DIY & Home Improvement

I'm still puzzled about the battery drawdown, but it's all back together, the battery holds a charge and starts, the ICU is repaired though I wonder if the thick solder will heat more than surrounding copper traces and burn the junctions, but hey you get what you get and do what's expedient.

I have no idea why disconnecting all those wire connectors into the ICU, and leaving them open and hanging out for 36 hours without disconnecting the battery led to dramatic voltage collapse. It's not like anyone on the videos I watched or the Haynes manual warning to disconnect the battery. Maybe it was in the disclaimed or general directions at the beginning of the chapter. The reason not to disconnect is that now I must reset the ECU - warm it up, pull the batter for 20 minutes, idled it for 10, turn it off and drive for a week or so.

Disconnect before you vivisect!