that is correct EGR is DEAD , not moving (ECU programming (and the ported vacuum is dead, so double dead , it idle) and if moving and not at idle it goes ACTIVE.
it is that simple, but wait, it cuts out WOT. too.
The Canister is dead at idle, so it dont mess up idle , then when the idle switch goes, off idle it goes active.
by design and ECU programming.
im not sure on those, other bits flipping, after all SUZUKI never once disclosed the MAPPING details. (just to Tech1 ,long long ago....)
There is no publish spec, none at all, it's all a big secret.
not all status flags are presented in the human data stream. not even close. it just SOME PIDs, not all. this is true on all OBD1 cars., hell even OBD2.
The newer the ECU the more complex. ever study how LTFT is stored at many engine load factors, in a matrix, read the old V8 Engines, OBD1, they documented this. a great read.
closed Loop means, the 02 sensor, is now active and ALL AFR is control by IT. (the LOOP) think of autopilot in an air craft, it too is a closed loop servo system. (same is ISC)
it's a servo, a loop. the ECU is reading 02 and adjusts all AFR at all times Closed loop
when not in closed loop the MAF runs the show (air + fuel = injection rates)
closed loop takes that same equation and adds 02 trim. that is it.
but can be very complex on newer cars, newer cars store a 16 wide matrix of LTFT (LTFT on one axis and load the other, or 3D matrix with RPM)
when you change speeds, the ECU may first try old LTFT data. (stored in LTFT x) then correct as it happens. it just a starting point. (GM OBD1 does that)
what this MITSUBISHI ECU does it , i've not the foggiest notion. I've never disassembled the code,
CL does not bounce. (well normally if somethings wrong, sure, like vacuum leaks?)
CL is active WHEN:
above a certain coolant temp, my guess 150f.?
and when 02 is fully hot. (my 1996 would do this is 10second, from cold start and was an EPA mandate to do so...)
and at cruise only. (and hot idle too.)
and at steady right foot.
and it steady maf readings, Cruise is that.
then it goes CL.
if you move the right foot fast, bam CL = FALSE. and MAF runs the show. In fact , the fast right foot , trips the ENRICH bit. (you cant see that either)
if you go WOT< the CL goes false, and MAF runs the show. The ecu has a WOT bit too. unseen by you.
when you finally get back to cruise and Enrich end, , CL = TRUE. 14.7:1 AFR, and looping and the o2 is cross-counting like 6 times a second.
if you have a OBD2 car of any kind, you can watch this and log it. all day. ($9 tool, and $25 relic lap top, all day)
it's the best way to learn, using a real system that works, no bugs.
good luck. with your tool , sounds like lots of fun.
also the older ECU can not steam data fast enough (slug slow processor) to see the 02 swing.
what you see is jerks and fits. (do to , slow scans)
the ECU does see ever swing of the ECU, (toggles) and trims full time by what it sees.
think of that is process 2 ,just behind process1 , make spark happen on time.
spark 1
inject 2
trim 3
id bet those are processor priorities
you can read the open source code on some custom ECUs.
many engineers at school , publish their projects. for making a working ECU.
you can see the whole thing.
it is that simple, but wait, it cuts out WOT. too.
The Canister is dead at idle, so it dont mess up idle , then when the idle switch goes, off idle it goes active.
by design and ECU programming.
im not sure on those, other bits flipping, after all SUZUKI never once disclosed the MAPPING details. (just to Tech1 ,long long ago....)
There is no publish spec, none at all, it's all a big secret.
not all status flags are presented in the human data stream. not even close. it just SOME PIDs, not all. this is true on all OBD1 cars., hell even OBD2.
The newer the ECU the more complex. ever study how LTFT is stored at many engine load factors, in a matrix, read the old V8 Engines, OBD1, they documented this. a great read.
closed Loop means, the 02 sensor, is now active and ALL AFR is control by IT. (the LOOP) think of autopilot in an air craft, it too is a closed loop servo system. (same is ISC)
it's a servo, a loop. the ECU is reading 02 and adjusts all AFR at all times Closed loop
when not in closed loop the MAF runs the show (air + fuel = injection rates)
closed loop takes that same equation and adds 02 trim. that is it.
but can be very complex on newer cars, newer cars store a 16 wide matrix of LTFT (LTFT on one axis and load the other, or 3D matrix with RPM)
when you change speeds, the ECU may first try old LTFT data. (stored in LTFT x) then correct as it happens. it just a starting point. (GM OBD1 does that)
what this MITSUBISHI ECU does it , i've not the foggiest notion. I've never disassembled the code,
CL does not bounce. (well normally if somethings wrong, sure, like vacuum leaks?)
CL is active WHEN:
above a certain coolant temp, my guess 150f.?
and when 02 is fully hot. (my 1996 would do this is 10second, from cold start and was an EPA mandate to do so...)
and at cruise only. (and hot idle too.)
and at steady right foot.
and it steady maf readings, Cruise is that.
then it goes CL.
if you move the right foot fast, bam CL = FALSE. and MAF runs the show. In fact , the fast right foot , trips the ENRICH bit. (you cant see that either)
if you go WOT< the CL goes false, and MAF runs the show. The ecu has a WOT bit too. unseen by you.
when you finally get back to cruise and Enrich end, , CL = TRUE. 14.7:1 AFR, and looping and the o2 is cross-counting like 6 times a second.
if you have a OBD2 car of any kind, you can watch this and log it. all day. ($9 tool, and $25 relic lap top, all day)
it's the best way to learn, using a real system that works, no bugs.
good luck. with your tool , sounds like lots of fun.
also the older ECU can not steam data fast enough (slug slow processor) to see the 02 swing.
what you see is jerks and fits. (do to , slow scans)
the ECU does see ever swing of the ECU, (toggles) and trims full time by what it sees.
think of that is process 2 ,just behind process1 , make spark happen on time.
spark 1
inject 2
trim 3
id bet those are processor priorities
you can read the open source code on some custom ECUs.
many engineers at school , publish their projects. for making a working ECU.
you can see the whole thing.
http://www.fixkick.com