Tried to measure resistance [ same H F Meter shown . Only getting .003 - . 005 this is an average of all 3 keys . I measured resistance the long way, inverted key, got same reading .. could the resistance be that low ? I tried on two different HF VOMS and all 3 keys, readings are consistent . Meter set at 200 K Ohms . Told to cycle door keys, no good, seemed pointless, as door key has no resistor . [ Prob. he was thinking of a newer system , when told to cycle doors ] . Should one lead be grounded, and other placed on resistors end . I tried measuring end to end to get .005 not .0 ohms
Read through the resistor side to side (one lead touching the resistor on one side of the key, the other lead touching the resistor on the other side of the key). Don't let the leads touch the key blade.
Yeah when I hear about this I always figured it was the lock cylinder contacts that wore down, not the key. In any case that bypass will work, should you run into the same problem down the lie with the second key.