null  User manual
DOOR LOCKS - POWER & KEYLESS ENTRY
1997 Mitsubishi 3000GT
1997 ACCESSORIES & EQUIPMENT
Mitsubishi - Door Locks - Power & Keyless Entry
3000GT
DESCRIPTION & OPERATION
Power door locks are controlled by driver or passenger
switches which send signals to Electronic Timer Alarm Control System
(ETACS) ECU. The ETACS-ECU sends appropriate signals to individual
door lock actuators through individual relays.
The following features are incorporated in power door lock
systems that have an ETACS-ECU:
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Once locked door is closed, system will unlock door if key
remains in ignition switch.
Continuous switching between lock and unlock of door will
disable system for about one minute.
All door locks are actuated with operation of one lock.
Mitsubishi offers an optional keyless entry system. Use of a 2 button
portable remote control operates door locks within a range of 13 ft.
(4 m). Dome light flashes twice once doors are locked and illuminates
for 3 seconds when doors are unlocked. If, after 30 seconds, door(s)
have not been opened when unlocked with keyless entry system, doors
will relock.
COMPONENT LOCATIONS
COMPONENT LOCATIONS TABLE
Component
Location
ETACS-ECU .......................
Data Link Connector (DLC) .......
Behind Left Side Of Dash
Under Left Side Of Dash,
Below Steering Column
...................... Inside Each Door
Door Lock Actuator
Door Lock Relay
No. 1 .......................... Under Left Side Of Dash
No. 2 ................... Behind Left Quarter Trim Panel
Remote Keyless Entry (RKE) .............. Behind Left Rear
Control Unit
Quarter Panel
TRANSMITTER PROGRAMMING
NOTE:
Transmitter programming should be performed only after
verifying that door lock operates normally using key.
NOTE:
Ensure ignition is off when connecting or disconnecting scan
tool.
1)
ignition to
transmitter
to register
2)
program the
Connect Scan Tool (MB991502) to DLC. Close all doors. Turn
ACC position then to OFF position. Press desired
switches (secret code), then press twice within 10 seconds
code.
Lock and unlock door once. If there are 2 transmitters,
first, then the second transmitter using the same
procedure within one minute. After completing the second programming,
lock and unlock door once.
3) Programming mode is finalized when programming of second
transmitter secret code is complete, one minute after setting secret
code, when scan tool is disconnected, when ignition is turned on or
when any door is opened.
TROUBLE SHOOTING
POWER DOOR LOCK INOPERATIVE
Operate door lock(s) with ignition switch in OFF position. If
door lock(s) do not operate, check for following possible causes:
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Burned fuse, circuit breaker or fusible link caused by
short-to-body ground.
Wire connector, or pin inside connector, disengaged at any
connector or component in system.
Defective ETACS-ECU (if equipped).
Defective door lock switch, relay or actuator.
Subfreezing weather conditions, mechanical failure, or
corroded or misaligned assemblies.
KEY REMINDER SYSTEM INOPERATIVE (ETACS-ECU CONTROLLED SYSTEM)
With key inserted in ignition switch, lock driver’s or
passenger’s door and close door. If door locks do not unlock, check
for following possible causes:
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*
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Defective key reminder switch or no input signal to ETACS
-ECU.
Defective front door switch or no input signal to ETACS-ECU.
Defective vehicle speed sensor or no input signal to ETACS
-ECU.
INPUT SIGNAL
Scan Tool Method
Turn ignition off. Connect Scan Tool (MB991502) to DLC.
Follow scan tool manufacturer’s instructions. Turn ignition on.
Perform ON/OFF operation of each door lock or power window switch. If
scan tool buzzer sounds once, ECU input signal to corresponding switch
circuit is normal.
Voltmeter Method
Using Diagnostic Trouble Code Check Harness (MB991529),
connect harness to DLC terminals No. 4 and 5. Connect voltmeter to
harness. Turn ignition on. Perform ON/OFF operation of each door lock
or power window switch. If voltmeter pointer moves once, ECU input
signal from corresponding switch circuit is normal.
COMPONENT TESTS
NOTE:
If after all testing procedures are completed, system is not
functioning properly, substitute with a known-good ETACS-ECU
and retest.
DOOR LOCK ACTUATOR
Left Front Door
1) Access left front door lock actuator. See LOCK ACTUATOR
under REMOVAL & INSTALLATION. Disconnect harness connector. Set
actuator in LOCK position. Connect positive lead of 12-volt power
source to actuator terminal No. 3 (Blue/Red wire). See WIRING DIAGRAMS
. Actuator should move to UNLOCK position when terminal No. 1
(Blue/Black wire) is connected to ground.
2) With actuator set in UNLOCK position, connect positive
lead of 12-volt power source to actuator terminal No. 1 (Blue/Black
wire). See WIRING DIAGRAMS. Actuator should move to LOCK position when
terminal No. 3 (Blue/Red wire) is connected to ground.
3) Check continuity between actuator terminals No. 2
(Brown/Yellow wire) and No. 4 (Black wire). See WIRING DIAGRAMS.
Continuity should be present with actuator set in UNLOCK position.
Continuity should not be present with actuator set to LOCK position.
Right Front Door
1) Access right front door lock actuator. See LOCK ACTUATOR
under REMOVAL & INSTALLATION. Disconnect harness connector. Set
actuator in LOCK position. Connect positive lead of 12-volt power
source to actuator terminal No. 1 (Blue/Red wire). See WIRING DIAGRAMS
. Actuator should move to UNLOCK position when terminal No. 3
(Blue/Black wire) is connected to ground.
2) With actuator set in UNLOCK position, connect positive
lead of 12-volt power source to actuator terminal No. 3 (Blue/Black
wire). See WIRING DIAGRAMS. Actuator should move to LOCK position when
terminal No. 3 (Blue/Red wire) on Montero or terminal No. 1 (Blue/Red
wire) is connected to ground.
3) On 3000GT, check continuity between actuator terminals No.
2 (Brown wire) and No. 4 (Black wire). See WIRING DIAGRAMS. Continuity
should be present with actuator set in UNLOCK position. Continuity
should not be present with actuator set to LOCK position.
DOOR LOCK POWER RELAY
1) Remove door lock relay. See COMPONENT LOCATIONS table.
Check continuity between relay terminals No. 1, 3 and 5, and terminals
No. 4, 7 and 8. See RELAY TERMINAL IDENTIFICATION table. Continuity
should be present.
2) Apply positive battery voltage to relay terminal No. 7 and
ground to terminals No. 4 and 8. Check continuity between relay
terminals No. 1 and 2, and terminals No. 2 and 3. See RELAY TERMINAL
IDENTIFICATION table. Continuity should be present. Replace relay if
continuity is not as specified.
RELAY TERMINAL IDENTIFICATION TABLE
Terminal No.
Harness Wire Color
Relays No. 1 & 2
1 ........................................... Blue/Black
2 ............................................ Red/Black
3 ............................................. Blue/Red
4 .......................................... Brown/White
5 ................................................ Black
7 ............................................ Red/Black
8 ........................................... Brown/Blue
DOOR LOCK CYLINDER SWITCH
Left Side
1) Disconnect door lock cylinder switch connector. Set door
lock switch in LOCK position. Continuity should be present between
switch terminals No. 2 (Black wire) and No. 3 (Light Green/White
wire).
2) Set door lock switch in UNLOCK position. Continuity should
be present between switch terminals No. 1 (Green/Blue wire) and No. 2
(Black wire). Continuity should not be present in any of the terminals
with switch in OFF position.
Right Side
1) Disconnect door lock cylinder switch connector. Set door
lock switch in LOCK position. Continuity should be present between
switch terminals No. 1 (Green wire) and No. 2 (Black wire).
2) Set door lock switch in UNLOCK position. Continuity should
be present between switch terminals No. 2 (Black wire) and No. 3
(Green/White wire). Continuity should not be present in any of the
terminals with switch in OFF position.
DOOR LOCK SWITCH
Main Switch (W/Power Window)
1) Disconnect door lock switch connector. Set door lock
switch in LOCK position. Continuity should be present between switch
terminals No. 6 and 7. See Fig. 1.
2) Set door lock switch in UNLOCK position. Continuity should
be present between switch terminals No. 5 and 6. Continuity should not
be present in any of the terminals with switch in OFF position.
Main Switch (W/O Power Window)
1) Disconnect door lock switch connector. Set door lock
switch in LOCK position. Continuity should be present between switch
terminals No. 2 and 3. See Fig. 3.
2) Set door lock switch in UNLOCK position. Continuity should
be present between switch terminals No. 2 and 5. Continuity should not
be present in any of the terminals with switch in OFF position.
Sub-Switch (W/Power Window)
1) Remove switch from door. Set door switch in LOCK position.
Continuity should be present between switch terminals No. 4 and 6. See
Fig. 2.
2) Set door lock switch in UNLOCK position. Continuity should
be present between switch terminals No. 1 and 6.
3) Set door lock switch on OFF position. Continuity should
not be present in any of the terminals. Replace door lock switch if
continuity is not as specified.
Fig. 1: Inspecting Door Lock Main Switch (W/Power Window)
Courtesy Of Mitsubishi Motor Sales Of America.
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