E38 VATS will not disable

[tk-mpl]

I am kind of wondering cause the PCM is not seeing a "crank request" that it isn't energizing the coils or the injectors...

[gmh308]

You could set the EFILive scantool up to look at the injectors and coils and see what they are doing.

[tk-mpl]

I did and they don't change at all while cranking..

[gmh308]

I did and they don't change at all while cranking..

When I have scanned without VATS disabled coils and injectors dont change status.

With VATS disable working they both show activity.

Have you got full time 12V on pin 20 of body connector and 12V on both pin 19 and 47 with ignition in the run and start positions?

[VEGASROBBI]

Seems like this is an issue with the 07' 5.3 Silverado's. On my "M" code engine the ECM starter enable wire powers the starter relay trigger, it does not ground it as you would expect; so I ran it through an 80 ohm resistor to ground.

With this wire left open I would get spark but no injector pulse.

[tk-mpl]

When I have scanned without VATS disabled coils and injectors dont change status.

With VATS disable working they both show activity.

Have you got full time 12V on pin 20 of body connector and 12V on both pin 19 and 47 with ignition in the run and start positions?

not sure what you mean about "body connector". All I got was engine and trans componets..
Trevor

[tk-mpl]

Just verified 12V on 19,20,47 on C1 of PCM with key on and while in crank position..
Trevor

[gmh308]

Seems like this is an issue with the 07' 5.3 Silverado's. On my "M" code engine the ECM starter enable wire powers the starter relay trigger, it does not ground it as you would expect; so I ran it through an 80 ohm resistor to ground.

With this wire left open I would get spark but no injector pulse.

Which ECM pin does that connect to? Have looked at same for pin 57 of C1/J1 sometimes called "start control relay" and it appears to make no difference but it would depend on OS.

[gmh308]

Just verified 12V on 19,20,47 on C1 of PCM with key on and while in crank position..
Trevor

Ok cool. Not uncommon to see 47 missing.

[Tordne]

tk-mpl,

Just to cover off the simple stuff. You have applied the VATS Patch in the calibration and done the necessary full-flash, correct?