WOMS
B code body Medium severity

B1560 Door Lock Cylinder Circuit Open

The OBD2 code B1560 indicates that there is an open circuit in the door lock cylinder, which means the vehicle's system is not detecting the expected electrical signal from the door lock cylinder

Definition

The OBD2 code B1560 indicates that there is an open circuit in the door lock cylinder, which means the vehicle's system is not detecting the expected electrical signal from the door lock cylinder

Common causes

  • Faulty door lock cylinder
  • Damaged wiring or connectors
  • Poor ground connection
  • Malfunctioning door lock actuator
  • Corroded terminals
  • Broken or disconnected harness
  • Faulty body control module (BCM)

Common misdiagnoses

  • Faulty door lock actuator
  • Wiring issues or shorts in the door lock circuit
  • Malfunctioning body control module (BCM)
  • Defective keyless entry system
  • Ignition switch problems
  • Faulty door lock switch
  • Issues with the vehicle's security system

Troubleshooting steps

  1. 1. Check the Vehicle's Manual

    Refer to the vehicle's service manual for specific information related to the B1560 code, including wiring diagrams and component locations

  2. 2. Visual Inspection

    Wiring and Connectors: Inspect the wiring and connectors associated with the door lock cylinder circuit for any signs of damage, corrosion, or loose connections

  3. 3. Door Lock Cylinder

    Check the door lock cylinder itself for any physical damage or obstruction

  4. 4. Test the Door Lock Cylinder

    Use a multimeter to test the door lock cylinder for continuity. If the circuit is open, it may indicate a faulty lock cylinder or wiring issue

  5. 5. Check for Faulty Components

    Door Lock Actuator: Test the door lock actuator for proper operation. A malfunctioning actuator can cause the circuit to appear open

  6. 6. Body Control Module (BCM)

    The BCM controls the door lock functions. If it is malfunctioning, it may not send the correct signals to the door lock cylinder

  7. 7. Inspect Fuses and Relays

    Check the fuses and relays associated with the door lock system. A blown fuse or faulty relay can interrupt the circuit

  8. 8. Scan for Additional Codes

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

  9. 9. Perform a Circuit Test

    With the ignition on, use a multimeter to check for voltage at the door lock cylinder connector. If there is no voltage, trace the wiring back to the BCM or relevant control module

  10. 10. Repair or Replace Faulty Components

    Based on your findings, repair or replace any damaged wiring, connectors, or components (like the door lock cylinder or actuator)

  11. 11. Clear the Codes

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

  12. 12. Consult a Professional

    If the issue persists after following these steps, it may be best to consult a professional mechanic or technician who has experience with your specific vehicle make and model.Additional Tips: - Always ensure that the vehicle's battery is in good condition, as low voltage can sometimes cause erratic behavior in electronic systems. - If you are not comfortable performing these steps, consider seeking help from a qualified technician. By following these troubleshooting steps, you should be able to identify and resolve the issue related to the B1560 code