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MPaulHolmes · 04-27-2010, 10:40 AM

Could you remove the LEM from the circuit, and apply 5v power to the LEM, and then check Vref on the LEM? It should be approximately 2.5v. Also, Vout should read 2.5v too in that situation, because the current would be 0 amps. I know the cable is probably soldered to the control board, so it might mean making a new cable. If you are seeing 0v on Vout, then:

1. There's a short on the control board, so Vout is connected to system ground
2. LEM is broken.
3. Wrong LEM. (I don't think it's the wrong LEM if you were driving around with it)

04-27-2010, 10:40 AM	#3368 (permalink)
MPaulHolmes PaulH Join Date: Feb 2008 Location: Maricopa, AZ (sort of. Actually outside of town) Posts: 3,832 Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000 Thanks: 1,368 Thanked 1,202 Times in 765 Posts	Could you remove the LEM from the circuit, and apply 5v power to the LEM, and then check Vref on the LEM? It should be approximately 2.5v. Also, Vout should read 2.5v too in that situation, because the current would be 0 amps. I know the cable is probably soldered to the control board, so it might mean making a new cable. If you are seeing 0v on Vout, then: 1. There's a short on the control board, so Vout is connected to system ground 2. LEM is broken. 3. Wrong LEM. (I don't think it's the wrong LEM if you were driving around with it) __________________ kits and boards Last edited by MPaulHolmes; 04-27-2010 at 11:02 AM..