John Deere 002370.06 – CLC / RLC / ICC / FCC / VLC: Right Front Turn Signal High Amps

The electrical system has detected an abnormally high current draw in the right front turn signal circuit. This condition is typically caused by a short circuit to ground, where the electrical current finds an unintended path, or by a faulty component drawing excessive power. The affected circuit, including the bulbs and the responsible control module (CLC, RLC, ICC, FCC, or VLC), must be checked to prevent lighting failure.

• 5085E
• 5090E
• 5100E
• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 8130
• 8230
• 8330
• 8430
• 8530
• 8R Series
• 9x30 Series
• 4000 Series
• 7000 Series
• 7R Series

1. 1

   Inspect the right front turn signal lamp housing, bulb, and visible wiring for any signs of damage, corrosion, or pinched wires

2. 2

   Check the condition of the turn signal bulb (a broken filament can fall and short internal connections, causing high current draw)

3. 3

   Check for and remove any non-factory accessories added to the lighting circuit to see if the fault clears

4. 4

   Clear the diagnostic trouble code, activate the right turn signal, and observe if the code reappears immediately to confirm an active fault

5. 5

   Verify the Cab Load Center (CLC) lighting configuration is correct for the tractor's specific lighting package (e.g., North American vs. European settings) by accessing the control unit's diagnostic addresses (e.g., CLC Address 053 and 054)

1. 1

   Disconnect power

   Disconnect the battery before performing any electrical repairs to ensure safety.

2. 2

   Isolate the circuit and test for short

   Remove the right front turn signal bulb. Using a multimeter set to measure resistance (Ohms), connect one probe to the power supply terminal in the bulb socket and the other to a clean, unpainted chassis ground. A reading near zero ohms indicates a direct short to ground in the wiring between the control module and the bulb socket.

3. 3

   Trace the wiring harness

   If a short is detected, visually trace the wiring harness from the turn signal lamp back towards the cab control module. Look for chafed, melted, or damaged insulation, paying close attention to areas where the harness passes through the frame, near sharp edges, or could be subject to pinching or rubbing.

4. 4

   Test the turn signal switch

   Test the turn signal switch for continuity to ensure it is opening and closing the correct circuits without internally shorting to ground. On some series like the 4000, the entire turn signal and flasher assembly is a common failure point and may require replacement.

5. 5

   Inspect the control module

   If no short is found in the external wiring or components, inspect the control module (CLC, RLC, etc.) connectors for corrosion or pushed-out pins. If an internal module failure (such as a faulty output driver) is suspected, consult a dealer for replacement and programming.