1. Disconnect the back-up light switch connector.
2. Inspect for continuity between the back-up light switch terminals using an ohmmeter.


Back-up light switch removal/installation
Flasher unit removal/installationMazda 6 Service Manual: Shift mechanism
1. Remove the battery, battery tray and battery bracket.
2. Remove the air cleaner component. (See INTAKE-AIR SYSTEM
REMOVAL/INSTALLATION.)
3. Remove the dashboard compleat. (See DASHBOARD REMOVAL/INSTALLATION.)
4. Remove the SAS control module. (See SAS UNIT REMOVAL/INSTALLATION.)
5. Remove t ...
Mazda 6 Service Manual: Dsc hu/cm inspection
1. Remove the battery and battery bracket.
2. Disconnect the DSC HU/CM connector.
3. Connect the SST (49 G066 004) to the DSC HU/CM connector and
harness side connector.
4. Inspect voltage referring the table below.
Terminal Voltage Table (reference value)
(Ignition switch is at ON, and conne ...