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Old 07-31-2003, 03:48 PM   #1
HndaTch627
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Default Link PLus users need your advice

My02 RS w/ Link Plus ECU

Total hybrid i won't go into details

Problem: vehicle cranks but will not fire, no spark, no RPM reading on Link Plus. ALl the sensors are hooked up and working. it has a good map loaded into the LInk Plus. It has fuel, just no ignition, all fuses check okay. I did not have my logic tester with me today so i was unable to check to see if the ECU was supplying power to the coil and also switching the ignitor grounds on and off. I will check tommorrow but in the mean time has anyone had these issues.

also for those with connection problems, do NOT use a serial cable with a male/male gender changer, i could not get my laptop to communicate with the link plus for approx 2 hours. While beating my head against the wall i dismantled the Serial link box and plugged it into my serial port and the Link Plus instantly connected.

Thanks for your suggestions in advance.

jeremy
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Old 07-31-2003, 09:38 PM   #2
Hondaslayer
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Jeremy,
I know its kind of a dumb question (and probably been checked) but.

Cam/crank sensors,plugged in?
Coilpack, plugged in?
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Old 08-01-2003, 12:38 AM   #3
milkman
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Default ^My first thought^

Also, what is the link coil settings?

I had my Link switch from wasted spark to single coil on it's own ( a bug in the old software) Not a good thing. All most over heated the coil.
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Old 08-01-2003, 12:41 AM   #4
sideways slut
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hey jeremy, when i first tried to start my car, i had the same problem. i went to the dealership and got the wiring diagram for the ecu and checked every wire( my link wire loom was pre set). i found out that they put the crank and cam sensor wires in the wrong spot( one off, but it made a huge difference). if i were you, id check the wires before you waste too much time and go through too much frustation.

jay
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Old 08-01-2003, 02:20 AM   #5
HndaTch627
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Default

Quote:
Originally posted by sideways slut
hey jeremy, when i first tried to start my car, i had the same problem. i went to the dealership and got the wiring diagram for the ecu and checked every wire( my link wire loom was pre set). i found out that they put the crank and cam sensor wires in the wrong spot( one off, but it made a huge difference). if i were you, id check the wires before you waste too much time and go through too much frustation.

jay
already did not to mention i ended up breaking the damn pins because they are SOO DAMN FRAGILE

i already checked the wiring for the entire plug and play harness.

Ben: all the sensors are plugged in and connected....any idea if the WRX uses different cam/crank sensors as i have NO clue what the person who put them in used.

Milkman: i will definitely check that tommorrow, thanks for the suggestion. I just ran out of time today before work.

God i want this car to run

Jeremy
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Old 08-01-2003, 10:12 AM   #6
WRC 555
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Default

Whats your row settings set to? Is it MAP+TPS? Set everything to MAP including enrichment and do a re-load. Then manually enter the numbers for your timing and fuel. You will need to open two Link sessions and only go online with one. Very tidious but effective in my opinion.

I know your probably like huh but that may solve the problem if everything else is fine.

As far as what milkman said about the coil setup..it should still fire but run like crap..engine very shaky and sounds like a lawnmower
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Old 08-01-2003, 10:45 AM   #7
milkman
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Default you must of done that ^

Yes, that's right but not if you fry the coil out.

What's the set up as you know the WRX uses the direct fire coils?
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Old 08-01-2003, 11:08 AM   #8
HndaTch627
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Default Re: you must of done that ^

Quote:
Originally posted by milkman
Yes, that's right but not if you fry the coil out.

What's the set up as you know the WRX uses the direct fire coils?
it is still using the RS ingition, just WRX heads.

WRC555: everything is set to MAP only.

Time to shower and figure this out.

jeremy
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Old 08-01-2003, 11:17 AM   #9
WRC 555
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Did you wire it in yourself or did you get the PnP harness?
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Old 08-01-2003, 11:25 AM   #10
PHATsuby
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just to let you know the wrx does use different crank and cam sensors than the RS(at least the older RS's and i am assuming new as well), i should know because my legacy does too and thats why i couldnt use the Link plus like the RS-T guys.

Ben
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Old 08-01-2003, 11:32 AM   #11
DoctorNick
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Quote:
Originally posted by PHATsuby
just to let you know the wrx does use different crank and cam sensors than the RS(at least the older RS's and i am assuming new as well), i should know because my legacy does too and thats why i couldnt use the Link plus like the RS-T guys.

Ben
sensor or trigger wheel?(reluctor wheel?)
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Old 08-01-2003, 12:52 PM   #12
PHATsuby
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to stock is a project too

Default

apparently the legacy uses a 2 postion cam sensor, and a high resolution crank sensor which is supposed to be similar to the wrx if not identical. the older 2.5RS uses a 9 position cam sensor and a 6 position crank sensor. i also know that my car uses inductive sensors instead of the halls effect sensor that is the in the RS i believe.

with the autronic ecu i had to get a reluctor interface to change it from a wave to square to mimic the halls effect i believe
Ben
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Old 08-01-2003, 12:56 PM   #13
HndaTch627
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Default

Quote:
Originally posted by PHATsuby
apparently the legacy uses a 2 postion cam sensor, and a high resolution crank sensor which is supposed to be similar to the wrx if not identical. the older 2.5RS uses a 9 position cam sensor and a 6 position crank sensor. i also know that my car uses inductive sensors instead of the halls effect sensor that is the in the RS i believe.

Ben
your legacy is identical to the RS(at least as far as i know).

It's a 6 tooth crank wheel with 2 teeth offset, the cam sensor has 4 sets of teeth(i can't remember the exact amount of teeth).

so here's the deal

No coil control out of the link, does anyone know if the Link sense RPM based on ignition or based on crankshaft revolution??

what a nightmare.

Jeremy
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Old 08-01-2003, 01:01 PM   #14
PHATsuby
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Default

its not identical otherwise i would be using a link plus right now and so would JoeT(he is the first to turbo his 2000 legacy) so he told me all this that he discovered the hard way. but i could very well be wrong on the details but all i know is that it is different.

jeremy since you are a tech i have a question, the subaru engines fire 1,3,4,2 correct? and if so how is the wasted spark separated? on my factory one it is 1+2 together and 3+4 together but someone was trying to tell me that is incorrect even though thats how subaru did it.

thanks

Ben
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Old 08-01-2003, 01:14 PM   #15
HndaTch627
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Default

1-3-2-4 not the standard 1-3-4-2 that's what gives these cars the offbeat rumble is firing same banks at a time. well that's an interesting tid bit about the legacy, i was under the impression that all of the EJ25 phase 2's had the same ECU's. the JDM legacy's however share the same ignition as the WRX. Did you actually phsyically check to see if it was different?? sorry i am just curious and i can't imagine SOA changing something like that since the 02 has the same ECU and engine harness.

Jeremy
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Old 08-01-2003, 02:32 PM   #16
PHATsuby
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Default

i have not actually checked it, Joe has graciously given me all this info on it because he had the trouble. he would be the best person to talk to about it. i should note that i am currently trying to get my car started too, but i am confident it will start, a few things must be wired wrong but when i check them it seems like they are correct.

Ben
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Old 08-01-2003, 02:46 PM   #17
HndaTch627
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ben i am glad i am not the only one

Jeremy
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Old 08-01-2003, 02:54 PM   #18
Drac9
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I have the pinouts for the stock ecu with the correct diagram to connect to the correct pins on the link plus if you think it would be helpful.

I can scan them this evening i think.

Adam
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Old 08-01-2003, 02:56 PM   #19
JoeT
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Quote:
Originally posted by HndaTch627
your legacy is identical to the RS(at least as far as i know).

It's a 6 tooth crank wheel with 2 teeth offset, the cam sensor has 4 sets of teeth(i can't remember the exact amount of teeth).

so here's the deal

No coil control out of the link, does anyone know if the Link sense RPM based on ignition or based on crankshaft revolution??

what a nightmare.

Jeremy
Hi Jeremy,

Yeah, I found out the hard way that the Legacy is different from the 2.5RS.

We use the same crank trigger as the WRX and the same cam trigger as the WRX as well. It was a long and arduous process, but my car has been Turbo'd since February of this year and I'm loving it.

Just got my dyno chart in from a Dynapac AWD Dyno vs STI... Muahahahahaha!!! Same day, same dyno, interesting results. (brag)...

Wooohoo!

Good luck in your project, I wish you lots of happiness and success.
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Old 08-01-2003, 04:09 PM   #20
PHATsuby
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to stock is a project too

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hey i didnt hear about these new numbers! sounds awesome!

jeremy, good luck in getting it started, i think i have found my problems after speaking with Joe, wrong crank sensor wiring and we were using different coolant sensors, so i am going to hook up the one like he has and hopefully that will get me going.

keep us updated!

Ben
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Old 08-03-2003, 06:31 PM   #21
HndaTch627
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Update: Vehicle still won't start, plugged int he stock ecu to verify that i had the wiring correct and the coil fires, plug the link back in and i get nothing.

Any suggestions??

jeremy
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Old 08-03-2003, 07:08 PM   #22
DoctorNick
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Quote:
Originally posted by HndaTch627
Update: Vehicle still won't start, plugged int he stock ecu to verify that i had the wiring correct and the coil fires, plug the link back in and i get nothing.

Any suggestions??

jeremy
tell the moron to buy a wrx
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Old 08-03-2003, 09:48 PM   #23
milkman
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Default Ok, then I would say it's the Link jk

It's configured correctly right?

All the pins in the harness are making contact and your sure it wired correctly.

Check the BLUE and BLUE/Black wires off the link too see if they are sending signals to the coil if there not then maybe the Link it's self is fried.
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Old 08-03-2003, 10:13 PM   #24
Hondaslayer
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Jeremy,

Who else is running a Link down there?Maybe try swapping the Link itself?
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Old 08-03-2003, 10:21 PM   #25
HndaTch627
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Default

Quote:
Originally posted by hondaslayer
Jeremy,

Who else is running a Link down there?Maybe try swapping the Link itself?
just did earlier, put the link into a frankensubaru Ej22t swapped L brighton, loaded his map and the car started fine. went and plugged it into the other car and still no spark. wiring is all correct because the ECU even thru the correct error codes when the crank/cam sensors were unplugged during cranking. no erratic signal or weak signal codes and definitely a hot spark.

only thing left is either a bad harness or there are too many teeth on the WRX cam gear
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