Hyundai Equus: Description and Operation
Second generation VI (2009–2025) / Hyundai Equus VI 2009-2025 Service Manual / Body Electrical System / Power Door Locks / Description and Operation
Second generation VI (2009–2025) / Hyundai Equus VI 2009-2025 Service Manual / Body Electrical System / Power Door Locks / Description and Operation
| Description |
System Overview
The larger the size of the door, the harder it is to close
it. Quite often we see people driving with a door not completely closed.
Power door latch addresses the issue of partially closed
doors. The system is featured on all four doors and closes partially
shut doors without any assistance from the driver/passenger.
Commonly, partial door closure is known as 1st closure and full door closure is known as 2nd closure.
| - |
Featured on all four doors. |
| - |
Consists of a door lock actuator and a soft closing actuator. |
| - |
Locks/unlocks doors using DDM and ADM signals. |
System Structure
Following is a diagram of the driver’s side door lock and
power latch units. DDM monitors power door latch lock/unlock activation
power and switch statuses (lock/unlock switch and door key switch), and
the power latch feature is signal-operated.
Latch & Actuator
Known collectively as the door lock actuator and as the part where the striker lands when the door is closed.
| 1. |
Latch
Identical in design to conventional latches and contains an
SCA cable that supplies the power needed to close partially closed
doors. |
| 2. |
Actuator
Contains a door lock/unlock control motor, a lock/unlock
detection switch, and a door key detection switch. Power door latch
actuators also feature a pawl switch and an ajar switch that communicate
with SCA. |
SCA (Soft Closing Actuator)
SCA utilizes its P/C motor to completely close partially closed doors.
| 1. |
ECU
ECU controls SCA by monitoring the ajar and pawl switches and
determining whether or not to engage the power latch feature. ECU is
built on a PCB inside SCA. |
| 2. |
P/C Motor
Upon receiving a signal from the ECU, the P/C motor rotates
to pull the door shut and then rewinds to standby for the next
activation signal. |
| 3. |
Hall Sensor
The hall sensor is mounted to the PCB and determines the
power latch’s initial position by sensing the location of a magnet
that’s attached to the gear. |
Power Door Latch Switch
The power door latch feature must first determine if the door
is completely shut or partially shut. This is accomplished by a switch
located inside the latch (door lock actuator) and a body electrical
switch.
| 1. |
Ajar Switch
The word “ajar” means slightly open, and the ajar switch
determines whether the striker has completely engaged the latch when the
door is shut. This switch is mounted inside the door latch and is
triggered by an internal link. The switch’s function reaches a full
cycle as the signal goes from On to Off.
And, because the switch is mounted inside the actuator, it’s not possible to inspect the switch individually.
To test, use the external connector and measure the voltage change. |
| 2. |
Pawl Switch
The pawl switch is triggered when the door is partially shut,
activating the power door latch feature until the switch sends an off
signal. Like the ajar switch, the pawl switch is installed inside the
actuator and must also be tested using the external connector. |
| 3. |
Ajar & Pawl Switch Activation
These switches have the following activation scheme:
|
Components and Components Location
Component Location
1. DDM (Driver Door Module)2. ADM (Assist Door Module)3. IPM (Instrument Panel Module)4. Door lock knob5. Trunk lid actuator6. Front door lock actuator7. Rear door lock actuato ...
Power Door Lock Actuators Repair procedures
Inspection
Front Door Lock Module Inspection
1.
Remove the front door trim.
(Refer to Body - "Front Door Trim")
2.
Remove the front door module.
(Refer to Body - "Front Door Module")
3.
...
See also:
Smart key precautions
The smart key will not work if any of the following occur:
- The smart key is close to a radio transmitter such as a radio station or an
airport which can interfere with normal operation of th ...
Solenoid Valve Components and Components Location
Components
1. Connected to air tube2. Bracket3. Connector
...
Rear-Facing child restraint
WARNING
NEVER install a child or infant restraint in the front passenger's seat. Placing
a rear-facing child restraint in the front seat can result in SERIOUS INJURY or
DEATH if the child ...
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