WOMS
P code powertrain Medium severity

P1567 Speed Control Output Circuit Continuity

The OBD2 code P1567 indicates a problem with the continuity of the speed control output circuit, which may affect the operation of the vehicle's cruise control system

Definition

The OBD2 code P1567 indicates a problem with the continuity of the speed control output circuit, which may affect the operation of the vehicle's cruise control system

Common causes

  • Faulty throttle actuator
  • Damaged wiring or connectors
  • Failed cruise control module
  • Malfunctioning accelerator pedal position sensor
  • Poor ground connection
  • Short circuit in the speed control output circuit
  • Open circuit in the speed control output circuit

Common misdiagnoses

  • Throttle position sensor issues
  • Cruise control module failure
  • Wiring harness problems
  • Faulty brake switch
  • Accelerator pedal position sensor malfunction
  • Engine control module (ECM) faults
  • Vacuum leaks
  • Malfunctioning speed sensor

Troubleshooting steps

  1. 1. Check for Additional Codes

    Use an OBD-II scanner to check for any other trouble codes that may be present. This can provide additional context and help identify related issues

  2. 2. Inspect the Wiring and Connectors

    Visually inspect the wiring and connectors associated with the cruise control system. Look for signs of damage, corrosion, or loose connections

  3. 3. Pay special attention to the wiring harness that connects to the cruise control module and the throttle body

  4. 4. Test the Cruise Control Switch

    Check the cruise control switch for proper operation. Ensure that it is functioning correctly and that there are no internal faults

  5. 5. Use a multimeter to test the switch for continuity when pressed

  6. 6. Check the Throttle Position Sensor (TPS)

    The throttle position sensor plays a crucial role in the cruise control system. Test the TPS for proper voltage and resistance values according to the manufacturer's specifications

  7. 7. Inspect the wiring and connectors related to the TPS for any issues

  8. 8. Inspect the Cruise Control Module

    If the wiring and switches are in good condition, the cruise control module itself may be faulty. Check for any signs of damage or corrosion

  9. 9. If possible, test the module with a scan tool to see if it is receiving and sending the correct signals

  10. 10. Check the Brake Pedal Switch

    The brake pedal switch can interrupt the cruise control system when the brake is applied. Ensure that the switch is functioning correctly and that it is not stuck or malfunctioning

  11. 11. Test the Vehicle Speed Sensor (VSS)

    The vehicle speed sensor provides speed information to the cruise control system. Test the VSS for proper operation and ensure that it is sending the correct signals to the engine control module (ECM)

  12. 12. Inspect the Fuses

    Check the fuses related to the cruise control system. A blown fuse can cause the system to malfunction

  13. 13. Perform a System Reset

    After addressing any issues found, clear the trouble codes using the OBD-II scanner and take the vehicle for a test drive to see if the code returns

  14. 14. Consult the Service Manual

    If the issue persists, consult the vehicle's service manual for specific troubleshooting procedures and specifications related to the cruise control system.1

  15. 15. Seek Professional Help

    If you are unable to resolve the issue after performing these steps, it may be best to consult a professional mechanic or technician who has experience with the specific make and model of your vehicle. By following these troubleshooting steps, you should be able to identify and resolve the issue related to the P1567 code