Help my Gryphon does NOT work

[Sburn]

Originally Posted by JackandJanet

THAT'S pretty amazing! I wouldn't have thought there would be a voltage converter in the Gryphon. Still, I can see how this "feature" keeps the EPROM from being programmed accidentally.

- Jack

The DC-DC converter is probably a single-chip that sells for a buck or two in quantity. But I'm not busting open my Gryphon to find out.


I'm fine with: Input 12 V ---> |Magic Happens| ---> Output 18V


Good, safe idea from the Blue Oval folks. You've probably noticed during programming that the gauges, fuel pump, etc all shut off. Imagine a plain 12 volts getting shorted onto the programming line from some miswired or faulty aftermarket scanner while somebody is driving. Or a very bad stereo installation. PCM sees that misdirected 12V and shuts down all inputs and outputs thinking it's getting reprogrammed. Not going to be a good ending in a moving vehicle. Requiring 6 volts above the normal 12V to put the PCM into that mode pretty much rules out the possibility of all but an intended PCM shutdown.