ALDL ECU's

[Tazzi]

Ahhh.. it can be tomorrows job!.

Iv tested VS V6, VT V6, flash VX V6 and VY V6 which are all working great.
Untested so far is VR V6/V8, VT 5.0L V8, VS V8 and VS S3 V8.

Looks like the VR ecus are pretty cheap on ebay so I can grab one to test on.. but finding the VT/VS stuff seems to be an issue. Might just need to assume its all working until one pops up!

[VL400]

The1s enhnaced bin is for a VS series 3 V8 with MAF, the VS V8 series 1 and 2 with MAP use the same ADX as VR V6/V8. As you have found, GM liked to recycle before it was cool!

I can test anything you want for VT and VS PCMs. If you can test a VT V6 you can test VT V8 and VS3 V8, VT V6 PCM can be used for bench testing them.

[Tazzi]

The1s enhnaced bin is for a VS series 3 V8 with MAF, the VS V8 series 1 and 2 with MAP use the same ADX as VR V6/V8. As you have found, GM liked to recycle before it was cool!

I can test anything you want for VT and VS PCMs. If you can test a VT V6 you can test VT V8 and VS3 V8, VT V6 PCM can be used for bench testing them.

Alright.. sooo... 300th time is a charm..
So Holden's.. recycling.. should be along the lines of:
-VR V6/V8 and VS S1/S2 V8
-VS V6
-VS S3 V8 (Same as VT but VS BCM so not heartbeat)
-VT V6/5.0L V8 and Supercharged Vehicles
-Flash VX/VU/VY

Well I hope thats right cause I'll be committing to those

Iv also just adding in a prototype logging system. It will always log on each new engine reading session, saving in a temporary file. These sessions can then be saved by the user to a specified location.
These sessions can then be opened and replayed/paused/stopped aswell as skipped forward to a specific time.

[Tazzi]

Alright.. what is fault code P1599?.. this is equivalent to the old style faults 99.. but I cant find any reference to what this fault actually means!

Id hook up the tech2 but its loaned out for today and tomorrow.

Iv got the freeze data working alright.. jut got to tweak it a bit so it shows the faults as hex and put in the calcs for the variables.. if I know what the are!
Number of occurances.. well thats just native.
Number of ignition cycles since fault.. native again.
Cooleant temp.. Id assume will be "X*0.75 -40"
Intake air temp.. is 2138. soooo X*0.75 -40 =63.5deg?
Reference voltage... 255... dunno? Same as the reference calc done in engine data?
The "fourth var" which is meant to be nothing... has something? lol
Engine RPM.. in native (Fault must of occured after turning engine off)
Engine Runtime.. native I guess.. is it in seconds,minutes,hours? (Again.. must have been off!)
Coolant temp.. 14.. sooo 14*0.75 - 40 = -29.5
Fuel mode.. 0.. Means Petrol (Mine is aftermarket LPG).

VY_V6_LPG_Freezedata.PNG (32.54 KiB) Viewed 5806 times

[Tazzi]

Oh to top it off. The Holden factory info says there is no fault P1599! HOW!

[Tazzi]

Ahh found it.. hidden away... P1599 = 99 = Stall Data

[VL400]

Cooleant temp.. Id assume will be "X*0.75 -40"
Intake air temp.. is 2138. soooo X*0.75 -40 =63.5deg?
Reference voltage... 255... dunno? Same as the reference calc done in engine data?
The "fourth var" which is meant to be nothing... has something? lol
Engine RPM.. in native (Fault must of occured after turning engine off)
Engine Runtime.. native I guess.. is it in seconds,minutes,hours? (Again.. must have been off!)
Coolant temp.. 14.. sooo 14*0.75 - 40 = -29.5
Fuel mode.. 0.. Means Petrol (Mine is aftermarket LPG).

Intake and coolant calcs are correct
Ref voltage is the ECUs internal 5V reference - so X / 51.2
Runtime is X and units of seconds

There should be a 4th param in the freeze frame, the VR data posted on page 2 has them all.

[Tazzi]

Intake and coolant calcs are correct
Ref voltage is the ECUs internal 5V reference - so X / 51.2
Runtime is X and units of seconds

There should be a 4th param in the freeze frame, the VR data posted on page 2 has them all.

Alright so based on that.. it should be:

; -------------------------------------------------
; -- Logged If CTS, MAT, VATS or Ref Pulse Fault --
; -------------------------------------------------
L8AE8: .word L01D4 ; CTS - CTS A/D
.word L00AB ; Battery A/D Voltage
.word L01D9 ; MAT - MAT A/D value
.word L0327 ; KPH - Road Speed for Fault Analysis

But, that doesnt match up with the info Iv received for the VU/VX/VY V6 ecus?
On the info I have.. DTC 25 (MAT High) uses DTC Table 4.. which is:
Coolant Temp
Inlet air temp
Reference voltage
BLANK
Battery voltage

Not sure what happens with those blank spots! haha.

[Tazzi]

Just realised I had a smal fault in my code, theres meant to be 5 variables not 4. I forgot to add it to the display box!

[Tazzi]

Bugger, Im going to have to emulate the packets to the tech2 as some of the calcs dont seem to quite add up. Least I can do 4 different fault tables at once.. so only have to do it 5 times

Im getting a bit confused between what the difference of:
"THROTTLE POSITION ENG. UNITS (%)"
"THROTTLE POSITION A/D COUNTS (%)"

So that sort of stuff needs to be cleared up, otherwise the info Im pumping into the list is useless without being converted correctly.