B1360 – Ignition Run/Acc Circuit Open

The ODBII code B1360 indicates that there is an open circuit in the ignition run/accessory circuit, which means the system is not detecting the expected voltage or connection when the ignition is in the run or accessory position.

The severity of ODBII code B1360 is moderate.

Common Causes For: B1359 Ignition Run/Acc Circuit Failure

• Faulty ignition switch
• Damaged wiring or connectors
• Open circuit in the ignition run/acc circuit
• Blown fuse
• Faulty body control module (BCM)

Common misdiagnosis for B1360 Ignition Run/Acc Circuit Open

• Faulty ignition switch
• Bad wiring or connectors
• Defective body control module (BCM)
• Malfunctioning powertrain control module (PCM)
• Issues with the battery or charging system
• Faulty relays or fuses
• Incorrectly installed aftermarket accessories

Common Troubleshooting Steps

The OBD-II code B1360 indicates an issue with the ignition run/accessory circuit, specifically that it is open. This can lead to problems with the vehicle’s electrical systems, including starting issues or malfunctioning accessories. Here are some common troubleshooting steps to diagnose and resolve the issue:

• Check the Vehicle’s Battery:
• Ensure the battery is fully charged and in good condition. A weak or dead battery can cause various electrical issues.
• Inspect Fuses:
• Check the fuses related to the ignition and accessory circuits. A blown fuse can interrupt the circuit and trigger the code.
• Examine Wiring and Connectors:
• Inspect the wiring harness and connectors associated with the ignition system. Look for signs of damage, corrosion, or loose connections that could cause an open circuit.
• Test the Ignition Switch:
• The ignition switch itself may be faulty. Test the switch for continuity in the run and accessory positions. If it fails to provide continuity, it may need to be replaced.
• Check for Ground Issues:
• Ensure that all ground connections related to the ignition and accessory circuits are secure and free of corrosion. Poor grounding can lead to circuit issues.
• 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.
• Inspect the Body Control Module (BCM):
• If the vehicle is equipped with a BCM, check for any faults or issues with the module, as it may control the ignition and accessory circuits.
• Perform a Voltage Drop Test:
• Conduct a voltage drop test on the ignition circuit to identify any resistance or issues that may be causing the open circuit.
• Consult Wiring Diagrams:
• Refer to the vehicle’s wiring diagrams to understand the circuit layout and identify any potential points of failure.
• Professional Diagnosis:
• If the issue persists after performing these steps, consider seeking help from a professional mechanic or technician who can perform more advanced diagnostics. By following these steps, you should be able to identify and resolve the issue related to the B1360 code. Always remember to take necessary safety precautions when working on vehicle electrical systems.