The Smart Junction Box (SJB), commonly referred to as the Body Control Module (BCM), in collaboration with Scan Tool, connects various systems and simplifies troubleshooting of all electrical systems. The BCM or SJB is responsible for controlling several components of the vehicle interior and exterior including the power door locks, power windows, ignition lock and security system, interior lamps, Daytime Running Lights,
Horn, windshield wipers, heat/air conditioning, and power mirrors. A competent automotive repair facility should diagnose a malfunctioning motorcycle. The door lock actuators, switch, and wiring circuit make up the power door lock system. The diagnosis for power door lock system is typically limited to checking the wiring connection and the door lock actuators. Power door lock systems rarely malfunction due to the small fault. Bi-directional solenoids in the doors are used by the system. The lock switch sends a signal to the SJB to activate the solenoid. If troubleshooting fails to rectify the issue, inspecting circuit protection, voltage at switches, and continuity of switch is important. Checking for voltage at the solenoid while the lock switch is operated if one solenoid is inoperative, and if it sees voltage replace the solenoid. If it doesn't get power, the wiring might have a short or an open. The SJB communication is will enable the power door lock system, and after this, consult a qualified shop with the appropriate scan tool if problems continue. The keyless entry system is operated by a remote control transmitter that sends an infrared signal to a receiver that controls the door locks. When the transmitter does not operate within a distance of ten feet, it needs a battery replacement. To program a replacement key it requires a scanner and the vehicle needs to be taken to a place that can perform this function, as there's no fix for the theft deterrent. Anyone who programs keys must also have a federal locksmith license, as well as the tools.