Blind Spot Monitoring (BSM) Control Module Inspection: Notes

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Remove the trunk end trim. See TRUNK END TRIM REMOVAL/INSTALLATION .
Remove the rear seat cushion. See REAR SEAT CUSHION REMOVAL/INSTALLATION .
Remove the rear side seat back. See REAR SIDE SEAT BACK REMOVAL/INSTALLATION .
Remove the trunk side trim. See TRUNK SIDE TRIM REMOVAL/INSTALLATION .
Measure the BSM control module terminal voltage using the rear wiring harness connector in the position shown in the figure.

Fig 1: Identifying Rear Combination Light And Rear Wiring Harness Connector
Courtesy of MAZDA MOTORS CORP.
NOTE:
- The BSM control module connector cannot be connected to a tester due to its water-resistance processing, therefore the rear wiring harness connector is used for measuring the terminal voltage.