Issue with 3SGTE gen2 trigger RESOLVED

[gips]

Hello,
i am a new user to the EMU community. Recently got one of these and trying to fire up my MR2 with 3SGTE gen2. Currently the problem is that i do not have any signal coming from the primary trigger. I checked the settings and they are the same as used by ATS Racing in the US, so from that point of view it should be fine. However the primary signal is not registered at all on the log during cranking. I am out of ideas i already suspect a faulty EMU. Trigger is connected to the NE pin on the distributor. During cranking i get the software to register that i have a CAM SYGNAL, but the primary is not there at all. I guess it registers the secondary. ALso when i check on the EMU pins for the Primary and Secondary i get around 4.X voltage on the secondary and 0 on the primary is this normal, shouldn't i also see some voltage on the primary ? Any help is appreciated

[ATS_Scott]

From my experience with the EMU on the 3sgte, Your problem is either Distributor itself, or a wiring issue. How are you connected to the EMU, direct wire-in or through the ECUMaster PNP adapter? I would first check continuity (resistance in ohms) of the primary trigger wire from the distributor to the EMU. Then check that you are getting a solid ground from the EMU to the intake manifold, on all EMU ground pins (B17,G24 G17, G24) Then make sure you are getting battery voltage to the EMU (G18). finally if that all checks out post your scope, log, and emu files here, and we can run through and see if there are any obvious problems with trigger settings etc..

What firmware/software version are you using?

[gips]

Hi , i am not using the PnP adapter unfortunately. I had a spare MR2 ECU, so i just unsoldered its connector and soldered the pinout to the EMU connectors. As far as i can tell EMU is powered. It registers power as soon as i turn the ignition, this is because i have connected its +12v to the switched supply B1+ B+ on the loom. B1+ and B+ are switched 12v through a relay. So power to the ECU is fine. Grounds seem to be fine also, i have verified all Power Grounds are grounded either to E01 or E02, and the ECU ground is grounded to the E1 on the loom. Sensor ground is grounded to the E2 pin on the loom and shorted to teh G- from the distributor, so both E2 and G- are going to the sensor ground on the EMU. I have valid TPS reading, valid Coolant reading valid MAP reading frm the build in MAP in the gen 2, valid IAT reading, although its currently coming through the temperature sensor in the stock MAF, but i will fix that later. CAM signal 1 seems also to be valid as it is registered from NO to YES during cranking, however the primary trigger does not move at all.So i cannot send any Scope Log as it just stays empty, there is no trigger signal at all. So i started measuring and found that the Primary Trigger Pin B7 on the EMU does not output voltage at all. The Secondary one coming through the CAM signal 1 is outputting 4.Xv, so i am starting to wander, if the ECU is faulty. FW is 1.100, i tried with the latest 1.156 but its the same. Rolled back though , cause the fuel map and ignition map got messed up after the upgrade. So in short the problem is the Primary trigger is not registering anything at all. However i doubt its a distributor problem, because the car runs with the stock ECU without a problem. After all the VR conenction is simple +from the B7(primary trigger) and - from the sensor ground. I currently cannot get pin7 to output any voltage, so i am not sure,if i overlooked something. Do you happen to have somewhere the pinout of this PnP adapter, maybe i can compare to my wiring, to check ,if i missed something.

[ATS_Scott]

It sounds like you have a Primary Trigger wiring issue. Double check your work to the pin out provided in the attached PDF. It's worth staying with 1.156 due to several significant software/firmware updates specifically for the 3sgte, since 1.100.

Don't assume the EMU is getting full battery voltage, because the stock ECU works. The stock ECU will operate with the 2 switched powers, and battery power wires disconnected, because it allows power from the idle air control motor to backfeed. The EMU will not do this.

You cannot compare an ECU built specifically for one trigger, to an ECU built to run ANY trigger.

[ATS_Scott]

Oh and there are 2 different pinouts for a gen2 3sgte, in the US we call them 91-92 and 93+. If you have your stock ECU P/N I can tell you which one you have. Or look at stock resistor pack connectors. round is 91-92, and rectangular is 93+.

[gips]

Hello,
sadly i have wired everything important exactly as in your table except one small difference. I have grounded also POwer Ground G24 to the ECCS pin2 together with G17 Power Ground, in your table G24 is not used at all, but i guess that shouldn't matter. The rest is the same except the fuel pump, as my car was initially an NA and Fuel Pump is driven by the main relay. As soon as its open pump is started, but that is not a problem i can hear the pump as soon as the mai relay clicks open, when i trigger it ot AUX1. There is a slight difference in my ouputs as you have used aux1 and aux2 to drive the IDLE motor and i use instead Stepper motor 2A and 2B, but that is a matter of preference. It seems also you have shorted the G- and the E2 Sensor ground as i did, so this is also the same. Main trigger is connected to NE pin and Secondary to G2, exactly as i did. So as i suspected we most probably talk about faulty EMU. It was pretty obvious though after all there is no voltage on Primary Trigger Pin B7 on the EMU itself, so there is no way i will get any input. Thanks for the help. I will try to contact the EMU support on how to return the ECU.
And about the car versions 91 or 93+ it does not matter, as wiring is for sure correct. I have opened the stock ECU to see each pin markings, so i am 100% sure, about all the wires, even the ones that are marked on the ECU, but not available on the loom, so from that point of view there are no mistakes.

[gips]

Ok,
issue resolved now It was a problem with the ECU indeed. Anyway I sent it to Poland and they have fixed it. Car started first time. A few small questions I have now.
@Scott, can I use this map that is flying around, I mean can I push it, is it a map from the safe side, or is it some performance map. Car is driving perfectly with it, only adjusted injectors to 440CC as mine is Gen2 not gen 3. The car drives perfectly, but I am afraid to push on the boost, as I am yet to connect the wideband and to wire the knock to my headphones. Car smells like lean on idle, but if I look at the table the target is 15.5, so its probably normal.
My 2nd question is about the Idle. It seems the EMU is adjusting the PWM based on 5v voltage, however the 3S uses a 12v input for the idle motor. I was able to make it perfect by adjusting the DC error correction table to -41.5, but is this normal. I mean is this the purpose of this table ? I have also noticed some bugs with 1.157b and the IDLE settings nothing major though there is a workaround, where can I report the bug ?

[ATS_Scott]

Ok,
issue resolved now It was a problem with the ECU indeed. Anyway I sent it to Poland and they have fixed it. Car started first time. A few small questions I have now.
@Scott, can I use this map that is flying around, I mean can I push it, is it a map from the safe side, or is it some performance map. Car is driving perfectly with it, only adjusted injectors to 440CC as mine is Gen2 not gen 3. The car drives perfectly, but I am afraid to push on the boost, as I am yet to connect the wideband and to wire the knock to my headphones. Car smells like lean on idle, but if I look at the table the target is 15.5, so its probably normal.
My 2nd question is about the Idle. It seems the EMU is adjusting the PWM based on 5v voltage, however the 3S uses a 12v input for the idle motor. I was able to make it perfect by adjusting the DC error correction table to -41.5, but is this normal. I mean is this the purpose of this table ? I have also noticed some bugs with 1.157b and the IDLE settings nothing major though there is a workaround, where can I report the bug ?

I'm surprised the ECU was the problem, I have had to send in exactly one for repair, and it turned out to be caused by an end user error. Hot swapping ECU's with the key on due to an ignition switch problem on the car.

No idea which map you have, so I can't speak to how safe it is, but I would expect you to have to tune for your engine no matter how good the basemap is. If the target is 15.5, then you probably have one of my E85 maps, assuming it came from me.

I use DC error correction instead of PID idle control.

Bug reporting can be done at the top of this forum in the Bugs and feature request thread.

[gips]

Hello,
Here is the fuel table. It seems to be adjusted very well for a base map. Car drives very good with it. I was able to fix the idle perfectly now, so i am very happy with the ECU. I have some issues during warmup ,if i blip the throttle the car seems to try to stall, especially if the coolant temperature is below 20C.Tried to adjust this by modifying the ACC. Enrichment table and the acc. dTPS rate table, but that does not seems to have any effect. This is creating some trouble , when moving from a full stop, but i am going to chase this issue as soon as i wire the Wideband in the upcoming days.

[ATS_Scott]

Hello,
Here is the fuel table. It seems to be adjusted very well for a base map. Car drives very good with it. I was able to fix the idle perfectly now, so i am very happy with the ECU. I have some issues during warmup ,if i blip the throttle the car seems to try to stall, especially if the coolant temperature is below 20C.Tried to adjust this by modifying the ACC. Enrichment table and the acc. dTPS rate table, but that does not seems to have any effect. This is creating some trouble , when moving from a full stop, but i am going to chase this issue as soon as i wire the Wideband in the upcoming days.

I'm glad it's running well.

Get a Wideband on there ASAP! No point in guessing what is wrong.

Hesitation at cold coolant temps, usually indicates lack of fuel, either in VE table, or Warm-Up enrichment, but try and fix in VE table first, with ACC enrichment off.