1. Remove the rear map light. (See REAR MAP LIGHT REMOVAL/INSTALLATION.)
2. Inspect for continuity between the rear map light terminals using an ohmmeter.


Rear map light removal/installation
Cargo compartment light removal/installationMazda 6 Service Manual: Dsc hu/cm removal/installation
Caution
When replacing the DSC HU/CM, configuration procedure must be done
before removing the DSC HU/CM. If configuration is not completed before
removing the DSC HU/CM, DTC B2477 will be detected.
Do not drop the DSC HU/CM. Replace it if it is subjected to an
impact.
1. Configura ...
Mazda 6 Service Manual: Key Battery Replacement
If the buttons on the transmitter are inoperable and the operation indicator
light does not flash, the battery may be dead.
Replace with a new battery before the transmitter becomes unusable.
CAUTION
Make sure the battery is installed correctly. Battery leakage could occur
if it is not in ...