Kia Sedona: Troubleshooting - Smart Tailgate System - Body Electrical System - Kia Sedona YP Service ManualKia Sedona: Troubleshooting

Third generation YP (2014-2020) / Kia Sedona YP Service Manual / Body Electrical System / Smart Tailgate System / Troubleshooting

Failure Inspection
Inspection and Test – Smart Tailgate System
Smart Tailgate system is a complex system consists of many components. To get an accurate test and result, the control module of the Smart Tailgate must be inspected.
The most trustworthy, effective and accurate method is using GDS required by smart tailgate.
GDS helps the technician in case of inspecting a switch which he or she cannot use, and enables to check the current status record of the switch of Smart Tailgate control module.
The battery must be fully charged before conducting all of the test on smart tailgate, and all of the interfering elements of the system must be shown and understood. (refer to the explanation of smart tailgate) Refer to the analysis reference table when inspecting and testing the smart tailgate.
Status
Cause
Solution
Sudden opening of tailgate
Activation by mistake or malfunction of open/close switch
Check for short or malfunction of short circuit of switch
Latch assembly failure
Check for wiring connection
Check for failure code, and replace the latch if needed
Failure of Smart Tailgate or the body control module
Reset the module fuse or reconnect the battery, if it does not operate properly, check the wiring connection and analyzing manual.
Unable to power open and close the tailgate
False indication, or not parked status
Check a switch status using analyzing device
Low voltage of the Smart Tailgate module battery
Check for proper voltage of the Smart Tailgate
Battery charged
Swelling of the fuse
Check if the fuse is swollen
Malfunction of STG spindle
Check for STG spindle status
Critical code failure at BCM/tailgate control module
Check for code status using GDS
Latch assembly failure
Check if the wiring connection of fuse is swollen
Check if there''s any alien object interfering with the operation of latch assembly.
Unable to open and close of the tailegate
Failure in motor assembly
Check for motor assembly
Interference of the consisting components
Replace the needed parts or reset the affected position.
Wiring problem (system or vehicle)
Resolve the problem using the wiring map.
Refer to wiring diagram.
Loss of electricity during the tailgate operation
Wiring problem (system or vehicle)
Resolve the problem using the wiring map.
Refer to wiring diagram.
Low voltage of vehicle battery
Check for proper voltage of STGM.
Charge the battery
Failure in Smart Tailgate or BCM
Check for failure code using analyzing device
Failure in motor assembly
Test a motor assembly
Power latching unable at Primary/Secondary position
Latch assembly failure
Check if the wiring connection of fuse are swollen.
Check for failure code using analyzing device
Resolve the problem using a vehicle analyzing manual.
Replace the latch assembly if needed.
Interference of the consisting components
Replace the needed parts or reset the affected position.
Failure in Smart Tailgate or BCM
Check for failure code using analyzing device
Excessive sealing force of the tailgate
Check for shock on sealing, assembly failure, alien object or other possible factors.
Failure in motor assembly
Check for a motor assembly
Unable to unlock the latch at Primary position
False indication, or not parked status
Check a switch status using analyzing device
Low voltage of the Smart Tailgate module battery
Check for proper voltage of the Smart Tailgate
Battery charged
Swelling of the fuse
Check if the fuse is swollen
Latch assembly failure
Check a switch status using analyzing device
Check for alien object interfering with the latch assembly operation or shock on components.
Resolve the problem using a vehicle analyzing manual.
Remove the latch assembly if needed.
Failure in outside handle connection
Check for handle joint and wiring connection.
Failure of Smart Tailgate or the body control module
Check for the failure code or cycle using analyzing device.
Interference of the consisting components
Replace the needed parts or reset the affected position.
Tailgate operation using pop/console switch unavailable.
Swelling of the fuse
Check if the fuse is swollen
Low voltage of STGM
Check for proper voltage of STGM.
Charge the battery
Unable to unlock the electric lock
Failure on the latch assembly
Check for alien object interfering with the latch assembly operation or shock on components.
Check for the failure code or cycle using analyzing device.
Check for pole/latchet switch using analyzing device.
Resolve the problem using the vehicle inspection manual
Unable to unlock the electric lock
Failure of Smart Tailgate module
Resolve the problem using the vehicle inspection manual
Failure of Body Control Module (BCM)
Resolve the problem using the vehicle inspection manual
Replace BCM if needed
Malfunctioning of wireless remote control key
Rewrite the wireless remote control key program
Replace the wireless remote control key
Malfunctioning of the tailgate motor assembly
Check for alien object interfering with the motor assembly operation.
Check for wiring connection
Change the assembly if motor clutch is not operable
Replace the switch if the full opening switch is not working
Resolve the problem using the vehicle inspection manual
Replace the motor if needed
Unable to maintain opened status of the tailgate
Failure on STG spindle
Replace STG spindle
Check if attached objects are damaged
Excessive operating force when opening and closing
Failure on STG spindle
Replace STG spindle
Check if attached objects are damaged
Interference of the consisting components
Replace the needed parts or reset the affected position.
When tailgate keeps cinshing in lock mode
Failure on the latch assembly
Check if wiring connection and fuse are swollen
Check the switch with analyzing device
When tailgate stays in electric lock mode
Failure on the latch assembly
Check for wiring connection
Check for any alien object
Resolve the problem using the vehicle inspection manual
Malfunctioning of the control module
Check for failure code using analyzing device
Wiring problem (system or vehicle)
Resolve the problem, referring an electric circuit
Refer to wiring diagram.
Check for the vehicle inspection manual for detailed process
Failure of the motor assembly
Check for operating environments constantly
Wiring problem (system or vehicle)
Resolve the problem, referring an electric circuit
Refer to wiring diagram.
Very slow opening of the tailgate
Voltage of vehicle battery is too low
Check for proper voltage of STGM.
Charge the battery
Malfunctioning of the tailgate STG spindle
Replace the tailgate STG spindle if needed
Interference of the consisting components
Replace the needed parts or reset the affected position.
Too steep angle of a vehicle for electric operation
Operate the tailgate manually
Malfunctioning of the tailgate motor assembly
Replace the motor assembly if needed
Rattling or squeaky sound
Alien object jammed in tailgate components
Remove the alien object
Excessive tightening or loosening of the components
Resolve the excessive tightness or looseness

Description and Operation
Description Smart Tailgate system is an electro-mechanical system that can open and close the tailgate automatically, by using local switch (overhead console switch, push button switch inside o ...

Smart Tailgate Unit Components and Components Location
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