Tesla LDU Reverse Polarity

Topics concerning the Tesla front and rear drive unit drop-in board
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eGrandpa
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Tesla LDU Reverse Polarity

Post by eGrandpa »

I accidently reversed my HV polarity going to my contactors during my last bench test using only 36v. The precharge relay and ignition contactor activated, but It almost immediately blew a high current fuse. After discovering my stupid mistake, the system will no longer startup and activate the precharge relay and ignition contactor. All the low-voltage wiring seems fine as that is run of a separate 12v. Any insight on what is wrong? Did I fry the capacitors?
eGrandpa
Posts: 24
Joined: Tue Jun 21, 2022 11:38 pm
Location: Michigan, USA
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Re: Tesla LDU Reverse Polarity

Post by eGrandpa »

No damage done. After calming down I double checked everything and found a loose low voltage ground to the LDU control.
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