Answer
Aug 25, 2024 - 01:58 AM
To reset the computer (PCM - Powertrain Control Module) on a 2015 Dodge Ram 1500, you can follow these steps:
Method 1: Disconnecting the Battery-
Turn Off the Ignition:
- Ensure the ignition is turned off, and remove the key from the ignition.
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Disconnect the Negative Battery Cable:
- Open the hood and locate the battery. Using a wrench, disconnect the negative battery cable (black cable) from the battery terminal.
- Ensure the cable is securely tucked away to prevent it from accidentally touching the terminal.
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Wait for 10-15 Minutes:
- Leave the battery disconnected for at least 10-15 minutes. This allows the capacitors in the PCM to discharge fully, effectively resetting the system.
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Reconnect the Negative Battery Cable:
- Reconnect the negative battery cable to the battery terminal and tighten it securely with a wrench.
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Start the Engine:
- Turn the ignition to the "ON" position and start the engine. The PCM should be reset, and any stored trouble codes should be cleared.
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Connect the OBD-II Scanner:
- Plug an OBD-II scanner into the vehicle's OBD-II port, located under the dashboard on the driver’s side.
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Turn on the Ignition:
- Turn the ignition key to the "ON" position without starting the engine.
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Access the Reset Option:
- Navigate through the scanner’s menu to find the option to reset or clear codes. Select this option to reset the PCM.
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Turn Off the Ignition:
- After the reset is complete, turn off the ignition and disconnect the OBD-II scanner.
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Start the Engine:
- Start the engine to confirm that the reset was successful and that any warning lights have been cleared.
Important Note: Resetting the PCM will clear any trouble codes and reset learned parameters. However, if there is an underlying issue, the problem may reoccur, and the check engine light could come back on. It’s essential to diagnose and repair any issues before resetting the PCM.
For detailed instructions specific to your vehicle, including any additional steps that might be necessary, consulting the vehicle’s repair manual is recommended. The manual provides comprehensive guidance on all aspects of vehicle maintenance and troubleshooting.
