Hyundai Palisade: Power Tailgate Module / Troubleshooting

Hyundai Palisade (LX2) 2020-2024 Service Manual / Body Electrical System / Power Tailgate Module / Troubleshooting

Failure Inspection
Diagnosis with Diagnostic tool
1.
In the body electrical system, failure can be quickly diagnosed by using the vehicle diagnostic system (Diagnostic tool).
The diagnostic system (Diagnostic tool) provides the following information.
(1)
Fault Code Searching : Checking failure and code number (DTC)
(2)
Data Analysis : Checking the system input/output data state
(3)
Actuation test : Checking the system operation condition
(4)
S/W Management : Controlling other features including system option setting and zero point adjustment
2.
If diagnose the vehicle by Diagnostic tool, select "DTC Analysis" and "Vehicle".

Hyundai Palisade. Troubleshooting

3.
Select the 'Data Analysis'.

Hyundai Palisade. Troubleshooting

4.
Select the 'PTG' to search the current state of the input/output data.

Hyundai Palisade. Troubleshooting

Hyundai Palisade. Troubleshooting

Mode Change (Power Tailgate System)
1.
After replacing with a new power tailgate module, check for DTC code at all times.
If DTC code B24B0 exists, perform power tailgate mode change.
2.
After connecting the Diagnostic tool, Select the 'S/W Management' and 'Car model'.

Hyundai Palisade. Troubleshooting

3.
Select the "Power Tailgate" and Power Tailgate Mode Configuration" procedure.

Hyundai Palisade. Troubleshooting

4.
Perform the "Power Tailgate Mode Configuration" procedure according to the Diagnostic tool screen message.
System Initialization
System initialization is needed to recognize the closing position of the tailgate to power tailgate module.
The initialization process after battery power reset, system initialization is needed to recognize the maximum opening and closing tailgate position exactly.
The power tailgate operates normally after system initialization is completed.
Procedure :

Hyundai Palisade. Troubleshooting

Inspection and Test - Power Tailgate System
Power Tailgate system is a complex system that consists of several components. To get an accurate test result, the control module of the Power Tailgate must be inspected.
The most trustworthy, effective and accurate method is using Diagnostic tool required by power tailgate.
Diagnostic tool helps technicians when inspecting a disabled switch, and enables to check the current status record of the switch ofPower Tailgate control module.
The battery must be fully charged before conducting all of the test on power 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 analyze 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 Power Tailgate module battery
Check for proper voltage of the Power Tailgate
Battery charged
Swelling of the fuse
Check if the fuse is swollen
Malfunction of PTG spindle
Check for PTG spindle status
Critical code failure at BCM/tailgate control module
Check for code status using Diagnostic tool
Latch assembly failure
Check if the wiring connection of fuse are 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 PTGM.
Charge the battery
Failure in Power Tailgate or BCM
Check for failure code using analyzing device
Failure in motor assembly
Test the 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 Power 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 the motor assembly
Unable to unlock the latch at Primary position
False indication, or not parked status
Check switch status using analyzing device
Low voltage of the Power Tailgate module battery
Check for proper voltage of the Power Tailgate
Battery charged
Swelling of the fuse
Check if the fuse is swollen
Latch assembly failure
Check 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 Power 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 PTGM
Check for proper voltage of PTGM.
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/latch switch using analyzing device.
Resolve the problem using the vehicle inspection manual
Unable to unlock the electric lock
Failure of Power 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 PTG spindle
Replace PTG spindle
Check if attached objects are damaged
Excessive operating force when opening and closing
Failure on PTG spindle
Replace PTG spindle
Check if attached objects are damaged
Interference of the consisting components
Replace the needed parts or reset the affected position.
When tailgate keeps cinching lock mode
Failure on the latch assembly
Check if wiring connection and fuse are swollen
Check the switch with analyzing device
When tailgate keeps 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
Vehicle battery voltage too low
Check for proper voltage of PTGM.
Charge the battery
Malfunctioning of the tailgate PTG spindle
Replace the tailgate PTG spindle if needed
Interference of the consisting components
Replace the needed parts or reset the affected position.
Vehicle angle too steep 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

    Inspection

    Inspection Tailgate normal operation transmit / receive process    • FOB key Switch : FOB key Switch → BMC / SMK → CAN communication → PTG Module • Driver Switch : Driver Switch → Wiring → PTG Module • Outer Switch : Outer Switch → Wiring → SJB → CAN communication → PTG Module ① Press the power tailgate open switch ② Transmit / receive power tailgate open signal via CAN communication and wiring ③ Power tailgate open    • The operation of the power tailgate is activated by mutual communication with the vehicle's module and switch...

    Power Tailgate Unit

    Components and components location Components Schematic diagrams Circuit Diagram Repair procedures Removal    1) After replacing with a new power tailgate module, check for DTC code at all times...

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