OBD-II DTC B1372 – Illuminated Entry Relay Circuit Open
DTC B1372 meaning
DTC B1372 refers to an issue with the Illuminated Entry Relay Circuit, indicating that there is an open circuit in the relay responsible for controlling the illuminated entry feature. This feature typically activates the interior lights when the vehicle is unlocked or when a door is opened. An open circuit means that the electrical path is broken, preventing the relay from functioning properly.
DTC B1372 symptoms
Common symptoms associated with DTC B1372 may include:
- Interior lights not illuminating when doors are opened or unlocked.
- Failure of the illuminated entry feature to activate.
- Possible issues with other electrical components related to the entry system.
DTC B1372 causes
Several factors can lead to the triggering of DTC B1372, including:
- A faulty illuminated entry relay.
- Wiring issues such as frayed or broken wires in the circuit.
- Corrosion or poor connections at the relay or wiring harness.
- Faulty door switches that do not signal the system correctly.
DTC B1372 seriousness
The seriousness of DTC B1372 can vary. While it may not affect the vehicle’s drivability, it can lead to inconvenience due to the lack of interior lighting when entering or exiting the vehicle. Additionally, it may indicate underlying electrical issues that could affect other systems if not addressed.
How to diagnose DTC B1372
To diagnose DTC B1372, follow these steps:
- Use an OBD-II scanner to confirm the presence of the DTC.
- Inspect the illuminated entry relay for any visible damage or corrosion.
- Check the wiring and connectors associated with the relay for continuity and signs of wear.
- Test the door switches to ensure they are functioning correctly.
- Perform a continuity test on the relay circuit to identify any breaks.
How to fix DTC B1372 step-by-step instructions
To fix DTC B1372, follow these steps:
- Replace the illuminated entry relay if it is found to be faulty.
- Repair or replace any damaged wiring or connectors in the circuit.
- Clean any corrosion from connectors and ensure a secure fit.
- Test and replace any faulty door switches as necessary.
- Clear the DTC using an OBD-II scanner and test the system to ensure proper operation.
How to erase DTC B1372
To erase DTC B1372, follow these steps:
- Connect an OBD-II scanner to the vehicle’s diagnostic port.
- Turn on the ignition without starting the engine.
- Navigate to the DTC menu on the scanner.
- Select the option to clear or erase the codes.
- Confirm the action and wait for the scanner to complete the process.
- Disconnect the scanner and start the vehicle to check if the code reappears.
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