SCC 523694.09 – Missing SV II External Control Message for 1 Second

SCC 523694.09 (SCC )

Code: 523694.09



This error code indicates that the external control message for Selective Control Valve II (SV II) has been missing for longer than 1 second. Missing command messages can originate from the Resume Switch, iTEC™, Option Configuration Connector, or Attached Implements.


When this code is detected, the SCC functions will be degraded, impacting overall performance.


Check External Control Sources:

  • Verify the functionality of the Resume Switch, iTEC™, Option Configuration Connector, and any attached implements that may be sending control messages to SV II.

Inspect Wiring and Connectors:

  • Check all wiring and connectors associated with SV II for signs of damage, poor connections, or corrosion. Repair or replace as necessary.

Monitor Communication:

  • Use diagnostic tools to monitor the communication signals from external control sources to SV II, ensuring they are being received consistently.

Update Firmware and Software:

  • Ensure all relevant components, including the SCC, have the latest firmware and software updates.

Consult Technical Support:

  • If the issue persists, contact technical support for further diagnostics and assistance.


Reliable communication from external control sources is essential for the accurate and efficient operation of SV II.

Control Units: John Deere

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