John Deere 002390.06 – RLC: License Plate Light High Amp Draw

The electrical current in the license plate light circuit has surpassed its designated threshold. The Roof Lighting Control Unit (RLC) detects this excessive amperage draw and logs the fault. The control unit may disable the circuit to prevent electrical damage, indicating a potential short circuit to ground or a faulty component within the light assembly.

• 6110R
• 6120R
• 6130R
• 6135R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 6R 110
• 6R 120
• 6R 130
• 6R 140
• 6R 150
• 6R 175
• 6R 195
• 6R 215
• 6R 145
• 6R 155
• 6R 165
• 6R 185
• 6R 230
• 6R 250
• 5R Series
• 6M Series

1. 1

   Access and verify the fault code 002390.06 is active using the tractor's diagnostic display. Note any other active codes.

2. 2

   Visually inspect the license plate light assembly, its lens, and the visible wiring for any signs of physical damage, corrosion, or water intrusion.

3. 3

   Inspect the license plate light bulb to ensure it is not faulty or the incorrect type.

4. 4

   Examine the wiring harness leading to the license plate light for chafed, pinched, or melted insulation that could cause a short circuit to the tractor's frame (ground). Disconnect and inspect the connectors for corrosion or damage.

1. 1

   Disconnect the Light

   Disconnect the electrical connector at the license plate light assembly.

2. 2

   Clear Fault Codes

   Clear the active fault codes using the tractor's diagnostic system.

3. 3

   Check for Code Return

   Turn on the lights. If the fault code 002390.06 does not return, the fault is likely within the license plate light assembly itself (the bulb or the housing). If the code returns immediately with the light disconnected, the fault is in the wiring harness between the RLC module and the light.

4. 4

   Test the Circuit

   If the fault is in the wiring, use a multimeter to check for a short to ground on the power wire of the license plate light circuit. This involves checking for continuity between the power wire and the tractor chassis.

5. 5

   Isolate the Short

   If a short is detected, trace the wiring harness from the light back to the RLC, looking for the point of failure. A wiring diagram for the specific tractor model is highly recommended for this step.

6. 6

   Repair or Replace

   If the light assembly is faulty, replace it. If the wiring harness is damaged, repair the specific section or replace the entire harness if the damage is extensive.

7. 7

   Final Verification

   After the repair, reconnect all components, clear any fault codes, and activate the lights to ensure the fault does not reappear.