Toyota_F1

iTrader: (1)

After swapping out my snow tires I was ready to hop in my SC for some exciting driving but it will not crank at all. Seemed like a dead battery, no interior lights, no door lights, chimes, nothing... tossed the battery charger on it in start mode or try jumping it and all i get is a buzzing from the fusebox around the EFI Main Relay...

Bad relay? Something else I'm missing? Help!

suprakidxx

iTrader: (1)

let it charge up on 2amp or your lowest setting for 1-2 hours then check if you have any lights again, or if you have multi meter check voltage on batt terminals. if you have 12.5 ~ 13.5 your car should have no problem turning starter over.

suprakidxx

iTrader: (1)

im not familiar with sc400 but i work at a alternator and starter shop and its almost always simple.
if you have a trouble light you can put it between the neg terminal on batt and other end to the ground cable so the trouble light is in series with car, then if it lights up and you have all doors and switches off then there is a short that caused your batt to die. the relay maybe chattering due to insufficient power to hold in the contacts.