Hyundai Elantra: Description and Operation - Keyless Entry And Burglar Alarm - Body Electrical System - Hyundai Elantra HD 2006–2010 Service ManualHyundai Elantra: Description and Operation

Description

Anti-theft Warning System

Burglar Alarm System
The burglar alarm system is armed automatically after the doors, hood, and trunk are closed and locked.
The system is set off when any of these things occur :
A door is forced open.
The trunk is opened without using the key.
The hood is opened.
When the system is set off, the alarm sounds and the hazard lamp flash for about 30 seconds or until the system is disarmed by unlocking the transmitter.
For the system to arm, the ignition switch must be off and the key removed. Then, the body control module must receive signals that the doors, hood, and trunk are closed and locked. When everything is closed and locked, none of the control unit inputs are grounded.
The door switches, hood switch and trunk switch are all close and lock the doors with the remote transmitter and then the system arms immediately.
If anything is opened after the system is armed, the body control module gets a ground signal from that switch, and the system is set off.
If one of the switches is misadjusted or there is a short in the system, the system will not arm. As long as the body control module continues to get a ground signal, it thinks the vehicle is not closed and locked and will not arm.
Keyless Entry System
The burglar alarm system is integrated with the keyless entry system. The keyless entry system allows you to lock and unlock the vehicle with the remote transmitter. When you push the LOCK/UNLOCK button, all doors lock. When you push the LOCK/UNLOCK button again, all doors unlock.
The room lamp, if its switch is in the center position, will come on when you press the UNLOCK button. If you do not open a door, the light will go off in about 30 seconds, the doors will automatically relock, and the burglar alarm system will rearm. If you relock the doors with the remote transmitter within 30 seconds, the light will go off immediately.
You cannot lock or unlock the doors with the remote transmitter if the key is in the ignition switch.
The system will signal you when the doors lock and unlock by flashing the hazard lamp once when they lock, and twice when they unlock.

Function

Keyless Entry Function
DOOR LOCK / UNLOCK, TRUNK and panic operation are performed with remocon
1.
Keyless entry function is performed in a state that key in SW is eliminated from key cylinder
2.
LOCK / UNLOCK, TRUNK and panic signals are received from the transmitter and DOOR LOCK / UNLOCK, TRUNK and panic signals are output.
Transmitter(TX) Spec
1.
Transmission Distance : 30m or more from outside of the car
2.
Registration procedure of the transmitter
(1)
In registration mode, it shall be possible to register up to Max 4EA.
(2)
At re-registration, data are registered newly after deleting the previous TX DATA
No.
Saved CODE
CODE to change
Changed CODE
1
-
A
A
2
A
B
B (A is deleted)
3
B
C, D
C, D (B is deleted)
4
C, D
E, F, G
E, F, G (C, D is deleted)
5
E, F, G
H, I, J, K
H, I, J, K (E, F, G are deleted)
6
A, B
C, F, E, F, G
C, F, E, F
7
A, B
C, C, D, E, F
C, F, E,
8
A, B, C, D
A
A
9
A, B, C, D
E
E

(3)
For the registration procedures by using Hi-scan tool, refer to "TRANSMITTER CODE REGISTRATION".
3.
Transmitter signal & Receiver Spec
(1)
Transmission signal
A.
Transmit relevant transmission DATA (Transmission frame) twice by pushing TX SW.
B.
Only LOCK signal is output when pushing TX LOCK SW and UNLOCK SW at the same time.
DISARM
Condition 1
State
Description
Initial Condition
ALARM state
Event
IGN KEY ON during 30sec or ALT"L" = ON
TX(Transmitter) Unlock & Any Door open(4Door SW ON)
TX(Transmitter) Trunk
TX(Transmitter) Lock & Lock confirm failed
Driver door key unlock switch ON.
Driver door key lock SW ON & Lock confirm failed
Action
The state goes to DISARM state
Hazard relay off, Horn relay off and start inhibit relay off.
TX Unlock
-
Unlock relay on for 0.5 sec.
-
Hazard relay on (TWICE)

Condition 2
State
Description
Initial Condition
DISARM state & (IGN KEY OUT) & Any Door open
Event
TX Unlock
Action
No state change
TX UNLOCK
-
Unlock relay on for 0.5 sec
-
Hazard relay on (Twice)

Condition 3
State
Description
Initial Condition
ARMWAIT state
Event
At least one entrance opened
Any door is unlocked
Key in SW ON
Driver door key unlock SW ON
Action
The state goes to DISARM state

Condition 4
State
Description
Initial Condition
AUTOLOCKTIMER1 state
Event
At least one entrance opened
Key in SW ON
Lock by AUTOLOCK, but Lock confirmation failure
Tx Lock, but Lock confirmation failure
Driver door key unlock SW ON, but Lock confirmation failure
Action
The state goes to DISARM state

Condition 5
State
Description
Initial Condition
AUTOLOCKTIMER2 state
Event
Any Door open
Key in SW ON
Hood Open & Memory Hood was Close
Trunk Open & Memory Trunk was Close
Lock by AUTOLOCK, but Lock confirmation failure
Tx Lock, but Lock confirmation failure
Driver door key unlock SW ON, but Lock confirmation failure
Action
The state goes to DISARM state

Condition 6
State
Description
Initial Condition
ARM state or ARM HOLD state
Event
IGN KEY ON
Driver door key unlock SW ON
Action
The state goes to DISARM state

Condition 7
State
Description
Initial Condition
REARM state
Event
IGN KEY ON during 30sec or ALT"L" = ON
Tx Trunk
Tx Lock, but Lock confirmation failure
Driver door key unlock SW ON
Driver door key unlock SW ON & Lock confirmation failure
Action
The state goes to DISARM state
Start Inhibit relay OFF

Condition 8
State
Description
Initial Condition
PREARM state
Event
Key in SW ON
All entrance closed & Any Door is unlocked
Any Door open & Tx Unlock
Action
The state goes to DISARM state
TX UNLOCK
-
Unlock relay on for 0.5sec
-
Hazard relay on (Twice)

ARM
Condition 1
State
Description
Initial Condition
ARM state
Event
Tx Lock
Action
No state change
Hazard relay 1Time on(1sec)

Condition 2
State
Description
Initial Condition
ARMHOLD state
Event
Trunk closed for at least Trunk Release Time Out(default 30s)
Action
The state goes to ARM state

Condition 3
State
Description
Initial Condition
ARMWAIT state
Event
ARMWAITTIMER is expired
Action
The state goes to ARM state

ALARM
Condition 1
State
Description
Initial Condition
ARM state
Event
Any entrance open (DOORS, TRUNK, or HOOD)
Action
The state goes to ALARM state
The horn rings 3 times with 27sec(±2sec) on 10sec(±2sec)off
The hazard is driven also (During Horn driving)
Engine Start Inhibit is ON

T1 : 27s (±2sec), T2 : 10s (±2sec),
T3 : 0.5s ± 0.1 sec.
Horn Output : Period : 1sec(Can be calibrated Horn Period), 50% Duty
Condition 2
State
Description
Initial Condition
ARMHOLD state
Event
Any door open or Hood open
KEY IN1 Status
Action
The state goes to ALARM state
The horn rings 3 times with 27sec(±2sec) on 10sec(±2sec) off
The hazard is driven also (During Horn driving)
Engine Start Inhibit is ON

Condition 3
State
Description
Initial Condition
REARM state
Event
Any door open or Hood open or Trunk open
Action
The state goes to ALARM state
The horn rings 3 times with 27sec(±2sec) on 10sec(±2sec) off

ARM WAIT MODE
Condition 1
State
Description
Initial Condition
ARMWAIT state
Event
Tx Lock
Action
The state goes to State
TX LOCK
-
Hazard relay 1 Time on(1sec)

Condition 2
State
Description
Initial Condition
DISARM state & IGN KEY OUT & All entrances closed (DOORS, HOOD and TRUNK)
Event
Tx Lock & locked confirmed
Driver door key lock SW ON & Locked confirmed
All doors locked & All doors closed (All doors not closed 1→0)
Action
The state goes to ARMWAIT State
Start ARMWAITTIMER
Hazard relay 1Time on(1sec)

Condition 3
State
Description
Initial Condition
ALARM state & All entrances closed(DOORS, HOOD and TRUNK)
Event
Tx Lock & locked confirmed
Driver door key lock SW ON & Locked confirmed
Action
The state goes to A
    Components and Components Location
    Component Location 1. Hood switch 2. Burglar horn 3. Body control module 4. Key warning switch 5. Front door switch 6. Front door lock actuator & switch ...

    Repair procedures
    Inspection Burglar Alarm Horn Relay Check for continuity between the terminals. 1. There should be continuity between the No.8 and No.18 terminals when power a ...