door lock MITSUBISHI LANCER EVOLUTION VI 1999 Workshop Manual

BODY – General / Keyless Entry System42-2
GENERAL
OUTLINE OF CHANGE

The descriptions of the troubleshooting using on MUT-II tester have been incorporated.
KEYLESS ENTRY SYSTEM
SPECIAL TOOL
ToolNumberNameUse
MB991502MUT-II sub assemblyRecording secret codes
TROUBLESHOOTING
INSPECTION CHART FOR TROUBLE SYMPTOMS
Trouble symptomInspection procedure No.Reference page
None of the doors can be locked or unlocked using the transmitter.142-2
All of the doors can be locked and unlocked using the transmitter,
but the room lamp does not flash or illuminate. (However, the room
lamp operates normally when the doors are opened and closed.)242-4
Secret codes cannot be registered.342-4
INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS
INSPECTION PROCEDURE 1
None of the doors can be locked or unlocked using the
transmitter.
Probable cause
The cause may be a malfunction of the transmitter, a malfunction of the receiver
or the lock and unlock signals are not being input to the ETACS-ECU.
Malfunction of transmitter

Malfunction of receiver

Malfunction of ETACS-ECU

Malfunction of wiring harness or connector

Malfunction of key reminder switch

Malfunction of door switch
NG
To next page
OK
Replace the transmitter battery. (Refer to P.42-7.)
Ye s
Has the secret code been registered properly? *NGRe-register the secret code. (Refer to P.42-8.)
Can the doors be locked and unlocked by the driver’s-side door
key cylinder and lock knob?NoCheck the centre door lock system.
NOTE
*: This should be done if a transmitter or receiver has been replaced, and if a secret code has not
been registered properly.

BODY – Keyless Entry System42-4
INSPECTION PROCEDURE 2
All of the doors can be locked and unlocked using the
transmitter, but the room lamp does not flash or
illuminate. (However, the room lamp operates normally
when the doors are opened and closed.)
Probable cause
If the room lamp operates normally when the doors are opened and closed, the cause
of the problem may be a malfunction of the receiver or a malfunction of the harness
between the room lamp the receiver.
Malfunction of receiver

Malfunction of connector or wiring harness
NG
Repair
NG
Check the harness wire between room lamp and receiver, and
repair if necessary.
OK
Replace the receiver.
OK
Check trouble symptoms.
Measure at the receiver connector D-01.

Disconnect the connector, and measure at the harness side.

Voltage between 11 and body earth
OK:System voltageNGCheck the following connectors:
B-80, D-01
INSPECTION PROCEDURE 3
Secret codes cannot be registered.
Probable cause
The cause may be a malfunction of the diagnosis connector, a malfunction of the
power supply or earth circuit of the receiver, a malfunction of the earth circuit or
a malfunction of the diagnosis output circuit.
Malfunction of receiver

Malfunction of MUT-II

Malfunction of connector or wiring harness
NG
Repair
NG
Check the harness wire, and repair if necessary.

Between receiver and diagnosis connector
NG
Repair
NG
Check the harness wire, and repair if necessary.

Between fusible link No.1 and diagnosis connector
OK
Check trouble symptoms.NGCheck the harness wire, and repair if necessary.

Between diagnosis connector and earth
Ye s
To next page
NG
Check the following
connectors:
B-22, B-50NG
Repair
OK
Measure at the diagnosis
connector B-22.

Continuity between 4
and body earth

Continuity between 5
and body earth
OK:ContinuityOKReplace MUT-II.
OK
Check trouble symptoms.
No
Measure at the diagnosis
connector B-22

Voltage between 16
and body earth
OK:System voltageNGCheck the following connectors:
B-22, B-49, B-75
OK
Can the MUT-II communicate with other systems?
OK
Check trouble symptoms.
Measure at the diagnosis connector B-22 and the receiver connector
D-01.

Disconnect the connector, and measure at harness side.

Continuity between following terminals:
OK:Continuity
7 – 1 NGCheck the following connectors:
B-22, D-01

BODY – Keyless Entry System42-5
NG
Repair
NG
Check the harness wire, and repair if necessary.

Between fusible link No.1 and receiver

Between ignition switch and receiver
NG
Repair
NG
Check the harness wire, and repair if necessary.

Between receiver and earth
OK
Replace the receiver.
OK
Check trouble symptoms.
OK
Measure at the receiver connector D-01.

Disconnect the connector, and measure at the harness side.

Between 20 and body earth
OK:ContinuityNGCheck the following connectors:
B-50, D-01
OK
Check trouble symptoms.
Measure at the receiver connector D-01.

Disconnect the connector, and measure at the harness side.

Voltage between 9 and body earth

Voltage between 10 and body earth
OK:System voltageNGCheck the following connectors:
B-49, B-75, D-01
From previous page
INSPECTION OF RECEIVER TERMINAL VOLTAGE
TerminalSignal nameConditionsTerminal voltage
2Door switchOne or more doors are open (Door switch: ON)0 V
All doors are closed (Door switch: OFF)System voltage
6Door lock actuator
switch (driver’s side)
LOCK5 V and pulse output*
switch (driver’s side)
UNLOCK0 V
7Diagnosis changeover
input
When MUT-II is connected0 V
input
When MUT-II is disconnectedSystem voltage
8Key reminder switchOFF (When ignition key is inserted)5 V and pulse output*
ON (When ignition key is removed)0 V
9Ignition switchIgnition switch: ACC or ONSystem voltage
Ignition switch: OFF0 V
10Receiver power supplyAt all timesSystem voltage
11Room lamp outputOne or more door are open (Door switch: ON)0 V
All doors are closed (Door switch: OFF)System voltage

BODY – Keyless Entry System42-6
TerminalSignal nameConditionsTerminal voltage
12Door lock outputWhen activated0 V
When not activatedSystem voltage
14Door unlock outputWhen activated0 V
When not activatedSystem voltage
20EarthAt all times0 V
NOTE
Values marked with * should be measured using an oscilloscope. (The value will alternate between 0
V and 0.03 V if a circuit tester is used.)

BODY – Keyless Entry System42-8
ASSEMBLY SERVICE POINTS
ABATTERY INSTALLATION
Install a new battery with (+) side upward.
Battery required for replacement:
Lithium battery CR1216
SECRET CODE REGISTRATION METHOD
Each individual secret code is registered inside
the transmitter, and so it is necessary to register
these codes with the EEPROM inside the receiver
in the following cases.

When either the transmitter or receiver is
replaced;

If it appears that a problem is occurring because
of faulty registration of a code.
A maximum of two different codes can be stored
in the memory area of the EEPROM (two different
transmitters can be used). When the code for the
first transmitter is registered, the previously-regis-
tered codes for two transmitters are cleared.
Therefore, if you are using two transmitters or are
adding a second transmitter, the codes for both
transmitters must be registered at the same time.
Before beginning with the registration, check that
the doors lock normally when the key is used.
1. Connect the MUT-II to the diagnosis connector.
NOTE
This will connect terminal (1) of the diagnosis
connector to earth, and the system will be in
secret code registration standby mode.
Caution
Always turn the ignition switch to OFF before
connecting and disconnecting the MUT-II.
2. Close all the doors.
3. Turn the ignition switch to ACC and then back
to OFF.NOTE
The doors will lock and unlock once at this
time and the system will switch to registration
mode.
4. Press the transmitter switch, and then press
it two times within 10 seconds of the first press.
This will register the code.
5. After registration is completed, the doors will
be automatically locked and unlocked once.
6. If you are using two transmitters or have added
a second transmitter, the same registration
procedure should be carried out for the second
transmitter, and it should be carried out within
one minute after registration of the code for
the first transmitter has been completed. After
the second registration is completed, the doors
will be automatically locked and unlocked once.
7. Registration mode will be cancelled if one of
the following conditions is met.

When the secret codes for two transmitters
have been registered;

When 1 minute has passed after
registration mode started;

If the MUT-II is disconnected (the earth
connection is broken);

If the ignition switch is turned to ON;

If any of the doors are opened;
8. After registration is completed, carry out the
following to check if the keyless entry system
is operable properly.

Remove the ignition key.

Close all the doors.

SRS – Air Bag Module Disposal Procedures52B-33
3. Peform the following procedure to deploy each air bag
module.

(1) Remove the steering column cover lower.
(2) Remove the connection between the clock spring
2-pin connector (red) and the body wiring harness
connector.
NOTE
If the clock spring connector is disconnected from
the body wiring harness, both electrodes of the clock
spring connector will be automatically shorted to
prevent unintended deployment of the air bag due
to static electricity, etc.
(3) Connect two wires, each six meters or longer, to the
two leads of SRS air bag adapter harness A and
cover the connections with insulation tape. The other
ends of the two wires should be connected to each
other (short-circuited), to prevent sudden unexpected
deployment of the air bag.
(4) Connect the clock spring or air bag module (front
passenger’s side) 2-pin connector (red) to SRS air
bag adapter harness A and pass the deployment
wires out of the vehicle.
(5) Shut all the doors with their window glasses closed
and cover the vehicle with a body cover to suppress
explosion noise leaks as much as possible.
Caution
Be sure to wrap the vehicle entirely in a body cover,
otherwise damaged glass panes could break into
fragments, bringing about a very dangerous situation.
(6) At a location as far away from the vehicle as possible,
disconnect the two connected wires from each other,
and connect them to the two terminals of the battery
(which has been removed from the vehicle) to deploy
the air bag.
Clock spring 2-pin
connector (red)
Body wiring harness
connector (2-pin)
SRS air bag
adapter
harness A
MB686560Connection
6 m or
longer
Two wires Insulation
tape
SRS air bag adapter
harness A
MB686560
2-pin connector (red)
Deployment wires
Body cover
Deployment
wire harness

SRS – Air Bag Module Disposal Procedures52B-35

(1) Remove the glove box. (Refer to P.52B-27.)
(2) Remove the connection between the air bag module
(front passenger’s side) connector (red 2-pin) and
the body wiring harness connector.
(3) Connect two wires, each six meters or longer, to the
two leads of SRS air bag adapter harness A and
cover the connections with insulation tape. The other
ends of the two wires should be connected to each
other (short-circuited), to prevent sudden unexpected
deployment of the air bag.
(4) Connect the clock spring or air bag module (front
passenger’s side) 2-pin connector (red) to SRS air
bag adapter harness A and pass the deployment
wires out of the vehicle.
(5) Shut all the doors with their window glasses closed
and cover the vehicle with a body cover to suppress
explosion noise leaks as much as possible.
Caution
Be sure to wrap the vehicle entirely in a body cover,
otherwise damaged glass panes could break into
fragments, bringing about a very dangerous situation.
(6) At a location as far away from the vehicle as possible,
disconnect the two connected wires from each other,
and connect them to the two terminals of the battery
(which has been removed from the vehicle) to deploy
the air bag.
Body wiring harness
connector
(2-pin)
Air bag module 2-pin
connector (red)
SRS air bag
adapter
harness A
MB686560Connection
6 m or
longer
Two wires Insulation
tape
SRS air bag adapter
harness A
MB686560
2-pin connector (red)
Deployment wires
Body cover
Deployment
wire harness

CHASSIS ELECTRICAL – Ignition Switch54-7
INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS
Inspection Procedure 1
Key hole illumination lamp remains illuminated.
Probable cause
The cause is probably a harness short or a defective ETACS-ECU or buzzer ECU.
Malfunction of harness wire

Malfunction of ETACS-ECU

Malfunction of buzzer ECU
Disconnect the ignition key cylinder illumination lamp connector
B-84 and measure the continuity:

Between 4 and body earth
OK:ConductingNGCheck the harness wire between the ignition key cylinder illumination
lamp and junction block, and repair if necessary.
OK
Replace the ETACS-ECU or buzzer ECU.
Inspection Procedure 2
Even if driver’s side door is opened, key hole illumination
lamp does not illuminate.
Probable cause
The cause is probably a defective key hole illumination lamp circuit system, or a
defective driver’s side door switch input circuit system if the ignition key reminder
warning buzzer is also faulty.
Malfunction of driver’s side door switch

Malfunction of bulb

Malfunction of connector

Malfunction of harness wire

Malfunction of ETACS-ECU

Malfunction of buzzer ECU
OK
Replace ETACS-ECU or buzzer ECU.

MUT-II Pulse check
Driver’s side door switch input signal
OK:The MUT-II buzzer sounds once
when the driver’s side door switch
is ON.NG
Driver’s side door switch input circuit
system inspection (Refer to Inspection
Procedure 6 on P.54-10.)
OK
Disconncet the key hole illumination
lamp connector B-84, and measure at
the harness side.

Voltage between 3 and body earth
OK:System voltageNGCheck the following connectors:
B-49, B-75, B-73NG
Repair
OK
Check trouble symptom.
NG
Check the harness wire between
ETACS-ECU or buzzer ECU and fusible
link 1, and repair if necessary.
Vehicle with buzzer ECU
Remove ETACS-ECU or buzzer ECU
from junction block, and measure at the
junction block connector B-79

Ignition key cylinder illumination
lamp connector connected

Voltage between 12 and body earth
OK:System voltage
OK
OK
NG
Check the following connectors:
B-84, B-49, B-75, B-73NG
Repair
OK
Check trouble symptom.
Check the harness wire between the
ignition key cylinder illumination lamp
and fusible link 1, and repair if neces-
sary.
NG

CHASSIS ELECTRICAL – Ignition Switch54-8
Inspection Procedure 3
While key hole illumination lamp is illuminated, ignition
key is turned to the ON position but key hole illumination
lamp does not switch off. (However, it switch off after 15
seconds.)
Probable cause
While the key reminder warning buzzer is sounding, the
ignition key is turned to the ON position but the sound
dose not stop. (However, it stops when the driver’s side
door is closed.)
The cause is probably a malfunction of the ignition switch input circuit, ETACS-ECU
or buzzer ECU. Furthermore, if there is a malfunction of a multipurpose fuse, the
cause may also be a short circuit in a harness.
Malfunction of fuse

Malfunction of connector

Malfunction of harness

Malfunction of ETACS-ECU

Malfunction of buzzer ECU
OK
Replace ETACS-ECU.

MUT-II Pulse check
Ignition switch input inspection
OK:The MUT-II buzzer sounds once
when the ignition key is turned
to the ON from OFF position.

NG
Disconnect the junction block connector
B-76 and measure at the harness side.

Voltage between the terminal No.
8 and body earth.
OK:System voltageNGCheck the following connectors:
B-76, B-79Repair
OK
Check trouble symptom.
Replace the buzzer ECU.
Replace ETACS-ECU.
Check the harness wire between the
ignition switch (IG1) and junction block
and repair if necessary.
OK
Junction block harness continuity check
NG
NOTE
The stop indicated with a dotted line
applies only to vehicles with buzzer
ECU. OK
NG
Replace NG

CHASSIS ELECTRICAL – Ignition Switch54-10
Inspection Procedure 5
The key reminder warning buzzer dose not sound even if
the driver’s side door is opened while the key is still
inserted. (However, the ignition key should be in the OFF
position.)
Probable cause
The cause is probably a malfunction of the door switch input circuit system, if the
key hole illumination lamp is also faulty. A malfunction of the key reminder switch
input circuit system is also suspected.
Malfunction of door switch

Malfunction of key reminder switch

Malfunction of connector

Malfunction of harness

Malfunction of ETACS-ECU

Malfunction of buzzer ECU
Driver’s side door switch input circuit
system inspection (Refer to Inspection
Procedure 6 on P.54-10.)
OK

MUT-II Pulse check
Key reminder switch input inspection
OK:The MUT-II buzzer sounds once
when the ignition key is removed
from the key cylinder.NGKey reminder switch continuity inspec-
tion (Refer to P.54-12.)NG
Replace
OK
Inspect the harness between the key
reminder switch and junction block.NG
Repair
OK
Replace the ETACS-ECU.OK

MUT-II Pulse check
Driver’s side door switch input signal
OK:The MUT-II buzzer sounds once
when the driver’s side door switch
is turned to the ON position.NG
OK
Junction block harness continuity checkNG
Repair

OK
Inspect the harness between the key
reminder switch and body earth.
Replace the buzzer ECU.
NOTE
The stop indicated with a dotted line
applies only to vehicles with buzzer
ECU.NG
Repair
Inspection Procedure 6
Driver’s side door switch input circuit system inspection
Door switch inspectionNG
Replace
OK
Disconnect the door switch connector
D-03 and measure at the harness side.

Voltage between the terminal No.
2 and body earth
OK:System voltageNGCheck the following connectors.
B-80, B-79NG
Repair
OK
Check trouble symptom.NGCheck the harness between the ETACS-
ECU or buzzer ECU door switch and
repair if necessary.
OK
Check trouble symptom.
NG
Replace the ETACS-ECU or the buzzer
ecu.OK
Check the following connectors.
D-03