91 300zx 2+2 tt

[Rigrey]

Hello i was wondering i just got done with my timing belt change and taking and putting on the plenum i also changed the efi harness but the main connector to the ecu broke but i put it back together. But im lost right now because no dash light is turning on and no radio or anything is coming on when i swith the car to on position can someone please help me figure out the problem

[nissanfreak12]

Check your fuses?

Does the car start?

Battery connection?

Ground connection?

What do you mean you "broke" the main harness? This kind of thing is very difficult to help over the internet because we are not there to see what you did or if you unplugged anything while changing the harness. Best I can tell you is trace back your steps, something is either unplugged or not connected properly

[Rigrey]

So the main blue connector that connects to the ecu broke in half but i glued it back together and the car does not start theres like no sign of life i turn the key and nothing happens no dash lights come or nothing and i just changed the battery and the battery terminals and still nothing happens

[DCaff300ZX]

Ummmmm, you need to replace that ECU connector...and as nissanfreak says obviously there is a short or lack of continuity somewhere in your path of work to sort out, we all have them and it's a PITA, but part of the job troubleshooting your work. Goes towards the idea of using known, proven methods (fsm tests/procedures) and proper procedures for broken parts which are easily traced for our own errors, and hidden further problems...

[Rigrey]

Ive checked my fuses and there good and ive also checked mostly all my connectors and there good i honestly am runnign out of things it might be so im thinking its the main harness connector can i just connect the wires manually to the ecu without using the? Blue pin connecter thing

[itsa300zx]

Ive got a couple blue ecu harness connectors, send me an emai, if interested.

[DCaff300ZX]

^^^^Do this!

[Rigrey]

I ordered one from z1 motorsport

[Rigrey]

Wait but is the harness even connected to any dash connections which can cause it not turn on?

[nissanfreak12]

Are you absolutely sure your ignition switch is getting power? You can test this by taking the coversoff behind steering wheel and unscrewing the module behind the key assembly. Its an easy test with a multimeter.