Nissan Repair Questions? Ask a Mechanic for Answers ASAP
Hey there, thanks for the question.
can you tell me a little bit about what's going on that led you to the ECM relay in the first place please?
The injectors do not receive power from the ECM relay. they are fused directly. They receive a ground from the ECM itself which does receive power through the ECM relay. The coils also recieve there power through the ECM relay.
if the white/red and the red/whites have power then your fuses are fine.
your problem is the coil side of the ECM is not being grounded by the ECM and not closing the relay switches or the relay itself is bad.
The only likely reasons that the ECM would not ground the coil side are as follows. The likelyness of them being the culprit is in the order they are listed.
1. Camshaft position sensor
2. timing off / timing belt broken
3. crank sensors.
If you need further assistance just ask and I will be happy to help, if not please just be sure to leave a kind rating.
Because if the ECM cannot determine engine position (timing) then it will release the ground from the ECM relay to cut spark and protect the engine from damage.
on the ECM relay?
the blue/black wire that runs from the ECm to the coil side of the ECM relay switches it on and off. The ECM uses a ground signal to do so.
If you know the mechanical timing is good then yes. Did you check the timing when replacing the bottom crank sensor?
yes, I am referring to MECHANICAL timing not ignition timing.
what does the intake timing look like on the scanner when cranking the engine?