Mitsubishi Montero (2002-2004). Manual — part 313

SYMPTOM PROCEDURES

TSB Revision

SWS SYMPTOM PROCEDURES

54Bb-299

Headlight automatic-shutdown function
Even if the lighting switch (taillight switch or headlight switch) is
ON, the head light (including the taillights) will automatically go
off in the following conditions to prevent the battery from dis-
charging as a result of forgetting to turn off lights.
When the ignition key is turned from "ON" to "LOCK" (OFF) or
"ACC" position with the lighting switch turned ON, and this
state continues for three minutes, the light will automatically be
turned off. If the driver's door is opened during these three min-
utes, the light will go off one second later.
NOTE: This function can be disabled by the adjustment proce-
dures of SWS function (Refer to

P.54Ba-26

.)

Dimmer automatic reset function
The column switch (column ECU) resets the dimmer switch and
prevents the high beam from lighting up when turning on the
headlight again if the headlight switch is put in the "OFF" posi-
tion while the high beam of the headlight is on (including the
instance when the dimmer switch is erroneously put in the "ON"
state upon passing operations) and resets the dimmer switch.

AC106816

Headlight switch

ON

OFF

Headlight
relay (Lo)

ON

OFF

Headlight
relay (Hi)

ON

OFF

Hi-beam indicator
light

ON

OFF

Front ECU
Acknowdge

Hibeam

ACK

OTHERS

Passing/Dimmer
switch

ON

PASS

OFF

AB

AC101466AB

T1: 3 minutes
T2: 1 second

ON

ON

ON

OFF

OFF

OFF

Ignition switch
(IG1)

Driver's door
switch

Taillight switch or
headlight switch

Illumination
output signal

ON

OFF

T1

T2

AC106399

ON

OFF

ON

OFF

Dimmer
switch

Headlight
switch

HI

LO

OFF

Headlight

AB

SYMPTOM PROCEDURES

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SWS SYMPTOM PROCEDURES

54Bb-300

Daytime running light function
The daytime running light-ECU constantly lights up the high
beam in a reduced beam state if the ignition switch is in the
"ON" position when the headlight switch is in the "OFF" or
"TAIL" position. If the headlights illuminate while the daytime
running light function operates, the daytime running light-ECU
shut the high-beam down.

AC201190

Passing / Dimmer
switch

Headlight
switch

ON

OFF

HEAD

OFF or TAIL

Ignition switch
(IG2)

ON

OFF

Headlight

High-beam

(Normal)

Low-beam

High-beam

(Dim)

OFF

AB

SYMPTOM PROCEDURES

TSB Revision

SWS SYMPTOM PROCEDURES

54Bb-301

General circuit diagram for the taillights

SYMPTOM PROCEDURES

TSB Revision

SWS SYMPTOM PROCEDURES

54Bb-302

General circuit diagram for the headlights