WOMS
B code body Medium severity

B1206 EIC Switch-1 Assembly Circuit Open

The OBD2 code B1206 EIC Switch-1 Assembly Circuit Open indicates a malfunction in the electrical circuit of the EIC (Electronic Ignition Control) switch, specifically that the circuit is open or not completing properly

Definition

The OBD2 code B1206 EIC Switch-1 Assembly Circuit Open indicates a malfunction in the electrical circuit of the EIC (Electronic Ignition Control) switch, specifically that the circuit is open or not completing properly

Common causes

  • Open circuit in the wiring harness
  • Faulty EIC switch
  • Poor electrical connections
  • Damaged connectors
  • Short circuit in the circuit
  • Faulty body control module (BCM)

Common misdiagnoses

  • Faulty body control module (BCM)
  • Wiring issues or shorts in the harness
  • Defective EIC switch or assembly
  • Incorrectly diagnosed airbag system faults
  • Misinterpretation of other body control codes
  • Battery or power supply issues affecting the circuit
  • Faulty connectors or terminals in the circuit

Troubleshooting steps

  1. 1. Check the Vehicle's Manual

    Refer to the vehicle's service manual for specific information related to the B1206 code, including wiring diagrams and component locations

  2. 2. Visual Inspection

  3. 3. Inspect the wiring and connectors associated with the EIC switch. Look for any signs of damage, corrosion, or loose connections

  4. 4. Check for any frayed wires or broken connectors that could cause an open circuit

  5. 5. Test the EIC Switch

  6. 6. If accessible, test the EIC switch for continuity using a multimeter. Ensure that it operates correctly when activated

  7. 7. If the switch is faulty, replace it

  8. 8. Check for Shorts or Opens

  9. 9. Use a multimeter to check for continuity in the wiring harness leading to the EIC switch. Look for any breaks or shorts in the circuit

  10. 10. If you find an open circuit, trace the wiring back to locate the break

  11. 11. Inspect Related Components

  12. 12. Check any related components that may affect the EIC switch operation, such as relays or fuses. Ensure they are functioning properly

  13. 13. Scan for Additional Codes

  14. 14. Use an OBD-II scanner to check for any additional trouble codes that may provide more context or indicate related issues

  15. 15. Clear the Code

  16. 16. After performing any repairs, clear the trouble code using an OBD-II scanner and take the vehicle for a test drive to see if the code returns

  17. 17. Consult a Professional

  18. 18. If the issue persists after performing the above steps, it may be necessary to consult a professional mechanic or technician who has experience with your specific vehicle make and model. By following these steps, you should be able to identify and resolve the issue related to the B1206 OBD-II code