Hyundai Equus: Description and Operation
Second generation VI (2009–2024) / Hyundai Equus VI 2009-2024 Service Manual / Body Electrical System / Power Trunk Module / Description and Operation
Second generation VI (2009–2024) / Hyundai Equus VI 2009-2024 Service Manual / Body Electrical System / Power Trunk Module / Description and Operation
| Description |
Power Trunk Lid (PTL) System : It is automatically opens and
closes a vehicle’s trunk lid and cinches the latch with the press of a
button, and also can be easily operated, using an interior switch or a
remote keyless entry device.
Trunk Position And Direction
The PTL System will measure the Trunk Position via a
integrated hall sensor inside the drive unit motor. The moving direction
of trunk lid will be detected by analyze the current direction of the
motor. The hall sensor counting (position detection) is active during
power operation mode and during manual mode.
Drive motor power control
The drive motor power will be controlled by using a PWM
(power motor) with a frequency of 20 kHz. Depending on the expected and
the actual trunk lid speed, the ECU will adjust the power motor to
achieve the requested opening and closing speed.
Trunk speed control
For controlling the trunk lid speed overcoming aging,
temperature effects and vehicle inclination a regulation is included.
The regulation is comparing the actual motor speed with the requested
motor speed. Depending on the comparison result, the speed will be
adjusted, buy increasing or decreasing the power motor.
System Components
| 1. |
PTL Drive Unit (A).
Power trunk lid drive unit consists of motor & driven gear, PTL module, PTL motor and drive arm.
PTL drive unit is located in rear left trunk trim. PTL drive unit opens and closes the trunk connected push rod automatically. |
| 2. |
Power latch (A)
Trunk opened by actuator after releases of latch’s lock.
Built in the Micro switch for monitoring the latch lock & unlock status. |
| 3. |
Power Striker
By using actuator cinching the striker to go down strongly when the trunk is closed by motor.
Built in the micro switch for monitoring the striker’s position. |
| 4. |
SMK(Smart key)
Push the power trunk lid open of the SMK more than 0.1s to
open the power trunk. Power Open operation shall be reversed when an
additional Open/Close signal is received during power opening. |
| 5. |
Trunk inner switch (A)
|
| Operation |
PTL Operating Flow (Trunk Open)
Operating flow: Trunk Open
| 1. |
Opening can be triggered receiving a signal from followings.
(Trunk outside handle S/W, Crash pad S/W (Push), SMK trunk open button) |
| 2. |
Power striker actuator will move the striker shaft by 6mm. (Full Close > Pop up) |
| 3. |
Release the locked E-latch. |
| 4. |
PTL module controls the driving motor, sector gear, push rod in order to open. |
| 5. |
The rotating speed of motor can be measured by Hall sensor which is built in motor.
|
| 6. |
Opening angle of trunk is calculated by counting the input pulse signal from Hall sensor.
x When PTL decides that motor restriction is caused by an
obstruction while opening the trunk lid, it stops after operating 50mm
repulsive movement. |
PTL Operating Flow (Trunk Close)
Operating flow: Trunk Close
| 1. |
Closing can be triggered receiving a signal from followings.
(Trunk trim S/W, Crash pad S/W (Push) > It works while it is being pushed only. |
| 2. |
PTL module controls the driving motor, sector gear, push rod in order to close. |
| 3. |
Closing angle of trunk is calculated by the input pulse signal from Hall sensor. |
| 4. |
The rotating speed of motor can be measured by Hall sensor which is built in motor.
x If motor has restriction force during closing, it may be opened by repulsive force |
| 5. |
E-Latch contacts with the power striker shaft, and then E-Latch is locked mechanically. (Unlock > Lock) |
| 6. |
PTL module makes stop the PTL motor operation after detecting the E-Latch’s lock signal. |
| 7. |
Power striker actuator works and then make shaft position to move by 6mm. (Pop up > Full Close) |
PTL Operation Logic
(Y: Operation, N: No operation, - : NA)
| CAN Communication Data | Trunk O/S handle Switch | Trunk Trim Switch | Crash pad Switch (OPEN) | Crash pad Switch (CLOSE) | RKE | |||
| Vehicle Speed | KeyStatus | Door condition | Anti-theft | |||||
| Stop | ACC or IG ON | AllLOCK | ARM | - | - | - | - | - |
| DISARM | N | Y | Y | Y | N | |||
| One Door UNLOCK | ARM | - | - | - | - | - | ||
| DISARM | Y | Y | Y | Y | N | |||
| IGOff | AllLOCK | ARM | N | Y | Y | Y | Y | |
| DISARM | N | Y | Y | Y | Y | |||
| One Door UNLOCK | ARM | - | - | - | - | - | ||
| DISARM | Y | Y | Y | Y | Y | |||
| Driving | IG ON | AllLOCK | ARM | N | N | N | N | N |
| DISARM | N | N | N | N | N | |||
| One Door UNLOCK | ARM | - | - | - | - | - | ||
| DISARM | N | N | N | N | N | |||
The table in the slide is to explain the operation of power
trunk lid considering all cases of vehicle speed, anti-theft status,
door condition and key status. As it is mentioned previously, some of
the PTL switch is available to open and close but some of them is only
for close.
Vehicle speed: Stop or Driving
This is based on the vehicle speed signal; if the vehicle
speed is lower than 3kph, it will be assumed as a ‘vehicle stop’. If
the vehicle speed is over 3kph, it is the ‘vehicle driving’
condition.
Key Status: If the ignition is inserted into the ignition cylinder (without PIC).
Door condition: Be sure that its condition is only for lock or unlock status. Don’t confuse with the door open or close.
Some conditions cannot be occurred actually so that the case
was expressed by the symbol of ‘-’ (NA) in the table. Also when the
vehicle is running (’vehicle driving’), there is no meaning to think
the case of ‘Key Out’ so that those cases were eliminated in the
table.
PTL Operation Logic (Safety & Anti Theft)
| Section | Vehicle Status | Operation Mode |
| Safety | 1. Vehicle driving condition | - Possible to open & close while stop only. : Vehicle speed is lower than 3x/h. |
| 2. Detect an obstacle during operation (Motor restraint) | - During Open : Closed by 50mm after stop - During Close : Fully opened | |
| 3. Switch on during operation | - Stop operation immediately | |
| 4. Engine cranking during operating | - Stop operation immediately | |
| Anti-Theft | 1. In case of valet parking | - Turn off the trunk main switch in the glove box : Impossible to open & close by motor |
| 2. All door lock or pre arm mode status | - Impossible to open by the trunk outside handle | |
| 3.By using RKE, open a trunk under the pre arm mode (ARM HOLD) | - Hazard lamp blinks 3 times for warning open & close the trunk. |
| - |
When PTL decides that motor restriction is caused by an
obstruction at opening the trunk lid, it stops after operating 50mm to
the reverse direction. If motor has restriction force at closing, it may
be opened fully by repulsive force. |
| - |
PTL can be operated at the speed of less than 3Km/h. When
trunk is opened and closed after entering into ARM WAIT, the emergency
lamp will blink 3 times. |
Using the scan tool, the self-diagnose and input/output for sensor and actuator data can be inspected.
Components and Components Location
Component Location
...
Repair procedures
Inspection
System Parameterization
Parameterization of the system has to be performed to find
the amount of pulses needed to open the trunk. Due to tolerances not
every car is equal. Therefore ...
See also:
Horn
To sound the horn, press the area indicated by the horn symbol on your steering
wheel (see illustration). The horn will operate only when this area is pressed.
CAUTION
Do not strike the horn s ...
ON/OFF Solenoid Valve Specifications
Specifications
ON/OFF Solenoid Valve
x Control type : Normal low type
Control pressure kpa (kgf/cmx, psi)539.36(5.5, 78.23) Internal resistance(x)10~11
...
Components and Components Location
Components (1)
1. Main crash pad assembly2. Crash pad side cover [LH]3. Crash pad side cover [RH]4. Crash pad under cover [LH]5. Crash pad lower panel
Components (2)
1. Main crash pad assem ...
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