John Deere 2876.02 – ICC / CAB: Turn Signal Switch Problem / Conflict

The control module has detected an invalid, conflicting, or missing electrical input signal from the operator's turn signal switch/lever.

• 5085E
• 5090E
• 5090EL
• 5100E
• 5090M
• 5100M
• 5100MH
• 5100ML
• 5115M
• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 5085M
• 7630
• 7720
• 7730
• 7810
• 7820
• 7830
• 7920
• 7930
• 7185J
• 7205J
• 7225J
• 8310RT
• 8335RT
• 8360RT
• 9230
• 9330
• 9430
• 9530
• 9630

1. 1

   Restart the tractor's engine to perform a system reset, as the code can sometimes be triggered by a transient communication message error.

2. 2

   Press the select switch on the CommandCenter to acknowledge and clear the code. If it returns immediately, a hard fault exists.

3. 3

   Test the turn signal lever for proper mechanical detent operation in the left, right, and neutral positions.

4. 4

   Inspect the wiring harness and connectors between the turn signal switch and the CAB/ICC module for loose pins, corrosion, or chafed wires causing a short or open circuit.

5. 5

   Verify the cab and operator control fuses to ensure the turn signal switch is receiving proper supply voltage.

1. 1

   Disconnect Power

   Disconnect the battery negative (-) cable to prevent electrical shorts.

2. 2

   Access the Switch

   Remove the steering column covers or dashboard trim panels to expose the turn signal switch assembly.

3. 3

   Disconnect Wiring

   Unplug the electrical wiring harness connector from the back of the turn signal switch.

4. 4

   Remove the Switch

   Remove the mounting screws or retaining clips holding the turn signal switch to the steering column.

5. 5

   Install New Part

   Mount the new OEM replacement switch and secure it with the retaining hardware.

6. 6

   Reconnect

   Plug the electrical harness back into the switch, ensuring the connector clicks into place.

7. 7

   Reassemble

   Reinstall the steering column covers and trim panels.

8. 8

   Restore Power & Test

   Reconnect the battery negative cable. Start the tractor, test the left and right turn signals, and verify that fault code 002876.02 does not return.