BCM TO SENSOR ELECTRICAL INTERFACE Ultrasonic sensors mounted on the rear bumper. The slave sensors hardwired to the master sensor and the master sensor hardwired to the BCM ECU through LIN. The sensors powered through ignition and controlled by BCM ECU. The ground of the sensors connected to the ground of the vehicle. REMOVAL OF SENSOR Due to any reasons, if sensor damages, you have to replace the sensor with the new one. Following sequence of operations are required to replace the sensor on rear bumper. Step 1: Remove the bumper carefully without damaging the wiring harness. Hold the bumper until wiring harness is carefully ejected from the connectors. (Refer rear bumper procedure in body section) Step 2: Gently remove the damaged sensor from the snap fitted holder (From bumper B surface). Don’t put heavy force while removing. This may cause sensor holder loosening/eject out from the bumper. Step 3: Remove the sensor wiring harness gently without damaging mating connector lock. Step 4: Disconnect the electrical connector from sensor as per below image. LOW VOLTAGE ELECTRICAL SYSTEM (LV) 209
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