Kia Forte BD Quiz
Body Electrical System

Keyless Entry and Theft Alarm System

In this manual: Body Electrical System
General Information — 8Maintenance — 32Engine Mechanical System — 47Engine Electrical System — 17Emission Control System — 10Engine Control System/Fuel System — 32Clutch System — 11Manual Transmission — 11DCT (Dual Clutch Transmission) System — 16Drive Shaft and Axle — 8Suspension System — 26Steering — 9Restraints — 11Brake System — 27Body (Interior and Exterior) — 119Body Electrical System — 98Heating, Ventilation, and Air Conditioning — 27
75steps
~450min
4/5difficulty
Done 0 of 75

Specifications

Specification

Item Specification
Power Supply 3 V
Operating Temperature 14–140°F (-10–60°C)
RF Modulation FSK
LF Modulation REQUEST
RF Frequency 433.92 MHz
Button Number 3
Function Lock
Door Unlock
Unlocking the Trunk

Components and Component Location

Components

[4DR]

1. Hood switch
2. Theft alarm horn
3. Integrated Body Control Unit (IBU)
4. Door lock/unlock buzzer		 5. Front door actuator and switch
6. Rear door actuator and switch
7. Trunk actuator and switch

[5DR]

1. Hood switch
2. Theft alarm horn
3. Integrated Body Control Unit (IBU)
4. Door lock/unlock buzzer		 5. Front door actuator and switch
6. Rear door actuator and switch
7. Trunk actuator and switch

Description and Operation

Description

Security Alarm Status [B/A Status]

B/A Status Description
DISARM

  1. This is the state when the ARM mode is OFF.

  2. If all doors, the hood, or the trunk are open, the alarm does not sound.

  3. The security indicator keeps flashing with the ignition off, and stays on in ACC ON.
PREPARATION

  1. If the IBU receives lock signals from the remote control or the passive lock (Smart Key specification) or the driver's seat door lock with key, and the "ARM WAIT" conditions are met, the IBU waits 30 seconds after the "All Doors Closed" signal is output before entering the "ARM WAIT" mode.

  2. During the 30-second "ARM WAIT" mode, the alarm does not sound and the "ARM" mode is canceled, even if intrusion occurs.

  3. Under no circumstances can the "ARM" mode be entered directly without passing through the "ARM WAIT" mode.

  4. The security indicator remains on during the 30-second "ARM WAIT" mode.

※ Note: For a vehicle equipped with the Smart Key System, the same process applies to the passive door lock function.

B/A Status Description
AUTO LOCK TIMER 1

  1. This is a similar RELOCK (automatic relock) function after 30 seconds.

  2. If the UNLOCK button on the remote control is pressed when the "ARM WAIT" conditions are met, or in the "ARM" mode all doors are unlocked and then a timer set to 30 seconds starts.

  3. After 30 seconds, the IBU automatically cancels the all-door lock signal and enters the "ARM WAIT" mode.

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

  5. If the driver accidentally presses the UNLOCK button, this security function allows the vehicle to enter the "ARM" mode after 60 seconds.

  6. The security indicator continues to flash during the AUTO LOCK TIMER 1 process.

※ Note: For a vehicle equipped with the Smart Key System, the same process applies to the passive door lock function.

B/A Status Description
AUTO LOCK TIMER 2

  1. This has the same purpose as AUTO LOCK TIMER 1, but the operating conditions are different.

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

  3. However, after 30 seconds, it is not possible to enter the "ARM WAIT" mode because the hood or trunk is open (the "PRE ARM" mode is maintained).

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

  5. During AUTO LOCK TIMER 2, the security indicator keeps flashing.

※ Note: For a vehicle equipped with the Smart Key System, the same process applies to the passive door lock function.

B/A Status Description
PREARM 1-1. This is the state immediately before entering the "ARM" mode after AUTO LOCK. Timer 2 is completed and all doors are closed.
1-2. If the driver closes the hood or trunk, the alarm flashes once and then the vehicle automatically enters the "ARM" mode via the "ARM WAIT" mode.
2-1. If the LOCK button is pressed when at least one of the doors, the hood, or the trunk is open, the "PRE ARM" mode is activated.
2-2. Since the all-door lock signal is output but the conditions for "ARM WAIT" are not satisfied, the vehicle remains in the standby state and enters the ARM mode via the ARM WAIT state as soon as the open door is closed.
2-3. If an intrusion is detected in the PRE ARM mode, the alarm is activated. DISARM mode.
2-4. The security indicator continues to flash in the PRE ARM mode.

B/A Status Description
RE ARM

  1. In the "RE ARM" state, if an intrusion into the vehicle is detected, the alarm flashes and the horn is activated again, and the state changes to the ALARM mode.

  2. The security alarm state changes to the RE ARM mode after the 27-second timer has expired.

  3. The security indicator continues to flash.

B/A Status Description
AUTO LOCK TIMER 3

  1. The B/A state changes to "AUTO LOCK TIMER 3" when the TX-Trunk command is operated.

  2. The B/A state changes "AUTOLOCKTIMER3" to "ARMWAIT" when the "30 sec." timer expires after all doors are locked and closed.

  3. The B/A state changes "AUTOLOCKTIMER3" to "DISARM" when any door is opened.

  4. In the "AUTO LOCK TIMER 3" state, the "30 sec." timer operates. If this timer expires, the state changes to the "PRE ARM" state with the trunk open.

  5. In this state, the security indicator continues to flash.

B/A Status Description
ARM HOLD
(Alarm Hold: Trunk)
※ Variant without PTL

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

  2. If the trunk is opened from the remote (including the smart key) in the ARM mode, the vehicle enters the ARM HOLD mode, in which the security alarm holds only for the open trunk.

  3. While the trunk is closed, the ARM HOLD mode is maintained without interruption.

  4. When the open trunk is closed, the 30-second timer starts. During the 30 seconds of the ARM mode, the security alarm is triggered. It does not turn off if the trunk is opened.

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

  6. During ARM, the ARM mode of the doors and hood is maintained. Therefore, if an intrusion is detected through any door or the hood, the security alarm is triggered. It does not turn off normally.

  7. The security indicator continues to flash in the ARM HOLD mode.

Note 1: ARM HOLD is a mode that delays activation of the ARM mode for the linkage line only. In ARM HOLD mode, the ARM mode applies to the doors and hood.

Note 2: When the ignition key is used to open the trunk, the ARM HOLD function operates in the same way, provided that the "Key Alarm" function is enabled. If this is disabled, the key-based ARM HOLD is disabled and opening the trunk with the key is determined to be theft and an alarm is triggered.

B/A Status Description
RE ARM
(ARM mode re-enabled)

  1. If the door, hood and trunk are all closed after ALARM mode ends, this means ARM mode is turned on again.

  2. During this time, the drive state (door locking/unlocking) is ignored and the ARM mode is maintained until a remote control signal is received (normal ARM mode).

  3. In this mode, the security indicator continues to flash.
RESET

  1. When the battery is disconnected in the ALARM or RE ARM mode, the RESET mode is activated.

  2. When the battery is connected after RESET, the anti-theft alarm operation resumes. (Instead of the remaining output, the 27-second ON / 10-second OFF cycle is repeated three times.)

B/A Status Description
KEY ON 30-second deactivation
(non-smart key version)

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

  2. Even before 30 seconds have passed, if the engine starts (generator "L" terminal voltage high: sent from the cluster module over CAN data), the anti-theft alarm is deactivated immediately. (Without ignition lock: The immobilizer system is applied as the primary function, so the ignition system is normally controlled by the registered immobilizer key during alarm.)

    ※ For a vehicle with an electronic key, the alarm is deactivated immediately after smart key authentication.
When ARM mode is enabled, opening the trunk and central door unlocking are not allowed.

  1. From the moment the vehicle enters the ARM WAIT mode by activating the all-door lock with the remote control or smart key, the central door unlock switch, the internal trunk unlock switch, and the DDM and ADM (driver and passenger seat window switches) are disabled. (Theft prevention)

    ※ This function applies equally to the ARM WAIT / ARM / ALARM / RE ARM modes.

Repair Procedures

Inspection

Front Door Lock Module

  1. Remove the front door trim panel.

    (Refer to Body - "Front Door Trim Panel")

  2. Remove the front door module.

    (Refer to Body - "Front Door Module")

  3. Disconnect the connector from the door lock actuator.

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

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

Rear Door Lock Module

  1. Remove the rear door trim.

    (Refer to Body - "Rear Door Trim Panel")

  2. Remove the rear door module.

    (Refer to Body - "Rear Door Module")

  3. Disconnect the connector from the door lock actuator.

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

  4. Check the actuator operation by connecting power and ground as shown below. To avoid damaging 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 lock.

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

Rear Door Lock Module [5DR]

  1. Remove the trunk lid trim panel.

    (Refer to Rear Door - "Rear Door Trim")

  2. Disconnect the connector from the trunk lid lock.

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

Trunk Lid Handle [4DR]

  1. Check the circuit between the terminals for continuity.

Trunk Lid Handle [5DR]

  1. Remove the trunk lid trim panel.

    (Refer to Rear Door - "Rear Door Trim")

  2. Check the circuit between the terminals for continuity.

Hood Switch

  1. Check the circuit between the terminals for continuity.

Burglar Horn

  1. Check the horn by connecting battery power to terminal 2 and grounding 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 liftgate latch.

    (Refer to Body - "Rear Door Latch")

Trunk Lock Module [4DR]

  1. Remove the trunk lid lock.

    (Refer to Body - "Trunk Lid Latch")

Rear Door Lock Module [5DR]

  1. Remove the luggage compartment lid latch.

    (Refer to Body - "Rear Door 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 light.

    (Refer to Lighting System - "Rear Combination Light")

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

  5. Disconnect the connector (A), then remove the rear view camera and luggage compartment door handle assembly (B) after loosening the screws.

  6. Remove the rear view camera (A) by removing the luggage compartment door handle mounting screw. Remove the door handle (B).

Trunk Lid Handle [5DR]

  1. Disconnect the negative battery cable.

  2. Remove the rear door trim panel.

    (Refer to Body - "Rear Door Trim Panel")

  3. Loosen the rear door garnish bracket mounting screws.

  4. Remove the rear door garnish bracket (B) by pressing the retaining hooks (A) in the direction of the arrow.

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

  6. Remove the license plate lamp socket (A) by turning it counterclockwise.

    [LH]

    [RH]

  7. Remove the luggage compartment door rear garnish panel (A) after loosening the mounting screws.

  8. Disconnect the luggage compartment door handle connector (A).

  9. Remove the rear view camera and luggage compartment door handle assembly (A) after loosening the mounting screws.

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

  11. Remove the rear view camera (A) from the luggage compartment door handle (B).

Hood Switch

  1. Remove the hood latch.

    (Refer to Body - "Hood Latch")

Burglar Horn

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

  2. Install in the reverse order of removal.

Installation

  1. Install in the reverse order of removal.

Test yourself

A quick Kia Forte BD quiz: every answer comes with an explanation and a link to the manual page.