Mitsubishi Montero (2004+). Manual — part 736

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-201

DIAGNOSIS

Check that power window sub-switches operate normally.
Q: A power window can not work by means of the power

window main switch. Can you operate the power
window by means of the corresponding power window
sub-switch?
YES : Replace the power window main switch. The power

window main switch is operated, the front
passenger’s or rear power window function should
now work normally.

NO : Refer to Inspection Procedure D-4 "Power windows

do not work normally by operating the passenger’s
and rear power window switches

P.54B-165

."

KEYLESS ENTRY SYSTEM

GENERAL DESCRIPTION CONCERNING THE KEYLESS ENTRY SYSTEM

M1549022000170

The following ECUs affect the functions and control
of the keyless entry system.

All door lock function

.

Operate the transmitter lock switch
When the transmitter lock switch is pressed, the ETACS-ECU
energizes its door lock relay to operate all the door lock actua-
tors for 0.5 second thus causing all doors to be locked.

FUNCTION

CONTROL
ECU

All door lock function

Operate the transmitter lock switch

ETACS-ECU

Driver’s door unlock function

Press the transmitter unlock switch once

All door unlock function

Press the transmitter unlock switch twice

Keyless entry hazard answerback and horn answerback function

AC203059AC

ON(LOCK)

OFF

TRANSMITTER
LOCK SWITCH

t: 0.5 second

OFF

ON

DOOR LOCK RELAY
OUTPUT

ALL DOOR'S
LOCK ACTUATOR

UNLOCK

LOCK

t

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-202

Driver’s door unlock function

.

Press the transmitter unlock switch once
When the transmitter unlock switch is pressed once, the
ETACS-ECU energizes its door unlock relay to operate the
door lock actuator of the driver’s door for 0.5 second thus caus-
ing only the driver’s door to be unlocked.

All door unlock function

.

Press the transmitter unlock switch twice
When the transmitter unlock switch is pressed twice, the
ETACS-ECU energizes its door unlock relay to operate the
driver’s door lock actuator and the other door lock actuators for
0.5 second each in succession. Then, the doors will be
unlocked.

AC203063AC

ON

(UNLOCK)

OFF

TRANSMITTER
UNLOCK
SWITCH

t: 0.5 second

OFF

ON

DOOR UNLOCK RELAY
OUTPUT

DRIVER'S DOOR
LOCK ACTUATOR

UNLOCK

LOCK

t

AC203065 AC

ON

(UNLOCK)

OFF

TRANSMITTER
UNLOCK SWITCH

t: 0.5 second

OFF

ON

DOOR UNLOCK
RELAY OUTPUT

LOCK

UNLOCK

LOCK

UNLOCK

DRIVER'S DOOR
LOCK ACTUATOR

t

PASSESNGER'S
DOOR LOCK
ACTUATORS

t

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-203

Keyless entry hazard answerback and horn
answerback function

The hazard answerback and horn answerback function which
facilities checking of lock or unlock operations even during day-
time is provided. When the lock signal is input from the keyless
entry transmitter to the ETACS-ECU, the hazard light flashes
twice and horn sounds once. When the unlock signal is input,
hazard light flashes once.
NOTE: Hazard answerback function can be disabled by the
configuration function (Refer to GROUP 54B

P.54B-635

.)

AC203077AB

LOCK

OFF

UNLOCK

ON

OFF

ON

OFF

Illuminated

Not illuminated

KEYLESS ENTRY
TRANSMITTER
SWITCH

LOCK RELAY
OUTPUT

UNLOCK RELAY
OUTPUT

HAZARD LIGHT
FLASHING
STATE

HORN RELAY
OUTPUT

ON

OFF

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-204

General circuit diagram for the keyless entry system