Kia Sedona: Troubleshooting
Third generation YP (2014-2024) / 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
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