Kia Forte: Body Electrical System / Keyless Entry And Burglar Alarm

Kia Forte 2019-2024 (BD) Service Manual / Body Electrical System / Keyless Entry And Burglar Alarm

Specifications

Specification

Item	Specification
Power source	3 V
Operating temperature	14 - 140°F (-10 - 60°C)
RF Modulation	FSK
LF Modulation	ASK
RF frequency	433.92 MHz
Button number	3
Function	Door lock
	Door unlock
	Trunk unlock

Components and components location

Components

[4DR]

1. Hood switch
2. Burglar horn
3. Integrated Body Control Unit (IBU)
4. Door lock / unlock buzzer

5. Front door actuator & switch
6. Rear door actuator & switch
7. Trunk actuator & switch

[5DR]

1. Hood switch
2. Burglar horn
3. Integrated Body Control Unit (IBU)
4. Door lock / unlock buzzer

5. Front door actuator & switch
6. Rear door actuator & switch
7. Tatilgate actuator & switch

Description and operation

Description

Burglar Alarm State [B/A State]

B/A State

Description

DISARM

1)	This is the state when "ARM" mode is off.

2)	If all doors or hood or trunk are opened, there is no alarm sound.

3)	Security indicator keeps blinking in IGN OFF while it lights out in ACC ON.

ARMWAIT

1)	If the IBU receives locking signals from remote control or Passive lock (specification of Smart Key) or driver’s seat door key lock with the conditions for "ARM WAIT" satisfied, the IBU waits for 30 seconds after outputting "All Door Lock" signal before entering "ARM WAIT" mode.

2)	For 30 seconds of "ARM WAIT" mode, there is no alarm sound and "ARM" mode turns off even if a burglary occurs.

3)	Under any conditions, it is impossible to directly enter "ARM" mode without passing through "ARM WAIT" mode.

4)	Security indicator remains on for 30 seconds of "ARM WAIT" mode.

※ Remark: For a vehicle equipped with Smart Key system, the same process is applied to Passive door lock function.

B/A State

Description

AUTO LOCK TIMER 1

1)	This is a similar function to RELOCK (automatic locking system after 30 seconds).

2)	If UNLOCK button in remote control is pressed with "ARM WAIT" conditions satisfied, or in "ARM" mode, all doors are unlocked and then timer set for 30 seconds starts running.

3)	After the 30 seconds the IBU automatically outputs all door lock signal and enters "ARM WAIT" mode.

4)	After AUTO LOCK TIMER 1 (30 seconds) runs out, the IBU automatically enters "ARM" mode via "ARM WAIT" mode (30 seconds).

5)	In case that the driver presses UNLOCK button by mistake, this safety function lets the vehicle enter "ARM" mode after 60 seconds.

6)	Security indicator keeps blinking throughout AUTO LOCK TIMER1 process.

※ Remark: For a vehicle equipped with Smart Key system, the same process is applied to Passive door lock function.

B/A State

Description

AUTO LOCK TIMER 2

1)	This shares the same purpose with AUTO LOCK TIMER 1 but operation conditions are different.

2)	This function operates if UNLOCK button in the remote control is pressed when all doors are closed except hood or trunk. After 30 seconds, the vehicle automatically enters door lock mode.

3)	But after the 30 seconds, it is impossible to move to "ARM WAIT" mode because hood or trunk is open ("PRE ARM" mode is maintained).

4)	As soon as hood or trunk is closed, the vehicle automatically moves to "ARM" mode via "ARM WAIT".

5)	During AUTO LOCK TIMER 2, security indicator keeps blinking.

※ Remark: For a vehicle equipped with Smart Key system, the same process is applied to Passive door lock function.

B/A State

Description

PRE ARM

1-1. This is the state right before entering "ARM" mode after AUTO LOCK Timer 2 is completed and all doors are closed.
1-2. If the driver closes hood or trunk, hazard lamp blinks one time and then the vehicle automatically enters "ARM" mode via "ARM WAIT" mode.
2-1. If LOCK button is pressed while at least one of all doors, hood and trunk is open, "PRE ARM" mode turns on.
2-2. Because all doors locking signal is issued but the conditions for "ARM WAIT" are not satisfied, the vehicle remains in standby mode and enters ARM mode via ARM WAIT mode as soon as the door being open is closed.
2-3. In case intrusion is detected in PRE ARM mode, the vehicle turns into DISARM mode.
2-4. Security indicator keeps blinking in PRE ARM mode.

B/A State

Description

RE ARM

1)	In "REARM" state, if the vehicle intrusion is detected, flashing and alarm sound are activated again and the state changes to ALARM mode.

2)	Burglar Alarm state moves to RE ARM mode after the timer of 27 seconds is completed.

3)	Security Indicator keeps blinking.

B/A State

Description

AUTOLOCK TIMER3

1)	B/A state changes to "AUTOLockTIMER3", when TX-Trunk command operated.

2)	B/A state changes "AUTOLOCKTIMER3" to "ARMWAIT", when the "30sec." timer expires with all doors lock and closed.

3)	B/A state changes "AUTOLOCKTIMER3" to "DISARM", when any door open.

4)	In "AUTOLOCKTIMER3" state, timer "30sec." timer is running. If this timer expired, state transits to "PREARM" state with Trunk Open.

5)	In this state, Security indicator keeps blinking

B/A State

Description

ARM HOLD
(Alarm hold : Trunk)
※Non-PTL option

1)	"ARM HOLD" mode is similar to the existing trunk alarm hold mode.

2)	If trunk is opened by a remote control (including smart key) in ARM mode, the vehicle enters ARM HOLD mode which holds off the burglar alarm only for the open trunk.

3)	As long as trunk is closed, ARM HOLD mode keeps on without break.

4)	When the opened trunk is shut down, timer set for 30 seconds starts running. For the 30 seconds of ARM HOLD mode, burglar alarm does not go off if trunk is opened.

5)	When 30 seconds pass after trunk is closed, the vehicle immediately enters ARM mode.

6)	During ARM HOLD more, ARM mode is maintained for doors and hood so if intrusion through any door or hood is detected, burglar alarm normally goes off.

7)	Security indicator keeps blinking during ARM HOLD mode.

Note 1: ARM HOLD is a mode that defers activation of ARM mode only for trunk. During ARM HOLD mode, ARM mode is applied to doors and hood.

Note 2: When using the ignition key to open the trunk, the ARM HOLD function works in the same way, provided that the "Door Key Burglar Alarm" function should be enabled. if this is disabled, the key-based ARM HOLD is off and using the key to opening the trunk is determined as a theft and the alarm is issued.

B/A State

Description

RE ARM
(ARM mode is on again)

1)	If the door, hood and trunk are all closed after the termination of ALARM mode, it means that the ARM mode is on again.

2)	At this time the actuator state (door lock/unlock) is neglected and ARM mode is kept until the remote control signal is received (normal ARM mode).

3)	The security indicator keeps flickering during this mode.

RESET

1)	When the battery is removed in ALARM or RE ARM mode, RESET mode is on.

2)	When the battery is installed after RESET, the theft alarm operation resumes.(instead of remained output, the cycle of 27 seconds ON/10 seconds OFF repeats three times)

B/A State

Description

KEY ON 30 second deactivation
(Non-Smart Key option)

1)	For a vehicle without smart key option, if it waits for 30 seconds with the ignition key on during ALARM mode, the vehicle enters DISARM mode.

Even before 3O seconds pass, if the engine starts (Alternator "L" terminal voltage is HI: sent from the cluster module to CAN data), the theft alarm is instantly deactivated. (No ignition inhibition: The immobilizer system is applied as a basic function so the ignition system is normally operated by the registered immobilizer key during alarming)

※ For a smart key-based vehicle, the alarm is deactivated instantly after the smart key authentication.

When ARM mode is on, the trunk OPEN and central door unlock are not allowed.

From the moment that a vehicle enters ARM WAIT mode by activating all door lock using the remote control or smart key, the central door unlock switch of the indoor trunk unlock switch or DDM & ADM (power window switch of driver and passenger seat) is disabled. (theft prevention)

※ The function is equally applied to ARM WAIT/ARM/ALARM/RE ARM modes.

Repair procedures

Inspection

When prying with a flat-tip screwdriver or use a prying trim tool, wrap it with protective tape, and apply protective tape around the related parts, to prevent damage.

Front Door Lock Module

1.	Remove the front door trim. (Refer to Body - "Front Door Trim")

2.	Remove the front door module. (Refer to Body - "Front Door Module")

Disconnect the connector from the door lock actuator.

No.	Description
No.	Left	Right
1	-	Ajar switch
2	Motor COM	Lock / Unlock switch
3	Motor	Switch COM
4	Key lock switch	Key unlock switch
5	Key unlock switch	Key lock switch
6	Switch COM	Motor
7	Lock / Unlock switch	Motor COM
8	Ajar switch	-

4.	Check actuator operation by connecting power and ground as shown below. To prevent damage to the actuator, apply battery voltage only momentarily.

Rear Door Lock Module

1.	Remove the rear door trim. (Refer to Body - "Rear Door Trim")

2.	Remove the rear door module. (Refer to Body - "Rear Door Module")

Disconnect the connector from the door lock actuator

No.	Description
No.	Left	Right
1	-	Ajar switch
2	Motor COM	Lock / Unlock switch
3	Motor	Switch COM
4	-	-
5	-	-
6	Switch COM	Motor
7	Lock / Unlock switch	Motor COM
8	Ajar switch	-

4.	Check actuator operation by connecting power and ground as shown below. To prevent damage to the actuator, apply battery voltage only momentarily.

Trunk Lock Module [4DR]

1.	Remove the trunk lid trim. (Refer to Body - "Trunk lid trim")

2.	Disconnect the connector from the trunk lid latch.

3.	Check actuator operation by connecting power and ground as shown below. To prevent damage to the actuator, apply battery voltage only momentarily.

Tailgate Lock Module [5DR]

1.	Remove the tailgate lid trim. (Refer to Tailgate - "Tailgate Trim")

2.	Disconnect the connector from the tailgate lid latch.

3.	Check actuator operation by connecting power and ground as shown below. To prevent damage to the actuator, apply battery voltage only momentarily.

Trunk Lid Handle [4DR]

1.	Check for continuity between the terminals.

Tailgate Lid Handle [5DR]

1.	Remove the tailgate lid trim. (Refer to Tailgate - "Tailgate Trim")

2.	Check for continuity between the terminals.

Hood Switch

1.	Check for continuity between the terminals.

Burglar Horn

1.	Test the burglar horn by connecting battery power to the terminal 2 and ground the terminal 1.

Removal

Front Door Lock Module

1.	Remove the front door latch. (Refer to Body - "Front Door Latch")

Rear Door Lock Module

1.	Remove the rear door latch. (Refer to Body - "Rear Door Latch")

Trunk Lock Module [4DR]

1.	Remove the trunk lid latch. (Refer to Body - "Trunk Lid Latch")

Tailgate Lock Module [5DR]

1.	Remove the tailgate lid latch. (Refer to Body - "Tailgate Latch")

Trunk Lid Handle [4DR]

1.	Disconnect the negative (-) battery terminal.

2.	Remove the trunk lid trim. (Refer to Body - "Trunk Lid Trim")

3.	Remove the inside rear combination lamp. (Refer to Lighting System - "Rear Combination Lamp")

4.	Disconnect the connector (A) and then remove the trunk lid back panel (C) by loosening the nuts (B).

5.	Disconnect the connector (A) and then remove the rear view camera&trunk lid handle assembly (B) after loosening the screws.

6.	Remove the rear view camera (A) by loosening the screw from the trunk lid handle (B).

Tailgate Lid Handle [5DR]

1.	Disconnect the negative battery terminal.

2.	Remove the tailgate back panel (Refer to Body - "Tailgate Back Panel")

3.	Loosen the tailgate garnish bracket mounting screws.

Remove the tailgate garnish bracket (B) by pushing the retaining hooks (A) in the direction of the arrow.

Be careful not to damage the retaining hooks (A).

5.	Disconnect the rear view camera connector (A).

6.	Remove the license plate lamp socket (A) by rotating it in the counterclockwise. [LH] [RH]

7.	Remove the tailgate garnish back panel (A) after loosening the mounting screws.

8.	Disconnect the tailgate lid handle connector (A).

9.	Remove the rear view camera & tailgate lid handle assembly (A) after loosening the mounting screws.

10.	Loosen the rear view camera (A) mounting screws.

11.	Remove the rear view camera (A) from the tailgate lid handle (B).

Hood Switch

1.	Remove the hood latch. (Refer to Body - "Hood Latch")

Burglar Horn

1.	Disconnect the connector (A) and remove the burglar horn (B) by loosening the bolt.

2.	Install in the reverse order of removal.

Installation

1.	Install in the reverse order of removal.

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