John Deere ECU

John Deere ECU Repair – No Communications / Completely Dead

Service Description:
This is a repair service for John Deere ECUs that are completely unresponsive or have no communication with diagnostic tools. Common in older or weather-exposed units, these failures often stem from internal corrosion, power regulator faults, or processor-level damage.

Common Symptoms We Repair:

• No CAN or serial communication

• ECU appears dead or draws no current

• Engine fails to crank or start

• No response during diagnostics

• Evidence of water or vibration damage

What We Do:
✔ Full ECU teardown and inspection
✔ PCB cleaning, X-ray diagnostics (if required)
✔ Component-level repair including power supply and transceiver ICs
✔ Replacement of corroded connectors or damaged tracks
✔ Bench test and validation before dispatch