Factory ECU Dual Pump Control
Jan 4, 2012, 11:02 PM
#91
If you are talking about the bit Acamus pointed out and the code chunk I went over, it doesn't really make sense as the #2 relay. Could be EVAP related?
It is in the main CAS interrupt driven routine instead of the main loop, which seemed kind of odd to be there if it was the fuel pump change over. Doesn't seem like it would really need to be that real time to me.
The corresponding routine in 96530006 is at 205AC and I have it marked as an unknown solenoid. Table is located at 0x4568 and axis is 0x6576, should anybody be interested in testing.
When you say bit.7, are you talking bit.1 being the lowest? It's looking for 0x40, which isn't that bit.6 if you go by bit.0 being the lowest? Isn't that the typical method used? Or is this just matter of preference?
Anybody got any good ways to simulate the crank and cam signals with proper phasing? I have some stuff to build up a test bench and being able to run the ECU on the bench would make it pretty easy to make sense of this stuff as otherwise I have no way to test anything out. I've been thinking about using an Arduino to kick out the two signals?
It is in the main CAS interrupt driven routine instead of the main loop, which seemed kind of odd to be there if it was the fuel pump change over. Doesn't seem like it would really need to be that real time to me.
The corresponding routine in 96530006 is at 205AC and I have it marked as an unknown solenoid. Table is located at 0x4568 and axis is 0x6576, should anybody be interested in testing.
When you say bit.7, are you talking bit.1 being the lowest? It's looking for 0x40, which isn't that bit.6 if you go by bit.0 being the lowest? Isn't that the typical method used? Or is this just matter of preference?
Anybody got any good ways to simulate the crank and cam signals with proper phasing? I have some stuff to build up a test bench and being able to run the ECU on the bench would make it pretty easy to make sense of this stuff as otherwise I have no way to test anything out. I've been thinking about using an Arduino to kick out the two signals?
Before I left town for work this week, I had a quick opportunity to log FFFF6A0C bit.6 during startup and idle, and the status of that bit matched perfectly with what relay #3 was doing, so I'm very confident that its the correct bit. I just need to verify with probably 10 seconds of actual driving of my car.
Jan 5, 2012, 07:44 AM
#92
Acree, yeah I've used Matlab quite a bit. Didn't really think of using the speaker as an output though.
MRFred, I think the mistake I made before is I logged the car and had a voltmeter on relay #3 as well. However, I only did it with it sitting idling and free reving and I never got a chance to drive it around with the voltmeter on. I could see how free reving it would have easily lead me astray.
It would be good to nail both fuel pump relays down to a known output on the microcontroller, if for nothing else then just getting a good idea of what outputs are still left.
MRFred, I think the mistake I made before is I logged the car and had a voltmeter on relay #3 as well. However, I only did it with it sitting idling and free reving and I never got a chance to drive it around with the voltmeter on. I could see how free reving it would have easily lead me astray.
It would be good to nail both fuel pump relays down to a known output on the microcontroller, if for nothing else then just getting a good idea of what outputs are still left.
Jan 5, 2012, 01:35 PM
#93
I've done quite a bit of signal processing and analysis in matlab for my classes and work. I'll graduate this May with a BSEE. I wouldn't mind doing some kind of collaboration with you and code part of the project as this is part of the ECU I'm definitely interested in nailing down.
-Acree
-Acree
Jan 6, 2012, 07:08 PM
#94
...
Before I left town for work this week, I had a quick opportunity to log FFFF6A0C bit.6 during startup and idle, and the status of that bit matched perfectly with what relay #3 was doing, so I'm very confident that its the correct bit. I just need to verify with probably 10 seconds of actual driving of my car.
Before I left town for work this week, I had a quick opportunity to log FFFF6A0C bit.6 during startup and idle, and the status of that bit matched perfectly with what relay #3 was doing, so I'm very confident that its the correct bit. I just need to verify with probably 10 seconds of actual driving of my car.
03whitegsr, I think you had asked about relay #2. That's FFFF6A0C bit.7.
Aug 28, 2013, 04:52 PM
#95
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Back from the dead. Anybody get this completely figured out? I'll be purchasing a squash double pumper in a couple months and I'd prefer the ecu to control the second pump rather than a hobbs switch.
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