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

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".

3.	Select the 'Data Analysis'.

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

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'.

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

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
	Latch assembly failure	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
	Low voltage of the Power Tailgate module battery	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.
	Latch assembly failure	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.
	Wiring problem (system or vehicle)	Refer to wiring diagram.
Loss of electricity during the tailgate operation	Wiring problem (system or vehicle)	Resolve the problem using the wiring map.
	Wiring problem (system or vehicle)	Refer to wiring diagram.
	Low voltage of vehicle battery	Check for proper voltage of PTGM.
	Low voltage of vehicle battery	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
	Low voltage of the Power Tailgate module battery	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.
	Low 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
	Failure of Body Control Module (BCM)	Replace BCM if needed
	Malfunctioning of wireless remote control key	Rewrite the wireless remote control key program
	Malfunctioning of wireless remote control key	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
Unable to maintain opened status of the tailgate	Failure on PTG spindle	Check if attached objects are damaged
Excessive operating force when opening and closing	Failure on PTG spindle	Replace PTG spindle
	Failure on 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
When tailgate keeps cinching lock mode	Failure on the latch assembly	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
	Wiring problem (system or vehicle)	Refer to wiring diagram.
Very slow opening of the tailgate	Vehicle battery voltage too low	Check for proper voltage of PTGM.
	Vehicle battery voltage too low	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
Rattling or squeaky sound	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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