BCM or sliding door control module
critical fault codesCheck for diagnostic trouble codes
Failure of latch assembly Check wire connections and for blown fuse
Check for foreign matter preventing the
operation of latch assembly
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 Sliding
Door operation Wiring problems (system or vehicle)
Troubleshoot using electrical schematics
Refer to wiring diagrams
Battery voltage at PSDM is too low
<9.5V to start operation and
<8.0V to continue operation Check for proper voltage at the PSDM.
Charge battery
Failure of Power Sliding Door or Body
Control Module Check for diagnostic trouble codes
Failure of motor assembly Test motor assembly
Sliding Door does not close
to primary latch position Door mis - alignment Check latch and striker alignment
Check rollers and track alignment
Binding or sticking of components Establish location of binding and adjust or
replace necessary components
Failure of Power Sliding Door or Body
Control Module Check for diagnostic trouble codes
Sliding Door 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 PSDM is too low Check for proper voltage at the PSDM
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 or inside handle
connection Check handle connections on brainplate.
Failure of Power Sliding Door or Body
Control Module Check for diagnostic trouble codes.
Binding or sticking of components Establish location of binding and adjust or
replace necessary components
Key fob or overhead
console switch does not
power operate sliding door Blown Fuse
Check fuse and replace
Battery voltage at PSDM is too low Check for proper voltage at the PSDM.
Charge battery
Refer to wiring diagrams
2007 > 2.7L V6 GASOLINE >
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 scan tool
and the proper Body Diagnostic Procedures manual. The scan tool 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
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
Failure of tailgate motor assemblyMotor 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 struts
Replace gas struts
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
DTC LIST DTC CODE DISPLAY
B1101 Battery Voltage High
B1102 Battery Voltage Low