1. Measure the voltage at the door lock timer unit terminals (other than terminal 1E and 2W) as indicated below.
2. Disconnect the negative battery cable.
3. Disconnect the door lock timer unit connector and inspect for continuity between terminal 1E or 2W and the bracket.
4. Inspect for continuity at terminal 1E and 2W as indicated below.
5. If the parts and wiring harnesses are okay but the system still does not work properly, perform the troubleshooting.
Terminal voltage list (Reference)



*1 : Vehicles with double locking system
*2 : Vehicles with theft-deterrent system
Door lock timer unit removal/installation
Door lock timer unit id code changeMazda 6 Service Manual: Floor Mat
We recommend the use of Genuine Mazda floor mats.
WARNING
Make sure the floor mats are hooked on the retention pins to prevent them
from bunching up under the foot pedals: Using a floor mat that is not secured
is dangerous as it will interfere with the accelerator and brake pedal operation,
...
Mazda 6 Service Manual: Supplier identification procedure
Note
When asking the supplier (service center) for repair or
replacement, verify which supplier the module belongs to and enter in the
Audio Repair Order Form.
Identification With Printed Numbers/Label
1. Remove the audio unit.
2. Verify the supplier name written on the label attached ...