Injectors not firing, what could be wrong?

[86_sports_1jz]

okay i got the fuel pump working now, there is spark, everything else seems to be working but the injectors are not working! What could be wrong? Since the injectors are not firing could it be the harness wire that i wired wrong somewhere? no codes are thrown related to the injectors, just tps code, oxygen sensor code, turbo pressure code, coolant temp signal code, and i think thats it. can anyone give me anyadvice before i decide to redo the harness wire?

 

[annoyingrob]

get a multimeter, and make sure the signals are coming out of the ECU for the injectors. That'll save you from ripping apart the harness.

It's possible that one of the cam position sensors is not functioning properly, but that would probably throw a code.

It's also possible that the 12V line going to the injectors isn't hooked up.

 

[86_sports_1jz]

i did that but there seems to be no power from the ecu to the injectors and viseversa. its also not throwing any codes for the crank or cam sensors.

 

[mk3_dude]

check this out, it may help some...

http://supraforums.com/forum/showthread.php?p=5584774#post5584774

 

[aphxero]

inj dont get power from ecu duh

 

[Rich]

inj dont get power from ecu duh

Yep, he's right. The ecu pulls them to ground, so with the ignition in the 'on' position you should measure 12V to ground on both pins of the injectors, clips need to stay on.
But, you better fix the errors which throw the codes first, they might be related, but then again they might not, at this point you don't know.

 

[86_sports_1jz]

Yep, he's right. The ecu pulls them to ground, so with the ignition in the 'on' position you should measure 12V to ground on both pins of the injectors, clips need to stay on.
But, you better fix the errors which throw the codes first, they might be related, but then again they might not, at this point you don't know.

alright i'll fix them and thanks