1. Remove the high-mount brake light.
2. Fold the rear seat back.
3. Remove the fasteners.

4. Pull the rear package trim upward, then disengage the clips from the body.
5. Disengage the hooks, then remove the rear package trim.
6. Install in the reverse order of removal.
Tire house trim removal/installation
Trunk side trim removal/installationMazda 6 Service Manual: Theft-deterrent control module inspection
1. Remove the theft-deterrent control module without disconnecting the
connectors.
2. Measure the voltage at the theft-deterrent control module terminals as
indicated below.
3. Disconnect the theft-deterrent control module connector before inspecting
for continuity at terminals L, Q, S, T, a ...
Mazda 6 Service Manual: Antilock Brake System (ABS)
The ABS control unit continuously monitors the speed of each wheel. If one wheel
is about to lock up, the ABS responds by automatically releasing and reapplying
that wheel's brake.
The driver will feel a slight vibration in the brake pedal and may hear a chattering
noise from the brake system ...