1. Remove the liftgate upper trim.
2. Remove the liftgate side trim.
3. Pull the handle toward you, then remove the handle.

4. Pull the liftgate lower trim toward you, then disengage clips A, B and pins C, D from the body.
5. Remove the liftgate lower trim.
6. Install in the reverse order of removal.
Liftgate side trim removal/installation
HeadlinerMazda 6 Service Manual: Rear door lock actuator inspection
Door Lock Actuator
1. Disconnect the front door lock actuator connector.
2. Apply battery positive voltage to the front door lock actuator terminals
and inspect the operation of the front door lock actuator.
If not as specified, replace the front door lock actuator.
With double locking ...
Mazda 6 Service Manual: Owner Maintenance Precautions
The owner or a qualified service technician should make these vehicle inspections
at the indicated intervals to ensure safe and dependable operation.
Bring any problem to the attention of an Authorized Mazda Dealer or qualified
service technician as soon as possible.
At Least Twice a Year (For ...