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How to Troubleshoot the Blind Spot Information (BSI) System
NOTE: Do not make any bumper repairs in the areas over or near the two radar units on vehicles equipped with the Blind Spot Information (BSI) System. The composition of the repair materials, and/or increased material thickness in the repaired area, may interfere with BSI radar unit operation. BSI Indicator (Amber)
When the BSI system is OK, the BSI indicator comes on for a few seconds after the vehicle is turned to the ON mode, then it goes off. BSI Alert Indicator
While the BSI system is working, the system turns on/blinks* the appropriate BSI alert indicator (right or left) when it detects another vehicle on either side of the rear. *: When the driver moves the turn signal lever toward the side with the BSI alert indicator on, the alert indicator blinks to alert the driver. Multi-Information Display (MID) Indication
When the BSI system is OK, the BSI indicates its operation on the MID in the gauge control module as below. Self-Diagnostic Function
The BSI system has a self-diagnostic function. If the self-diagnostic function detects a malfunction, the BSI system stops operating. The BSI indicator comes on, and the BSI system indicates "Blind Spot Info System Problem" on the MID. When mud, dirt, wet snow, leaves, or other foreign material sticks to the side of the rear bumper, the BSI system stops operating and the message on the MID indicates that the BSI radar units must be cleaned. It also turns on the BSI indicator at the same time, and stores the DTC(s). When the obstruction or contamination is removed, the indicator on the MID goes off and the BSI system automatically returns to ON. BSI Radar Units
The BSI radar units are installed behind the rear bumper on both sides of the vehicle, and they have a control unit. Each BSI radar unit communicates with the other BSI radar unit. The BSI radar units detect other vehicles as they approach your vehicle from the rear sides, and the BSI radar units send this information to the BSI alert indicator. CAN Communications
B-CAN
The BSI radar units are on the B-CAN system, and they communicate with other units (gauge control module, MICU) via B-CAN. If the BSI radar units detect a communication error or a malfunction in another connected unit, the BSI system will not operate even though it is OK. In this case, the BSI indicator and the related unit indicator will come on and stay on. Intermittent Failures
The term ‘‘intermittent failure’’ means a system may have had a failure, but it checks OK now. If you cannot reproduce the condition, check for loose connections and terminals. Also check ground and power connections related to the circuit that you are troubleshooting. How to Troubleshoot DTCs
Check the DTCs with the HDS. Before troubleshooting, check and note these items:
Some DTCs may be stored even when the system is OK. For example, the BSI indicator may come on with one or more of these DTCs:
How to Retrieve DTCs
How to Clear DTCs
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