Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Central Door Lock Function
2003 Hyundai Tiburon V6-2.7LSECTION Central Door Lock Function
CENTRAL DOOR LOCK
1. Function explanation: When lock/unlock knob of driver side is controlled, passenger side interlocks. If the passenger side knob is controlled, driver side interlocks also.
2. Related schematic diagrams
- See the Power Door Locks.
3. Input/output signal
- Fuse : F24 (15 A)
- Input : Driver's side door lock switch (E8), passenger side door lock switch (E3)
- Output: Door lock (F6), Door unlock (F8)
4. Related Hi-scan(pro) failure diagnosis
1. Input/output monitoring
Select "05.LOCK & FOLDING" and press [ENTER]. Then, the following screen will be displayed.
Check BCM input/output state against driver's side door lock switch, passenger side door lock switch, door lock, door unlock.
2. Actuator inspection
1. Select "01.INPUT ACTUATION" and press [ENTER].
Drive compulsorily driver's side door lock/unlock switch, passenger side door lock/unlock switch.
2. Select '02 OUTPUT ACTUATION" and then press [ENTER] Perform forced drive against door lock and door unlock.
5. Expected failure symptoms
1. Lock function works but unlock function does not.
2. Unlock function works but lock function does not.
3. When lock/unlock knob of passenger side is controlled, driver side interlocks But when the driver side knob is controlled passenger side does not interlock.
4. When passenger side knob is controlled, driver side does not interlock.
5. Both sides do not interlock.
6. Actions by the failure symptoms
1. Lock function works but unlock function does not interlock.
=> Since PCB integrated relay is fail, replace the BCM.
2. Unlock function works but lock function does not interlock.
=> Since PCB integrated relay is fail, replace the BCM
3. When passenger side knob is controlled, driver side interlocks, but when driver side knob is controlled, passenger side knob does not interlock.
4. When passenger side knob is controlled, driver side interlocks But when the driver side knob is controlled, passenger side does not interlock
5. Both sides do not interlock either.
1. Function explanation: When lock/unlock knob of driver side is controlled, passenger side interlocks. If the passenger side knob is controlled, driver side interlocks also.
2. Related schematic diagrams
- See the Power Door Locks.
3. Input/output signal
- Fuse : F24 (15 A)
- Input : Driver's side door lock switch (E8), passenger side door lock switch (E3)
- Output: Door lock (F6), Door unlock (F8)
4. Related Hi-scan(pro) failure diagnosis
1. Input/output monitoring
Select "05.LOCK & FOLDING" and press [ENTER]. Then, the following screen will be displayed.
Check BCM input/output state against driver's side door lock switch, passenger side door lock switch, door lock, door unlock.
2. Actuator inspection
1. Select "01.INPUT ACTUATION" and press [ENTER].
Drive compulsorily driver's side door lock/unlock switch, passenger side door lock/unlock switch.
2. Select '02 OUTPUT ACTUATION" and then press [ENTER] Perform forced drive against door lock and door unlock.
5. Expected failure symptoms
1. Lock function works but unlock function does not.
2. Unlock function works but lock function does not.
3. When lock/unlock knob of passenger side is controlled, driver side interlocks But when the driver side knob is controlled passenger side does not interlock.
4. When passenger side knob is controlled, driver side does not interlock.
5. Both sides do not interlock.
6. Actions by the failure symptoms
1. Lock function works but unlock function does not interlock.
=> Since PCB integrated relay is fail, replace the BCM.
2. Unlock function works but lock function does not interlock.
=> Since PCB integrated relay is fail, replace the BCM
3. When passenger side knob is controlled, driver side interlocks, but when driver side knob is controlled, passenger side knob does not interlock.
4. When passenger side knob is controlled, driver side interlocks But when the driver side knob is controlled, passenger side does not interlock
5. Both sides do not interlock either.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.