Power Liftgate System Control Parameters

The power liftgate system is designed with a number of control parameters, which are conditions that must be fulfilled to allow operation. These control parameters are listed below:

• The PLGM will inhibit operation of the power liftgate in extreme ambient temperatures. These temperatures are at or below about -30° C (-22° F) and at or above about 65° C (149° F). The pinch sensor/thermistor assembly on the right side of the liftgate monitors the ambient temperature.
• The transmission must be in the Park  (P) or Neutral  (N) positions for the power liftgate system to operate.
• The vehicle speed input must be zero (0) for the power liftgate system to operate.
• The electrical system voltage must be within minimum and maximum specifications for the power liftgate system to operate. A low-voltage cut off is built into the power liftgate system to prevent the battery from discharging to the point where the vehicle cannot be operated.
• If the ignition switch is in the Start  position, the power liftgate system will not initiate a power cycle.
• If the ignition switch is moved to the Start  position during a power cycle, the power liftgate will pause.
• If the vehicle is locked, the exterior liftgate handle will not release the latch. The FOBIK and the overhead console switch will work for power open or close cycles.
• If the vehicle theft alarm is armed, the overhead console switch will not open the liftgate; however, the FOBIK will.
• If a liftgate pinch sensor is activated during a power close, the liftgate will reverse direction. If a pinch sensor is already active, the power liftgate system will not initiate a power close. A pinch activation during latch cinch will stop the cinch operation.
• If something sufficiently impedes liftgate travel, the power liftgate will detect an obstacle and reverse direction, traveling to full open or full closed.
• If multiple obstacles are detected during the same power open or close cycle, the liftgate will abort that power cycle and go into full manual operation.
• The power liftgate components are protected by the power liftgate system fuse. If the fuse is ineffective, the power liftgate system will not function.
• Some Diagnostic Trouble Codes (DTC) stored in the PLGM may cause the power liftgate system not to operate. Always use a diagnostic scan tool to check and clear DTCs from the PLGM before and after servicing any power liftgate system components.