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ECU Hard Battery Reset - Troubleshooting

 
Ernest
Trusted Member Moderator

My ECU still has trouble codes, idle issues, and/or not starting:

  1. If the vehicle’s battery was not disconnected prior to removal of the ECU, it may inadvertently blow a fuse, a relay near the fuse box, or a fuse in one of the multiple fuse boxes in the vehicle.
  2. Often times there are communication issues present if the unit is installed back in the vehicle. One of the fastest and easiest ways to clear any soft codes in the vehicle is to do a simple battery reset:

                        - Disconnect the battery cables

                        - Clamp the cables together with the terminals touching (off the battery!)

                        - Leave the cables maintained in this position for 30min. and then re-install

        *This should clear any soft codes and communication issues with the vehicle’s PCI bus.*

This topic was modified 3 years ago by Ernest
This topic was modified 2 years ago by Ernest
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Topic starter Posted : 04/18/2022 9:47 pm
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