B1362 – Ignition Run/Acc Circuit Short To Ground
The ODBII code B1362 indicates a short circuit to ground in the ignition run/accessory circuit, which can disrupt the proper functioning of the vehicle’s electrical systems related to ignition and accessory power.
The severity of ODBII code B1362 is moderate to high.
Common Causes For: B1361 Ignition Run/Acc Circuit Short To Battery
- Damaged wiring or connectors
- Shorted ignition switch
- Faulty ignition relay
- Corroded or loose connections
- Malfunctioning body control module (BCM)
- Aftermarket modifications or installations
- Faulty fuses or fuse box issues
Common misdiagnosis for B1362 Ignition Run/Acc Circuit Short To Ground
- Faulty ignition switch
- Shorted wiring harness
- Defective body control module (BCM)
- Malfunctioning relay
- Bad ground connections
- Faulty fuses
- Incorrectly installed aftermarket accessories
- Defective ignition coil
- Issues with the powertrain control module (PCM)
- Battery connection problems
Common Troubleshooting Steps
The OBD-II code B1362 indicates a problem with the ignition run/accessory circuit, specifically a short to ground. This can affect the vehicle’s electrical systems and may prevent the engine from starting or cause other electrical issues. Here are some common troubleshooting steps to diagnose and resolve this issue:
- Check the Vehicle’s Battery: Ensure the battery is fully charged and in good condition. A weak battery can cause various electrical issues.
- Inspect Fuses: Check the fuses related to the ignition and accessory circuits. A blown fuse can indicate a short circuit or other electrical issues.
- Visual Inspection of Wiring: Inspect the wiring harnesses and connectors associated with the ignition and accessory circuits for any signs of damage, fraying, or corrosion.
- Look for any exposed wires that may be touching the vehicle’s chassis or other components, which could cause a short to ground.
- Check Ground Connections: Ensure that all ground connections related to the ignition system are clean, tight, and free of corrosion. Poor ground connections can lead to electrical issues.
- Test the Ignition Switch: The ignition switch itself may be faulty. Test the ignition switch for proper operation and continuity. If it is defective, it may need to be replaced.
- Use a Multimeter: Use a multimeter to check for continuity in the ignition run/accessory circuit. This can help identify if there is a short to ground.
- Measure the resistance in the circuit to see if it is within the manufacturer’s specifications.
- Check for Short Circuits: Disconnect components in the ignition circuit one at a time (e.g., relays, modules) to isolate the short. This can help identify the specific component causing the issue.
- 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 Related Components: Check other components that may be connected to the ignition circuit, such as relays, control modules, and sensors, for faults.
- Consult Wiring Diagrams: Refer to the vehicle’s wiring diagrams to understand the circuit layout and identify potential problem areas.1
- Professional Diagnosis: If the issue persists after performing these steps, consider seeking help from a professional mechanic or automotive technician who can perform more advanced diagnostics.Conclusion By following these troubleshooting steps, you should be able to identify and resolve the issue related to the B1362 code. Always ensure safety precautions are taken when working with the vehicle’s electrical system.