TechnicianVision · Knowledge base
Honda Blind Spot Indicator (BSI) Dummy Sensor
I-CAR · August 23, 2024 · Honda, Acura
Summary
Honda vehicles not equipped with a functional Blind Spot Indicator (BSI) system utilize 'dummy sensors' to satisfy system checks on the factory wiring harness. These dummy sensors look identical from the front but are labeled 'DUMMY' on the back, weigh half as much as functional sensors, and lack mirror indicator lights.
What to do on the job
Verify if the vehicle has mirror indicator lights, check the back of the sensor for the word 'DUMMY', and explicitly specify 'dummy sensors' when ordering parts since VIN decoding will not differentiate them from functional sensors.
How to use it
Use this document to justify ordering dummy sensors instead of active radar sensors on non-BSI equipped vehicles. It also serves as a defense against insurers or technicians who might assume a vehicle has active BSI due to the presence of sensor-like housings behind the bumper, and explains why installing an active sensor on these vehicles will trigger difficult-to-clear DTCs.
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