Kia Sorento: Operation - Power Tailgate Module - Body Electrical System - Kia Sorento XM 2011-2024 Service ManualKia Sorento: Operation

Second Generation XM (2011-2024) / Kia Sorento XM 2011-2024 Service Manual / Body Electrical System / Power Tailgate Module / Operation

Power Tailgate Opening

** - Primary switch signal received by PTGM via CAN bus (sent by IPM)
PTGM Opening procedure:
Opening can be triggered after a signal is received from, driver-console switch, outside handle switch, remote Key (FOB)
The latch will be released (by IPM) by actuation of latch motor.
On latch release, the tailgate latch pops out of the striker.
PTG module controls the tailgate motor in order to open the tailgate.
Opening angle of the tailgate is calculated by counting the input pulse signals from Hall sensor.
When the motor movement is restricted, the PTGM stops the tailgate motor movement due to obstacle detection.
Power Tailgate Closing

PTGM Closing procedure:
Closing can be triggered after receiving a signal from, console (driver) switch, ouside handle switch, remote key (FOB), inner switch
PTG module controls the tailgate motor in order to close the tailgate
Closing angle of the tailgate is calculated by counting the input pulse signlas from hall sensor
The tailgate latch engages with the striker and the latch is locked mechanically (Latch unlock → Latch lock)
PTGM stops the tailgate motor operation after detecting the tailgate latch's secondary signal
On detecting the latch's secondary signal, the power close unit (PCU) starts the contract (cinch) operation and stops after the latch lock signal is detected
After contract operation is stopped, PCU is rewound until the PCU home position is reached
The tailgate is completely closed and latch is fully locked
Learned/Calculated/Programmed positions

Maximum Point for Opening
Above this position a start in opening direction could make the tailgate move beyond the Maximum Basic Position and overload the mechanical system (hinges).
Therefore the start of an opening action above this point is disabled.
Anyway the tailgate moves beyond this point, if it has been started at a lower position.
Learned Mechanical End Position
This is the mechanical block position while opening and is considered to be 100% opening. During the first tailgate opening this position is learned.
After learning, the tailgate will not move beyond the Maximum Basic Position, which is defined by the Learned Mechanical Position – Security Distance.
All positions are defined by parameters in the ECU or programmed by the user (Basic Programmed Position)
Programming the max. T/gate opening (Garage Position)
The customizable Programmed Basic Position is set equal to the Maximum Basic Position after the Learned Mechanical End Position is learned.
The customer can change the Programmed Basic Position to any new position between the Maximum Point For Closing and the Maximum Basic Position.
If the customer wants to set a new Programmed Basic Position below the actual Programmed Basic Position, he has to move the tailgate electrically or manually to the new position and has to push the Inner Switch for e.g. 3 seconds (time can be modified by parameter)
If the customer wants to set a new Programmed Basic Position above the actual Programmed Basic Position he has to move the tailgate manually to the new position and has to push the Inner Switch for 5 seconds (time can be modified by parameter)
If the user tries to program a tailgate position above the Maximum Basic Position, the ECU will set the Programmed Basic Position to the Maximum Basic Position.
System Parameterization
Due to mechanical tolerances and adjustments in vehicle production and assembly the power operated tailgate needs calibration of the maximum movement range before proper operation can be ensured.
The tailgate’s maximum movement range is represented by the number of Hall-pulses received by the ECU from the actuators’ speed / position sensors during a tailgate movement from the fully closed position (closure unit in fully latched position) to the upper end position limited by mechanical constraints (e.g. upper bump stops, spindle length or similar).
Calibration Mode

Manual De-calibration Mode

System Initialization
System initialization is necessary to identify the Tailgate closed (0-Position) position.
After a Battery Power-on reset, an initialization process must be executed to find the full open and full closed Tailgate position. After successful initialization for Tailgate closed position and learning of the Tailgate full open position the normal Tailgate open and close operation can be ensured.
Procedure: Refer to "Calibration Mode".
Buzzer operation is defined in the following chart

T/gate start
2 times
2 times
When T/gate is triggered by Remote Contol or T/gate Console Switch
T/gate start
When T/gate is triggered by T/gate Inner Switch or T/gate Outer Handle Switch
T/gate stop

System error
3 Times
PCU/Tailgate antiplay active, 0ver-/undervoltage condition, Endposition-/position error, spindle error, CAN error, Latch closed when Tailgate open
T/gate not closed
10 times
10 times
Latch Lock Switch not present
During Calibration run
Continuous ON-OFF beeping
Activate buzzer but not C_PTHazard
Max. End Position learned
2 times
Buzzer confirms learning finished
Max. End Position deleted
1 time
Buzzer confirms “position deleted”
Car is moving with open T/gate
10 times
T/gate open AND Speed >3km/h
Garage Position saved
2 times
Buzzer confirms “New Garage Position”

*) Lamp will be synchronized by sending C_PTHazard simultaneously to Buzzer signal
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