Page 1 of 2

Burnout car ls1 wiring

Posted: Sun Jul 22, 2018 1:31 pm
by big cams
Hi all

Ive put a vz ls1 in a vs stato and im haveing trubble getting it running ive got the vats removed for the bcm and have fitted a toggle switch to power up the ecm..but i have no injection pulse and no spark can any one help me out with...


I have power at pin 19..20..and 57.. On the blue plug
And earth on pin 1.. 40 on blue and red plug

Re: Burnout car ls1 wiring

Posted: Sun Jul 22, 2018 1:57 pm
by big cams
All so for got to add its a vz motor with vx loom and vy computer but have changed the electric throttle to cable so i could use the vx loom

Re: Burnout car ls1 wiring

Posted: Mon Jul 23, 2018 6:48 pm
by Dylan
What else have you powered up in the LS loom?

Re: Burnout car ls1 wiring

Posted: Mon Jul 23, 2018 9:10 pm
by pman92
So VATs has been disabled in the VY computer?

Have you connected the EFI relay to power injectors and coils?

Re: Burnout car ls1 wiring

Posted: Tue Jul 24, 2018 6:02 pm
by oldn64
pman92 wrote:So VATs has been disabled in the VY computer?

Have you connected the EFI relay to power injectors and coils?
Similar question really, When you turn the key to on (or in your case the switch) do you get the EFI pump prime and then stop, and thus get fuel pressure?

do you also get ignition when you crank?

Have you done a log while cranking etc to see what the ECU is trying to do and hence what the rest of the sensors are saying?

cheers
oldn

Re: Burnout car ls1 wiring

Posted: Mon Jul 30, 2018 9:21 am
by big cams
yea I have all the vats removed off the pcm
I got it to run when I powered up these 3 plugs ill up load soon
I put power to the pink and orange wires dose any one have the pinouts for these plugs some ppl say the c100/c101 and 105 and found they might b ye110 ye111 and ye112?
it sound like its running on one side only

Re: Burnout car ls1 wiring

Posted: Mon Jul 30, 2018 9:31 am
by big cams
I ended up putting power to one of the black ones and power to the grey one to the pink wires and orange wires. and that got it started and removed the power wires I had to the ecm so really all I need now is pinouts for these plugs

Re: Burnout car ls1 wiring

Posted: Mon Jul 30, 2018 9:37 am
by big cams
20180723_164635.jpg
20180723_164629.jpg
20180723_164603.jpg
20180723_164519.jpg
20180723_164552.jpg

Re: Burnout car ls1 wiring

Posted: Mon Jul 30, 2018 7:56 pm
by pman92
I have pinouts for those and ill be able to tell you what to do with what.
Info is at work though so I'll post it tomorrow

Re: Burnout car ls1 wiring

Posted: Mon Jul 30, 2018 8:06 pm
by pman92
Ill just add you shouldn't need to add any other powers or earths or tap in anywhere else in the engine loom. All your connections can be made directly at these 3 plugs. The engine harness can otherwise be completely untouched.

The 1 exception to this:
if it is auto and you are using the P/N switch to inhibit the start relay, and not using a properly linked BCM and PIM (which obviously you aren't since you had VATS disabled), you need to join 2 wires at the PIM connector. In a factory application the PIM will disable the starter relay if VATS fails (wrong key etc).

As I mentioned in the other post, the reason it won't run is almost certainly because you haven't connected the EFI relay. The injectors and coils will have no power. When you put power in these plugs you fed power directly to them