Mitsubishi Outlander (2003+). Manual - part 481

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-213

INSPECTION PROCEDURE J-3: The high-beam headlamps 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 the high-beam headlamps do not illuminate, the 
dimmer switch input circuit or the front-ECU may be 
defective.

POSSIBLE CAUSES

•

Malfunction of the column switch

•

Malfunction of the front-ECU

•

Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE

Step 1. Check that the headlamps operate.

Check that the low-beam headlamps illuminate and 
extinguish normally.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Refer to inspection procedure J-2 "The 
low-beam headlamps do not illuminate 
normally 

P.54B-210

."

Step 2. Pulse check

Check the input signal from the dimmer switch.

OK: The MUT-II/III sounds or the voltmeter 
needle fluctuates.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Refer to inspection procedure N-5 "The 
column switch (lighting and turn-signal lamp 
switch) signal is not received 

P.54B-319

."

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

BATTERY

FRONT-ECU

HEADLAMP
RELAY: HI

RELAY
BOX

INPUT SIGNAL

· HEADLAMP AUTOMATIC 
  SHUTDOWN
· HEADLAMP SWITCH

· COMBINATION METER
· HEADLAMP (LH)

HEADLAMP (RH)

Headlamp Relay (High-Beam) Circuit

System switch

Check condition

Dimmer switch

When the dimmer switch 
is turned from off to on

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-214

Step 3. Retest the system.

Check that the high-beam headlamps illuminate 
normally.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

−

 How to 

Cope with Intermittent Malfunction 

P.00-6

).

NO : 

Replace the front-ECU.

INSPECTION PROCEDURE J-4: The high-beam and low-beam headlamps do not illuminate when the 
passing switch is operated.

CAUTION

Whenever the ECU is replaced, ensure that the 
input and output signal circuits are normal.
COMMENTS ON TROUBLE SYMPTOM
If the low-beam and high-beam headlamps are 
normal, the passing switch input signal circuit or the 
front-ECU may be defective.

POSSIBLE CAUSES

•

Malfunction of the column switch

•

Malfunction of the front-ECU

•

Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE

Step 1. Check that the headlamps operate.

Check that the low-beam and high-beam headlamps 
work normally.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair the headlamps. Refer to trouble 
symptom chart 

P.54B-41

.

Step 2. Pulse check

Check the input signal from the passing switch.

OK: The MUT-II/III sounds or the voltmeter 
needle fluctuates.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Refer to inspection procedure N-5 "The 
column switch (lighting and turn-signal lamp 
switch) signal is not received 

P.54B-319

."

Step 3. Retest the system.

When the passing switch is turned on, check if the 
headlamps illuminate normally.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

−

 How to 

Cope with Intermittent Malfunction 

P.00-6

).

NO : 

Replace the front-ECU.

System switch

Check condition

Passing lamp switch

When the passing switch 
is turned from off to on

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-215

INSPECTION PROCEDURE J-5: The headlamp automatic-shutdown function does not work normally.

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM
The ETACS-ECU operates this function in 
accordance with the input signals below.

•

Ignition switch (IG1)

•

Driver's door switch

•

Tail lamp switch

•

Headlamp switch

If this function does not work normally, these input 
signal circuit(s), the front-ECU or the ETACS-ECU 
may be defective. Note that this function can be 
disabled/enabled by the adjustment function (default 
setting; enabled).

POSSIBLE CAUSES

•

Malfunction of the driver's door switch

•

Malfunction of the front-ECU

•

Malfunction of the column switch

•

Malfunction of the ETACS-ECU

•

Damaged harness wires and connectors

ETACS-ECU

INPUT SIGNAL

· DRIVER'S DOOR SWITCH

· TAIL LAMP SWITCH

· IGNITION SWITCH (IG1)

· HEADLAMP SWITCH

Headlamp Automatic Shutdown Function

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-216

DIAGNOSTIC PROCEDURE

Step 1. Check the adjustment function.

Check that the headlamp automatic-shutdown 
function has been enabled by using the adjustment 
function.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Enable the headlamp automatic-shutdown 
function by using the adjustment function. 
Refer to 

P.54B-393

.

Step 2. Check that the headlamps operate.

Check that the low-beam and high-beam headlamps 
work normally.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair the headlamps. Refer to trouble 
symptom chart 

P.54B-41

.

Step 3. Pulse check

Check the input signals below, which are related to 
the headlamp automatic-shutdown function.

OK: The MUT-II/III sounds or the voltmeter 
needle fluctuates.

Q: Is the check result normal?

All the signals are received normally. : 

Go to Step 

4.

The ignition switch (IG1) signal is not received. : 

Refer to inspection procedure N-2 "The 
ignition switch (IG1) signal is not received 

P.54B-301

."

The driver's door switch signal is not received. : 

Refer to inspection procedure N-4 "The front 
door switch signal is not received <L.H. 
drive vehicles>

P.54B-315

 or <R.H. drive 

vehicles>

P.54B-317

."

The tail lamp switch signal is not received. : 

Refer 

to inspection procedure N-5 "The column 
switch (lighting and turn-signal lamp switch) 
signal is not received 

P.54B-319

."

Step 4. Retest the system.

Replace the ETACS-ECU, and then check that the 
headlamp automatic-shutdown function works 
normally.
(1) Replace the ETACS-ECU.
(2) Check that the headlamp automatic-shutdown 

function works normally.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

−

 How to 

Cope with Intermittent Malfunction 

P.00-6

).

NO : 

Replace the front-ECU.

System switch

Check condition

Ignition switch (IG1)

When turned from ACC 
to ON

Driver's door switch

When the driver's door is 
opened

Tail lamp switch

When the lighting switch 
is turned to the TAIL 
position