Strange fail or self-shutdown — logbook Toyota ist, 2002

A strange, mysterious and rather unpleasant fail happened to me today. The car suddenly stalled when I was standing in the parking lot and just making a phone call ... Although that's not the point - just op - and stalled. Unusually, I thought (I didn’t even have time to get upset), I turned the key - it started up. It stood for a bit - and again stalled. Crap!
He went out into the street, opened the hood… Scratched his turnips… Moved the fuses… Moved the wires… Started it — the infection works. And even turn left mastered! But I drove another 400 meters - and that's it, I got up ... more precisely, it stalled, coasted, right to the bus stop. I wanted to call - baaaa, the money on the phone ran out ... well, things ...
In short, what do I think mohayu — me to hypermarket "Family" (hello, Perm) to drive just nothing. Started - works. I drove to the parking lot, shied away from the hypermarket for half an hour (Internet, mobile - everything), I go out, started it from the signaling - it works. It doesn't seem like it's going to go numb!
I went to work. It’s about a kilometer to go to work, a couple of traffic lights and I’m there. And passed the exam again! Didn't get stuck again!
I was like in the parking lot at work, and kicked the wheels, and wiped the windshield, and my colleagues also held on to the wires - it doesn’t stall, after all! How did it happen?
By the way, a bad symptom, when it doesn’t need to come out, but how to identify it, you’ll reveal it.
After work, I quietly collected all the traffic jams on the compros (such a street), I drove like a kettle 40 km / h in the right lane (it’s more scary when the vacuum pump stalls, it seems like it doesn’t work, you’ll slow down, and all sorts of bad people on bekhas and Volkswagens only have time to change lanes abruptly before a slowly moving car). In general, despite this, drove without incident.

Diagnosis: not established. On the Internet they write something about the battery and contacts, tomorrow morning I’ll check everything and pull it, but as I already said, when it’s not necessary, there’s a problem), and then immediately to the service.