2005 MITSUBISHI 380 lock

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-173
NOTE: Also check junction block connector C-215 and inter-
mediate connector C-26. If junction block connector C-215 or
intermediate connectors C-26 is damaged, repair or replace the
damaged component(s) as described in GROUP 00E, Harness
Connector Inspection P.00E-2.
Q: Is the wiring harness between power window relay
connector C-203 (terminal 4) and front power window
sub switch connector E-12 (terminal 6) in good
condition?
YES : No action is necessary and testing is complete.
NO : The wiring harness may be damaged or the
connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary. When the
front power window sub switch is operated, the front
power window (LH) should raise and lower normally.
STEP 11. Check the ground circuit to the front power
window sub switch. Measure the resistance at front power
window sub switch connector E-12.
(1) Disconnect front power window sub switch connector E-12
and measure the resistance available at the wiring harness
side of the connector.
(2) Measure the resistance value between terminal 5 and
ground, and also between terminal 8 and ground.
The resistance should be 2 ohms or less.
Q: Is the measured resistance 2 ohms or less?
YES : Go to Step 13.
NO : Go to Step 12.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-178
NOTE: Also check junction block connector C-215, intermedi-
ate connectors C-28 and D-19. If junction block connector
C-215, intermediate connector C-28 or D-19 is damaged, repair
or replace the connector as described in GROUP 00E, Harness
Connector Inspection P.00E-2.
Q: Is the wiring harness between power window relay
connector C-203 (terminal 4) and rear power window
sub switch (LH) connector E-17 (terminal 6) in good
condition?
YES : No action is necessary and testing is complete.
NO : The wiring harness may be damaged or the
connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary. When the
rear power window sub switch (LH) is operated, the
rear power window (LH) should raise and lower
normally.
STEP 20. Check the ground circuit to the rear power
window sub switch (LH). Measure the resistance at rear
power window sub switch (LH) connector E-17.
(1) Disconnect rear power window sub switch (LH) connector
E-17 and measure the resistance available at the wiring
harness side of the connector.
(2) Measure the resistance value between terminal 5 and
ground, and also between terminal 8 and ground.
The resistance should be 2 ohms or less.
Q: Is the measured resistance 2 ohms or less?
YES : Go to Step 22.
NO : Go to Step 21.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-184
NOTE: Also check junction block connector C-215, intermedi-
ate connectors C-28 and D-36. If junction block connector
C-215, intermediate connector C-28 or D-36 is damaged, repair
or replace the connector as described in GROUP 00E, Harness
Connector Inspection P.00E-2.
Q: Is the wiring harness between power window relay
connector C-203 (terminal 4) and rear power window
sub switch (RH) connector E-06 (terminal 6) in good
condition?
YES : No action is necessary and testing is complete.
NO : The wiring harness may be damaged or the
connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary. When the
rear power window sub switch (RH) is operated, the
rear power window (RH) should raise and lower
normally.
STEP 29. Check the ground circuit to the rear power
window sub switch (RH). Measure the resistance at rear
power window sub switch (RH) connector E-06.
(1) Disconnect rear power window sub switch (RH) connector
E-06 and measure the resistance available at the wiring
harness side of the connector.
(2) Measure the resistance value between terminal 5 and
ground, and also between terminal 8 and ground.
The resistance should be 2 ohms or less.
Q: Is the measured resistance 2 ohms or less?
YES : Go to Step 31.
NO : Go to Step 30.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-187
INSPECTION PROCEDURE D-5: Power Window: Front or rear passenger's power windows do not
work at all by operating the power window main switch.
.
CIRCUIT OPERATION
When you operate each power window switch for
front or rear passengers (incorporated in the power
window main switch), the corresponding power win-
dow motor operates, opening or closing each power
window.
.
TECHNICAL DESCRIPTION (COMMENT)
If the corresponding power window opens and closes
normally when each power window sub-switch is
operated, the power window main switch may be
defective.
.
TROUBLESHOOTING HINT
Refer to circuit diagrams GROUP-90
Refer to configuration diagrams GROUP-80
The power window main switch may be defective
DIAGNOSIS
Check that power window sub switches operate normally.
Q: A power window cannot work by using the power
window main switch. Can you operate the power
window by using the corresponding power window sub
switch?
YES : Replace the power window main switch. Check that
the front or rear passenger's power window can work
normally by means of power window main switch.
NO : Refer to Symptom Chart P.54B-57 before resolving
this trouble.
KEYLESS ENTRY SYSTEM
GENERAL DESCRIPTION CONCERNING THE KEYLESS ENTRY SYSTEMM1549022000255
The following ECUs affect the functions and control
of the keyless entry system.
FUNCTIONCONTROL
ECU
All door lock function Pressing the transmitter lock button ETACS-ECU
Driver’s door unlock function Pressing the transmitter unlock button once ETACS-ECU
All door unlock function Pressing the transmitter unlock button twice ETACS-ECU
Trunk unlock function Pressing the transmitter trunk button twice ETACS-ECU
Keyless entry hazard answerback and horn answerback function ETACS-ECU
Timed locking mechanism ETACS-ECU

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-188
ALL DOOR LOCK FUNCTION
.
PRESSING THE TRANSMITTER LOCK BUTTON
When the transmitter lock button is pressed, the ETACS-ECU
energizes its door lock relay to operate all the door lock actua-
tors for 0.25 second, locking all doors.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-189
DRIVER’S DOOR UNLOCK FUNCTION
.
PRESSING THE TRANSMITTER UNLOCK
BUTTON ONCE
When the transmitter unlock button is pressed once, the
ETACS-ECU energizes its door unlock relay to operate the
door lock actuator of the driver’s door for 0.25 seconds, thus
unlocking only the driver’s door.
ALL DOOR UNLOCK FUNCTION
.
PRESSING THE TRANSMITTER UNLOCK
BUTTON TWICE
When the transmitter unlock button 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
0.25 seconds each in succession. All the doors will be
unlocked.
NOTE: If the timed locking function is available, the doors will
be locked in 30 seconds after the initial unlocking. Therefore,
the second door unlocking should be done within 30 seconds
after that initial unlocking.
TRUNK UNLOCK FUNCTION
.
PRESSING THE TRANSMITTER TRUNK BUTTON
Press the "TRUNK" button twice within 5 seconds and the trunk
lid will be unlocked.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-190
KEYLESS ENTRY HAZARD ANSWERBACK AND
HORN ANSWERBACK FUNCTION
.
KEYLESS ENTRY HAZARD ANSWERBACK
FUNCTION*
1
If the keyless entry transmitter is used to send a lock signal to
the ETACS-ECU, all doors are locked and the hazard warning
lamps flash once. If an unlock signal is sent, the driver's door is
unlocked first,*
2 and if a second signal is sent, all doors are
unlocked. Each time the unlock signal is sent, the hazard warn-
ing lamps flash twice.
NOTE: *
1: The hazard answerback function can be customized
using the keyless entry transmitter (Refer to Group 42 P.42-72,
Keyless Entry System) or by using the multi center display
(middle grade type). Refer to P.54B-486.
NOTE: *
2: Vehicles with a multi center display (middle grade
type) can be customized so that a single unlock operation will
unlock all doors. Refer to P.54B-486.
.
KEYLESS ENTRY HORN ANSWERBACK
FUNCTION
If the keyless entry transmitter is used to send a lock signal to
the ETACS-ECU, the first signal locks all doors while the sec-
ond signal sounds the horn once.
NOTE: : The horn answerback function can be customized by
using the keyless entry transmitter (Refer to Group 42 P.42-72,
Keyless Entry System) or by using the multi center display
(middle grade type). Refer to P.54B-486.
TIMED LOCKING MECHANISM
.After unlocking the doors with the keyless entry transmitter, if
no doors are opened, if the ignition key is not inserted or if the
locking function is not operated, the ETACS-ECU automatically
locks the doors in 30 seconds.
NOTE: The timed locking function can be customized on vehi-
cles equipped with a multi center display (middle grade type).
Refer to P.54B-486.

SYMPTOM PROCEDURES
SIMPLIFIED WIRING SYSTEM (SWS)54B-191
INSPECTION PROCEDURE E-1: Keyless Entry System: Keyless entry system does not operate.
.
CIRCUIT OPERATION
A receiver is incorporated in the ETACS-ECU. This
receiver receives a lock or unlock signal from the
transmitter.
.
TROUBLESHOOTING HINTS
Refer to circuit diagrams GROUP-90
Refer to configuration diagrams GROUP-80
The RKE transmitter may be defective
The ETACS-ECU may be defective
DIAGNOSIS
Required Special Tools:
MB991223: Harness Set
MB991958: diagnostic tool (MUT-III Sub Assembly)
MB991824: Vehicle Communication Interface (V.C.I.)
MB991827: MUT-III USB Cable
MB991910: MUT-III Main Harness A
STEP 1. Verify the central door locking system.
Q: Does the central door locking system work normally?
YES : Go to Step 2.
NO : Refer to Inspection Procedure C-1 "The central door
locking system does not work at all P.54B-122."