A-153

One of the front fog lamps does not illuminate normally.

2

P.54A-157

FRONT FOG LAMP

CHASSIS ELECTRICAL

54A-153

SYMPTOM PROCEDURES

Inspection Procedure 1: The front fog lamps do not illuminate normally.

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM
If none of the front fog lamps illuminate, the input sig-
nal circuit(s) below or the ETACS-ECU may be
defective.

• Tail lamp switch

• Headlamp switch

• Front fog lamp switch

PROBABLE CAUSES

• Malfunction of the column switch

• Malfunction of the front fog lamp relay

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

23

Front Fog Lamp Relay Circuit

RELAY
BOX

FRONT
FOG LAMP
RELAY

·FRONT FOG LAMP
·COMBINATION METER

FUSIBLE
LINK

ETACS-ECU

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 SI : Silver

FRONT FOG LAMP

CHASSIS ELECTRICAL

54A-154

DIAGNOSIS PROCEDURE

STEP 1. Check that the tail/stop lamps and
headlamps operate.
Check that the tail/stop lamps and headlamps illumi-
nate normally.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Repair the tail/stop lamp(s) and
headlamp(s). Refer to trouble symptom
chart

P.54A-109

.

STEP 2. 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 3.

STEP 3. M.U.T.-III data list
Check the input signals below, which are related to
the front fog lamp.

• Turn the ignition switch to the "LOCK" (OFF)

position.

• Turn the tail lamp switch to the ON position.

• Turn the front fog lamp switch to the ON position.

OK: Normal conditions are displayed for all
the items

Q: Are the check result normal?

YES <All the signals are received normally.> :

Go

to Step 4.

NO <The ignition switch (IG1) signal is not
received.> :

Refer to inspection procedure C-3

"The ignition switch (IG1) signal is not
received

P.54A-533

."

NO <The front fog lamp switch signal is not
received.> :

Refer to inspection procedure C-1

"The column switch (lighting and wiper
switch) signal is not received

P.54A-523

."

STEP 4. Connector check: A-13X front fog lamp
relay connector

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Repair the defective connector.

STEP 5. Check the front fog lamp relay.
Refer to

P.54A-163

.

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Replace the front fog lamp relay.

STEP 6. Voltage measurement at the A-13X front
fog lamp relay connector.

(1) Remove the front fog lamp relay, and measure at

the relay box side.

(2) Check the voltage between the front fog lamp

Item
No.

Item name

Normal condition

30

Ignition switch(IG1)

OFF

70

Front fog lamp

ON

AC903878

AE

Connector: A-13X

Relay box side

AC903878

AE

Connector: A-13X

Relay box side

AC310507 LT

Connector A-13X
(Relay box side)