John Deere 000168.04 – SCC: Low Voltage to Rear Chassis Module

The unswitched supply voltage to the Rear Chassis Module (SCC) has dropped below the required operational threshold, which is sometimes specified as below 9.0 volts. This low voltage condition impedes the proper function of the module and the systems it governs.

• 6110R
• 6120R
• 6125R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 7200R
• 7215R
• 7230R
• 7260R
• 7280R
• 8130
• 8230
• 8330
• 8335R
• 8430
• 8530
• 9230
• 9330
• 9360R
• 9410R
• 9430
• 9460R
• 9460RT
• 9510R
• 9510RT
• 9530
• 9560R
• 9560RT
• 9630

1. 1

   Turn off any non-essential electrical components to reduce electrical load and see if the code clears

2. 2

   Run the engine at a higher RPM to increase alternator output and check if the low voltage issue resolves

3. 3

   Cycle power by turning the tractor off and then restarting it to see if the fault code is temporary

4. 4

   Power down the tractor and inspect fuses related to the affected control module (specifically check fuses F29 and F30 for certain hydraulic control units)

5. 5

   Visually inspect the area around the batteries and alternator for any signs of damage, corrosion, or accumulated debris that could affect the electrical connection

1. 1

   Perform initial diagnostics

   Execute all preliminary checks including reducing electrical load, increasing engine RPM, cycling power, and inspecting fuses, batteries, and the alternator.

2. 2

   Check for active code

   After performing the initial checks, verify if the fault code is still active on the display.

3. 3

   Professional diagnosis

   If the code persists after operator-level checks, contact a John Deere dealer. A qualified technician is required to use specialized diagnostic tools to identify if the root cause is a damaged wiring harness, a faulty alternator, or a failed control module.