WOMS
B code body Medium severity

B1339 Chime Input Request Circuit Short To Battery

The OBD2 code B1339 indicates a fault in the chime input request circuit, specifically that it is shorted to battery, which means there is an electrical short causing the circuit to receive constant power

Definition

The OBD2 code B1339 indicates a fault in the chime input request circuit, specifically that it is shorted to battery, which means there is an electrical short causing the circuit to receive constant power

Common causes

  • Shorted wiring or connectors
  • Faulty chime module
  • Malfunctioning ignition switch
  • Corroded or damaged connectors
  • Faulty body control module (BCM)
  • Improperly installed aftermarket accessories
  • Grounding issues

Common misdiagnoses

  • Faulty chime module
  • Shorted wiring harness
  • Defective ignition switch
  • Malfunctioning body control module (BCM)
  • Battery issues
  • Grounding problems
  • Faulty door switches

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 more context and help identify related issues

  2. 2. Inspect Wiring and Connectors

    Visually inspect the wiring and connectors associated with the chime input request circuit. Look for signs of damage, fraying, corrosion, or loose connections

  3. 3. Pay special attention to areas where the wiring may be exposed to heat or moisture

  4. 4. Test the Chime Module

    Locate the chime module (if applicable) and test it for proper operation. This may involve checking the power and ground connections to the module

  5. 5. If the module is faulty, it may need to be replaced

  6. 6. Check for Short Circuits

    Use a multimeter to check for continuity in the chime input request circuit. Look for any shorts to battery voltage

  7. 7. Disconnect the battery and test the circuit for continuity to ground and to battery voltage. A short to battery will show continuity where it shouldn't

  8. 8. Inspect Related Components

    Check other components that may be connected to the chime system, such as door switches, seatbelt sensors, or other warning systems. A malfunction in these components can sometimes trigger the B1339 code

  9. 9. Repair or Replace Damaged Components

    If any damaged wiring, connectors, or components are found during inspection, repair or replace them as necessary

  10. 10. Clear the Codes and Test Drive

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

  11. 11. Seek Professional Help

    If you are unable to resolve the issue after following these steps, consider seeking assistance from a qualified mechanic or automotive technician who has experience with electrical systems. By following these troubleshooting steps, you should be able to identify and resolve the issue related to the B1339 code