Myvi is chain la.

If belt putus is not timing but the accessories belt.

that 1 is timing chain putus

myvi using timing chain
mybe V belt yg putus

Also when the accessories belt putus, the car will have no power steering, aircon and alternator hence no power. But the engine still runs from the battery. Once the battery kaput, the engine will die.

Timing chain will control both water and oil pumps so the engine will survive long enough to get it fix at the workshop.