The injectors are switched on via separate earth pulses from the ecu. It is actually possible to touch these wires to earth quickly and force the injectors to click / work. It is common for CA injectors to stick closed is the motor has not been started for a while.

If you are using stock fuse box also check the EGI fuse and relay is are working, Also the IGN relay. his are interlinked and feed volts to coils and injectors.

Makes more sense if you have schematic of CA engine.

If all this checks OK, try your ecu in some one elses car. But I would check that the 12 volt feeds are getting to coils and injectors.