Maintenance manual for sunray hfc4da1-2c china-IV diesel engines
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Fault Tree:
Get the Technical Support.
Repair accordingly.
Repair the harness.
Replace the clutch switch.
Check clutch switch.
Clutch switch fault
Check clutch switch harness.
Harness fault
Check clutch switch power supply voltage.
Power supply signals are distorted.
Replace ECU and check
Does the problem still exist?