John Deere 002368.06 – ICC / FCC / RLC / CLC / VLC: Left Front Turn Signal High Amps

The electrical system has detected an abnormally high current draw in the left front turn signal circuit. This condition is typically caused by a short circuit to ground, where the electrical current bypasses the intended load (the bulb) and finds an unintended path to the chassis frame, causing excessive current flow that triggers the fault code.

• 5085E
• 5090E
• 5090EL
• 5100E
• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 770G
• 770GP
• 772G
• 772GP

1. 1

   Restart the tractor to see if the fault code clears, which rules out a temporary communication error

2. 2

   Check the left front turn signal bulb for a broken filament that may be shorting against its internal structure

3. 3

   Visually inspect the left front turn signal housing, lens, and visible wiring for physical damage, moisture ingress, or corrosion

4. 4

   Ensure the turn signal switch is not physically stuck in the 'on' position

5. 5

   Inspect the wiring harness leading to the left front turn signal for chafed, pinched, or melted insulation that could cause a short to the frame

1. 1

   Access fault codes

   View active codes using the left steering column button (5-Series) or the corner post display and roller dial (M-Series and R-Series) to confirm the fault.

2. 2

   Replace turn signal bulb

   Replace the left front turn signal bulb, even if it appears visually intact. This is the most frequent and lowest-cost solution to internal bulb shorts.

3. 3

   Isolate short circuit

   If a new bulb does not resolve the issue, disconnect the turn signal bulb and connect a 12-volt test light in its place. Activate the turn signal; if the test light illuminates brightly, a short to ground is present in the wiring. Disconnect connectors along the harness back towards the control module one by one. When the test light goes out, the short is located in the section just disconnected.

4. 4

   Inspect sockets and connectors

   Check the bulb socket and harness connectors for corrosion or moisture, which can create a conductive path to ground. Clean any corroded terminals thoroughly.

5. 5

   Repair wiring

   Once the location of the short is identified (e.g., a rubbed wire), cut out the damaged section, splice in a new piece of wire of the same gauge, and seal the repair with heat shrink tubing to prevent moisture intrusion.

6. 6

   Diagnose control module

   If no short is found in the bulb, socket, or wiring, the fault may lie within the control module (RLC, ICC, or VLC). This is the least likely cause and should be diagnosed by a dealer.