Nubo wrote:...I'm curious as to which of the common L2 units does the diode test?
From what I've been able to glean from the forum, the only ones that DON'T test are the AV unit, and the Nissan L1 EVSE. So the dealer will never detect a bad diode without specifically testing for it with something other than their EVSE. Certainly most (all?) of the public ones like ChargePoint and Blink do. Of the home units, I know that SPX, Coulomb, Blink, and apparently GE EVSEs do.
P.S. It was nice that the dealer fixed that woman's LEAF for free, but it would be better if someone held GE responsible for repairing a LEAF instead. You can bet they would quickly get their act together.