Failure Cause:

• Short circuit of the flow meter may occur after the left spray nozzle actuator reports disconnection, as both share a common communication link with the flow meter/controller interface.

Troubleshooting Steps:

1. ​Test Left Nozzle Actuators:
   • Remove the left spray nozzles sequentially and restart the system.
   • Observe if the fault persists.
2. ​Determine Fault Source:
   • If the fault resolves after removing a nozzle → Replace the faulty spray nozzle actuator.
   • If the fault remains → Replace the flow meter.