B1339 – Chime Input Request Circuit Short To Battery

The ODBII 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.

The severity of ODBII code B1339 is moderate.

Common Causes For: B1338 Door Ajar RR Circuit Short To Ground

• 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 misdiagnosis for B1339 Chime Input Request Circuit Short To Battery

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

Common Troubleshooting Steps

The OBD-II code B1339 indicates a problem with the chime input request circuit, specifically a short to battery. This code is often associated with issues in the vehicle’s chime or alert system, which is responsible for providing audible warnings for various conditions (like leaving the lights on, seatbelt reminders, etc.). Here are some common troubleshooting steps to diagnose and resolve the issue:

• 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.
• 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.
• Pay special attention to areas where the wiring may be exposed to heat or moisture.
• 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.
• If the module is faulty, it may need to be replaced.
• Check for Short Circuits: Use a multimeter to check for continuity in the chime input request circuit. Look for any shorts to battery voltage.
• 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.
• 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.
• Repair or Replace Damaged Components: If any damaged wiring, connectors, or components are found during inspection, repair or replace them as necessary.
• 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.
• Consult Service Manual: If the issue persists, consult the vehicle’s service manual for specific diagnostic procedures related to the chime input request circuit. This may provide additional insights or steps tailored to your vehicle model.
• 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.