JWteknix

iTrader: (2)

Ok, so I am nearing the end of my 88 se project.
I am using the banzai adaptor and have everything all hooked up. The datalogit is plugged in to the PFC correctly. I turned on the igniton and check to see if the accseroies worked and what not no problem.
Didnt load in my map yet, so I figured I'd prime everything up. Pulled both EGI fuses and cranked the car to get the oil pressure up car cranks no problem.

Now I was stoked got my computer hooked up to the datalogit and tried initializing the pfc.
It said I haven't chose a COM port and asked if I would like to do it automatically.
I said yes and followed the instructions and it kept telling me to turn the ignition on and off and check the light on the datalogit and make sure it was on.
The light would NOT turn on w/ the ignition in the on position. i checked my connections all were good and tried agian light in box still wouldnt light up .
So I disconnected the datalogit from the PFC and hooked up the commander turned the ignition on and no display. Does anyone have any insight for me?
thanx
james

JWteknix

iTrader: (2)

it shouldnt matter that the PFC itself isnt mounted/grounded, would it?

JWteknix

iTrader: (2)

PFC manual states
When the IGNITION KEY is ON...
does the FC-COMMANDER properly display data?
(LCD may turn black under hot conditions. the screen will return once he temperature cools down)
{If display does not function properly, please see your dealer of purchase for service}
so i guess i have to contact rhdjapan?
james

JWteknix

iTrader: (2)

bump anyone have any input

Dudemaaanownsanrx7

iTrader: (23)

(i thought i replied to this yesterday)- anyways i'll rewrite what i wrote....did you put the fuses you pulled back in? i believe you need the egi in place for anything to show up on the PFC

And you shouldnt need another ground on the ecu my FD doesnt have one.. it does have a ground in the stock ecu mounting location though. It's on one of the ecu bolts.(FD anyways)

JWteknix

iTrader: (2)

you answered me like two hours ago on my other forum and if you followed the thread you would know i did put the fuses back in but never tried to start it i have to put me base map in first and i already ruled out the grounding i have no power to the datalogit or commander so i dont see what those fuses have to do with any thing. thanx
james

Dudemaaanownsanrx7

iTrader: (23)

ok now i see why i thought i replied already, it was on the other forum and i see that you did put the fuses back in. Take a volt meter and check the wires going into the PFC, im not sure which wires to check but some will be +V possibly from an ignition source, and might be a ground wire too. I havent looked at the ECU pinout in years, but it has to get power somehow, and thats the first place i would check.

FYI i told the commander to automatically choose a command port as well and it worked fine, so it isnt because you didnt manually choose a port. (the dataloggit will power on without the laptop even connected) i don't think it had anything to do with your datalogit or commander, maybe a relay, a fuse, or the PFC itself.

Dudemaaanownsanrx7

iTrader: (23)

i'm not sure if you ever mentioned if the EGI was put back in or not, but the PFC will not power up without the EGI in place. Thats what that fuse has to do with

arghx

iTrader: (3)

Since you are doing an n/a to turbo swap, the wiring could have somehow gone wrong in the process. Are you just using the n/a engine harness? Check all fuses, then get your FSM out and verify power and ground.

JWteknix

iTrader: (2)

no I frankensteined the car to ubtain all the best harnesses for the project I have every thing wired up as per hailers. I am using a turbo emission and alternater harness withc I completely remade and a na front hharness I have every thing wired correctly there isn't to much of a difference between the harnesses how can I check the PFC has power and ground I mean every thing works theres just no power to the display I just dont wana try starting it on the fd map
thanx
James

JWteknix

iTrader: (2)

here all my wiring done it starts on the bottom of the second page
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/wiring-problem-718820/page2/
the only thing really different between the two harnesses is a couple of sensors and the alternator dont think it should have to do with that im gonna check it out again today all also go over all my fuses again but i really think it has more to do with the pfc how can i check for power and ground coming out of it or is there a way to inspect it?anyone else have any insite.
thanx
james

JWteknix

iTrader: (2)

maybe i should remove the pfc and hook up a stock tii ecu to see if it starts just to rule out any thing posible w/ the wiring just would have to swap my trailing coils

JWteknix

iTrader: (2)

ok so disconnected every thing that has to do with the banzai adaptor and PFC put the stock tII ecu back in w/ the trailing coils of my DD so its basically back in stock form went to crank the car and I have no spark to my leading or trailing coils, fuel pump works injectors are firing I see and smell fuel going out of the dp rechecked ALL fuses in car theyre good rechecked all my engine and emission harness wiring and connections all are correct but while under the dash on the driverside I saw a large connector not plugged in to anything so maybe I have somthing behind dash not hooked causing no power to ecu? I have to pull the dash the see where this connecter goes I'm hoping I just left something in plugged any more insight
thanx
james

JWteknix

iTrader: (2)

well found the conncetor went to a gold box on the ds kickpanel put the box in and still no spark i am also not getting any tach bounce while cranking. idk now im ****** lost there is also a buzzer going off when key is left in the on posintion but turns off when cranking
james

HAILERS

We must have gone wrong somewhere in the prior posts.

It sounds like the ECU isn't getting any power. The ONLY way I know how to make sure, is to get a digial meter out. Neg meter terminal on a good gnd like one of the studs that hold the ECU brackets in place.

Then go to the small ECU plus and probe the two wires on the far left of the plug as you look into the Wire side of the plug. Both should have batt voltage. Remove the plug from the ECU when you check the wires in the small plug.

Let's just leave it at that until you take a look at those two wires. One wire is White/Blue and the other Black/White. It does sound like there is just no power to the unit.

Dudemaaanownsanrx7

iTrader: (23)

is there a pinout of the harness that plugs into the ECU? something that shows more then just the colors of the wires but also their function.

When i wired up an emanage in my FD i found an ecu pinout that showed what everything was. Once you have that you should be able to figure out what wires should have voltage when the key is on, and verify that all the wires needing voltage have voltage. It really sounds like some wire at the ECU isn't getting power, or ground.

if you have another car available that has the same engine harness you can test the wires at the ECU on that car to see which ones have power and which ones are ground with the key on, and then check the same ones on the car your working on to make sure they are the same.

JWteknix

iTrader: (2)

ok hailers I check those two wires the top one I believe the white and blue has battery voltage when checking it I could hear a relay in the front clicking the other wire the lower one black and white I think was reading just under half a volt where does that run too and does it recieve power from? Again thanx so much for all your help hailers
James

JWteknix

iTrader: (2)

Ok Hailers,
Correct me if I'm wrong, I'm not the best at reading wiring diagrams.
I believe pin 3I (B/W) gets power from the main relay FSM pg 50-25? and 3J (W/L) goes to a battery point source pg 50-22?
Now I might have written the wires colors backwards in the previous post, I dont remember, I'm gonna recheck tomorrow again, but definatly one of the wires was not getting power.
The one that was getting power when it was grounded through the meter i heard a relay clicking in the front of the car.
So if I read the scematic correctly that means I have power at the B/W wire and I was hearin the main realy clicking?
Now if thats correct, then that means I'm not getting power to the W/B wire, which is supposed to be battery source. It runs to connector FEM-02, then changes to a L/R wire which goes to battery source where ever that is. Idk I was just tring to understand this ****, am I anywhere close? lol
Thanks
James

JWteknix

iTrader: (2)

Ok I think, I figured out how the wire flows to battery source.
Again im just taking a stab at it. according to pg 50-12 of the fsm, wiring diagram, power system.
after connector fem-02 the L/R(F) wire goes to a 7.5amp fuse on the inside of the vehical
after the fuse the color changes to W/R(E) to a 60amp fuse in the enigine bay? then to the battery?
james

JWteknix

iTrader: (2)

Ok, all my assumtions where wrong and maybe im just retarted, but I just retested the 2 wires at the small connector and my original post was correct.
Except there was no realy clicking (maybe i was just hearing things?) this time I tested each wire numerous times and this is what i got.
The bottom W/L wire has battery voltage. So, all that **** I wrote before wont have to be checked, the circuit is working correctly.
The top B/W wire has no power it reads .140vdc. So, I'm gonna try to figure out where this wire goes, but the fsm shows this circuit weird and its hard for me to follow the other wires circuit was much easier lol
james

Dudemaaanownsanrx7

iTrader: (23)

here is a diagram i found from my emanage manual. yours would be the MA-6 diagram i believe. i don't know if this will help at all.

+B = POWER
E = GROUND
I = RPM SIGNAL
TH = THROTTLE
AR = AIRFLOW SIGNAL
#E = INJECTOR GROUND
tL = LEADING IGNITION SIGNAL
tT* = NUMBER * TRAILING IGNITION SIGNAL
#P*= NUMBER * PRIMARY INJECTOR SIGNAL
#S* - NUMBER * SECONDARY INJECTOR SIGNAL