John Deere 523773.0 – SCC: High Voltage On Rear SCV Valve 5

The electrical system has detected a voltage level on the circuit for the fifth rear Selective Control Valve (SCV) that is above the normal operating range. This may indicate an issue with the electrical system, such as a short to power, or a malfunction in the SCV component itself.

• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R

1. 1

   Clear all stored fault codes and operate the machine to see if the code reappears.

2. 2

   Inspect the charging system, including the alternator and battery terminals, for any signs of damage or corrosion. Test the charging system to ensure it is operating within correct voltage specifications.

3. 3

   Check for any other active fault codes, particularly those related to low voltage. High voltage codes can sometimes be triggered as a secondary effect of a low voltage issue causing voltage instability. Reducing the electrical load or increasing the engine RPM may help in system recovery.

4. 4

   Carefully inspect the wiring harness and connectors leading to the fifth rear SCV and the Rear Chassis Module (SCC). Look for chafing, corrosion, loose connections, or a short to a power source.

5. 5

   Test the SCV solenoid coil for resistance using a multimeter. A reading of zero ohms indicates a shorted coil, while an infinite reading suggests an open coil.

1. 1

   Address charging system issues

   If diagnostic checks reveal a problem with the alternator or battery, repair or replace these components first to resolve voltage instability.

2. 2

   Repair wiring

   If any damage is found in the wiring harness, repair the affected wires or replace the harness section. Ensure all connectors are clean, secure, and making good contact.

3. 3

   Replace the SCV solenoid

   If the solenoid for the fifth SCV is determined to be faulty (e.g., shorted or open coil), remove the retaining nut, slide the old coil off, and install the new one.

4. 4

   Replace the Rear Chassis Module (SCC)

   If all other components test correctly and the wiring is sound, the issue may lie within the SCC itself. Replace the SCC module.

5. 5

   Perform software calibration

   After replacing components like the SCC, a software download or calibration by a John Deere dealer may be required.