SW900 Display Failure Due to Ignition Signal Interruption

Even when high-voltage power is successfully reaching the controller via the XT60 connector, the SW900 system requires a low-voltage 'ignition' signal to activate. This failure occurs when the display unit is unable to send this wake-up signal through the 1T4 cable to the controller, or when the controller fails to recognize the handshake. If the display remains blank despite confirmed power at the controller, the issue lies in the communication loop between the display and the controller, preventing the system from transitioning from standby to active mode.