Kia Sorento: Troubleshooting - Power Tailgate Module - Body Electrical System - Kia Sorento XM 2011-2019 Service ManualKia Sorento: Troubleshooting

Second Generation XM (2011-2019) / Kia Sorento XM 2011-2019 Service Manual / Body Electrical System / Power Tailgate Module / Troubleshooting

Diagnosis And Testing - Power Tailgate System
The power Tailgate system is a complex system containing many components. In order to perform conclusive testing, or receive outputs the power Tailgate control module must be checked.
The most reliable, efficient, and accurate means to diagnose the power Tailgate system requires the use of a GDS. The GDS can be used to observe current switch status recorded in the power Tailgate control module to help the technician diagnose an inoperative switch.
Before any testing of the power Tailgate system is attempted, the battery should be fully charged, all power Tailgate system inhibitors read and understood (Refer to power Tailgate system description for list).
Following are quick reference diagnostic tables to help when diagnosing and testing the power Tailgate system.
CONDITION
POSSIBLE CAUSES
CORRECTION
Tailgate opens unexpectedly
Accidental activation or Failure of open/close command switch
Check for shorted or defective switch
Failure of latch assembly
Check wiring connections
Check for trouble codes, replace latch if necessary
Failure of Power Tailgate or Body Control module
Disconnect then reconnect battery or fuse to reset module, function tailgate, if no function exists check for loose wire connections, see Body Diagnostic Manual for detailed procedures
Tailgate will not power open or close
Not in Park or false indication
Check switch status with SCAN tool
Battery voltage at PTGM is too low
Check for proper voltage at the PTGM
Charge battery
Blown fuse
Check for blown fuse
Gas strut failure
Check condition of tailgate gas struts
BCM or tailgate control module critical fault codes
Check code status with SCAN tool
Failure of latch assembly
Check wire connections and for blown fuse
Check for foreign matter preventing the operation of latch assembly
Tailgate will not power open or close
Failure of motor assembly
Test motor assembly
Binding or sticking of components
Establish location of binding and replace necessary components
Wiring problems (system or vehicle)
Troubleshoot using electrical schematics
Refer to wiring diagrams
Power loss during Tailgate operation
Wiring problems (system or vehicle)
Troubleshoot using electrical schematics. Refer to wiring diagrams
Battery voltage at PTGM is too low
Check for proper voltage at the PTGM
Charge battery
Failure of Power Tailgate or Body Control Module
Check for diagnostic trouble codes with SCAN tool
Failure of motor assembly
Test motor assembly
No power latching in primary and/or secondary positions
Failure of latch assembly
Check wire connections and for blown fuse
Check for diagnostic trouble codes and cycle with SCAN tool
Troubleshoot using Body Diagnostic Manual. Replace latch assembly, if necessary
Binding or sticking of components
Establish location of binding and replace necessary components
Failure of Power Tailgate or Body Control Module
Check for diagnostic trouble codes with scan tool
Tail Gate seal force too high
Inspect seals for damage, mis-assembly, foreign matter or other possible obstruction
Failure of motor assembly
Test motor assembly
Latch will not release from primary position
Not in Park or false indication
Check switch status with SCAN tool
Battery voltage at PTGM is too low
Check for proper voltage at the PTGM
Charge battery
Blown fuse
Check fuse and replace if required
Failure of latch assembly
Check switch status with scan tool
Check for foreign matter or damaged components preventing the operation of latch assembly
Troubleshoot using body diagnostic manual.
Replace latch assembly, if necessary
Failure of outside handle connection
Check handle of brainplate.
Failure of Power Tailgate or Body Control Module
Check for diagnostic trouble codes and cycle with scan tool
Binding or sticking of components
Establish location of binding and replace necessary components
Key fob or overhead console switch does not power operate tailgate
Blown Fuse
Check fuse and replace
Battery voltage at PTGM is too low
Check for proper voltage at the PTGM
Charge battery
Does Not Power Unlatch
Failure of latch assembly
Check for foreign matter preventing the operation of latch assembly
Check for diagnostic trouble codes and cycle with scan tool
Check pawl and/or ratchet switch with SCAN tool
Troubleshoot using body diagnostic manual
Does Not Power Unlatch
Failure of Power Tailgate Module
Troubleshoot using body diagnostic manual
Failure of Body Control Module (BCM)
Troubleshoot using body diagnostic manual
Replace BCM if necessary
Failure of key fob
Reprogram key fob
Replace key fob if necessary
Failure of Power Tailgate Module
Check for diagnostic trouble codes with scan tool, see
Body Diagnostic Manual for detailed procedures
Failure of tailgate motor assembly
Check for foreign matter preventing the operation of motor assembly
Check wire connections
Motor clutch does not engage, replace assembly
Full open switch inoperative, replace switch, if necessary
Troubleshoot using Body Diagnostic Manual Replace motor, if necessary
Tailgate does not stay open
Failure of tailgate gas struts
Replace gas struts
Check for broken attachments
High inside/outside opening effort
Failure of tailgate gas spindle
Replace gas spindle
Check for broken attachments
Drive unit jammed or did not disengage
Troubleshoot using Body Diagnostic Manual
Replace components, if necessary
Binding or sticking of components
Establish location of binding and replace necessary components
Tailgate continues to cinch closed
Failure of latch assembly
Check wire connections and for blown fuse
Check switches with SCAN tool
Tail gate continues to power close
Failure of latch assembly
Check wire connections
Check for foreign matter
Troubleshoot using Body Diagnostic Manual
Control Module
Check for diagnostic trouble codes with Scan tool
Wiring problems (system or vehicle)
Troubleshoot using electrical schematics
Refer to wiring diagrams
Tailgate continues to power open
Failure of PTGM or BCM
Check for diagnostic trouble codes and cycle, see Body Diagnostic Manual for detailed procedures
Failure of motor assembly
Check for continuous drive condition
Wiring problems (system or vehicle)
Troubleshoot using electrical schematics
Refer to Wiring Diagrams
Tailgate opens very slowly
Battery voltage at PTGM is too low
Check for proper voltage at the PTGM
Charge battery
Failure of tailgate gas struts
Replace gas struts, if necessary
Binding or sticking of components
Establish location of binding and replace necessary components
Grade of vehicle too steep for power operation
Operate tailgate manually
Failure of tailgate motor assembly
Replace motor assembly, if necessary
Squeaks, Noises and rattles
Foreign material in tail gate compartment
Remove foreign material
Worn/Loose components
Check and tighten loose components

Operation
Power Tailgate Opening ** - Primary switch signal received by PTGM via CAN bus (sent by IPM) PTGM Opening procedure: 1. Opening can be triggered after a signal i ...

Power Tailgate Unit Circuit Diagram
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