electrical diagnostic practices/procedures

[jick.cejoco]

agree.. in my ctek charger, desulfation mode voltage is at 15V, which maybe too high to modern electronics running at 14.5volts

some toyota cars of the 90s, the system voltage can go as high as 15.1 volts without damage to the systems. the keep alive memory (KAM) such as electronic tuned radio, pcm memory, body control module memory, immobilizer , can be kept by using a memory saver conndcted either to the DLC3 or to the BAT of the alternator with a 12 volt battery. doing this, the doors closed, all swiltches turned off.