Description And Operation: Operation
The BSM displays provide the vehicle operator with a visual alert that a target vehicle (object of interest) has been detected by the BSM system within one of the BSM or Rear Cross Path (RCP) detection zones. The BSM display is also illuminated momentarily as a bulb test each time the ignition status transitions to ON as a part of the BSM system self tests. If a BSM display remains illuminated with the park brake applied or with the automatic transmission gear selector in the Park (P ) position, it indicates that the BSM system has registered a system fault and may require service.
Each BSM display is completely controlled by a hardwired output of the Radio Detection And Ranging (RADAR) smart sensor (Left Blind Spot Sensor / LBSS or Right Blind Spot Sensor / RBSS) for the same side of the vehicle as the display. The display units are grounded at all times through a takeout and eyelet terminal of the body wire harness that is secured to the body sheet metal.
The hardwired circuits between the BSM displays and the LBSS or RBSS may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds. For proper wire repair, and connector repair procedures, refer to STANDARD PROCEDURE , REMOVAL and INSTALLATION . However, conventional diagnostic methods will not prove conclusive in the diagnosis of the BSM displays or the electronic controls and communication between other modules and devices that provide some features of the BSM displays. The most reliable, efficient and accurate means to diagnose the BSM displays or the electronic controls and communication related to BSM display operation requires the use of a diagnostic scan tool.