Toyota Repair: 1999 toyota echo 1.3litre, toyota echo, echo 1

Question
i have no negative power coming to my injectors
is there any way i can reset my ecu

Answer
The injectors are supposed to have battery voltage to one side of the connector with the key on, the other side is switched off/on to ground through the computer. Do you have constant voltage to one side on the injector connector? What is the problem with the engine?