vs manual ecu
- VL400
- Posts: 4991
- Joined: Sun Mar 01, 2009 2:54 pm
- cars: VL Calais and Toyota Landcruiser. Plus some toys :)
- Location: Perth, WA
- Contact:
Re: vs manual ecu
It will work fine for this test, thats all I did and had TP showing 0-200kph on D2 from a 12v square wave.
Re: vs manual ecu
ok i got a chance to do some testing and the pcm is doing as it should
i even get a flicker on the VSS guage in TP when tapping D2 to 12v
but still nothing with the VSS so can anyone name these wires
EG: blue= pink/blue-12v
green= purple/white-sig to D2
black= black/white-ground
i even get a flicker on the VSS guage in TP when tapping D2 to 12v
but still nothing with the VSS so can anyone name these wires
EG: blue= pink/blue-12v
green= purple/white-sig to D2
black= black/white-ground
Re: vs manual ecu
the speed sensor is ok but it not the way i was thinking
D2 pad is 0v and the inverse pad is 5v
put 12v on D2 pin i get 5v on pad and 0v on inverse pad
so the pcm is doing its thing
but when i play with the VSS and a LED the VSS is switching to ground
so its trying to pull D2 low not high as i was thinking it would
D2 pad is 0v and the inverse pad is 5v
put 12v on D2 pin i get 5v on pad and 0v on inverse pad
so the pcm is doing its thing
but when i play with the VSS and a LED the VSS is switching to ground
so its trying to pull D2 low not high as i was thinking it would
- VL400
- Posts: 4991
- Joined: Sun Mar 01, 2009 2:54 pm
- cars: VL Calais and Toyota Landcruiser. Plus some toys :)
- Location: Perth, WA
- Contact:
Re: vs manual ecu
Thats actually the way the factory diagram shows it, as a ground switch Will work out a fix for it If you want a quick fix try a 1k pull up resistor between the blue 12v and green signal wires, should get it working.
Re: vs manual ecu
haha so its not me
if the inverse pad is pulled low will that make the D2 pad high
or is it D2 going high pushing the inverse pad low
would these 2 spots in white be of any use
if the inverse pad is pulled low will that make the D2 pad high
or is it D2 going high pushing the inverse pad low
would these 2 spots in white be of any use
- VL400
- Posts: 4991
- Joined: Sun Mar 01, 2009 2:54 pm
- cars: VL Calais and Toyota Landcruiser. Plus some toys :)
- Location: Perth, WA
- Contact:
Re: vs manual ecu
Those two resistors are important Turns out U5 is not a buffer chip but looks like an op amp setup as a comparator with hysteresis. And was missing a pull-up resistor also. This should work a little better I hope...
Problem solvered
Problem solvered
Re: vs manual ecu
haha i will give it a shot later tonight
EDIT: i can confirm working on the bench with a VSS
EDIT: i can confirm working on the bench with a VSS
Re: vs manual ecu
a in car test and im over the moon
vl400 now you really are the man
vl400 now you really are the man
- Holden202T
- Posts: 10311
- Joined: Sat Feb 28, 2009 9:05 pm
- Location: Tenambit, NSW
- Contact:
Re: vs manual ecu
nice work all involved!
No matter what the question is, the answer is always more horsepower!
Just starting out? Have a read of the getting started guide
Basic tuning of a delco ECM with $12P thread
Advanced tuning of a delco ECM with $12P thread
Just starting out? Have a read of the getting started guide
Basic tuning of a delco ECM with $12P thread
Advanced tuning of a delco ECM with $12P thread
- VL400
- Posts: 4991
- Joined: Sun Mar 01, 2009 2:54 pm
- cars: VL Calais and Toyota Landcruiser. Plus some toys :)
- Location: Perth, WA
- Contact:
Re: vs manual ecu
Awesome, makes conversions a little easier now Looks like the PCM is happy with it too, no drop-outs or spikes in there.