Originally Posted by toyota rebirth
i can get the pump to work with the test plug but when you turn the key it dont come on. tried different ecu still nothing any suggestions.
The fuel pump doesn't normally run with the key on, unless you have the test jumper installed:
Only way it runs is if the AFM vane is held open. Test that AFM and if that is OK, then check the circuit opening relay (there is no fuel pump relay, per se).