Lectron High Resistance Connection at J1772 Pins

The Lectron J1772 connector becomes hot or discolored during charging; the vehicle inlet may also feel warm.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Worn or oxidized power pins in the Lectron connector, loose crimp connections inside the handle, or misalignment between the connector and the vehicle inlet.

How to Fix / Troubleshooting

Safety first: Stop charging and allow the connector to cool. Do not continue using a connector that becomes excessively hot.

  • 1. Visual inspection: Examine the metal pins in the Lectron J1772 handle for discoloration, pitting, or deformation. Check the plastic around the pins for signs of melting.
  • 2. Check insertion feel: Plug the connector into the vehicle and note whether it seats firmly with a solid click. A loose fit can cause arcing and heat.
  • 3. Clean contacts: Use electrical contact cleaner and a lint-free swab to gently clean the pins. Do not use abrasives.

Resolution: If pins are damaged or the connector remains loose or hot, replace the entire Lectron J1772 cable assembly. Also, have the vehicle inlet inspected if it shows damage.

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Repair Difficulty

Medium 3/5

Required Part

Lectron J1772 Charge Cable Assembly
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