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ea81t ecs light is on what should i check?

ecs light ea81t ea81 turbo

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18 replies to this topic

#1 turbosubarubrat

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Posted 10 October 2013 - 11:43 PM

Ever since i got my wagon running last weekend the ecs light has been on, so what should i check or replace? First thing i can think of is the o2/oxygen sensor. Runs great for sitting since 05 minus a lifter tick that will be adjusted when i change the oil.



#2 naru

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Posted 10 October 2013 - 11:55 PM

Read the code(s) from the ECU LED.

#3 MilesFox

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Posted 11 October 2013 - 09:44 AM

purge control solenoid



#4 yblocker

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Posted 11 October 2013 - 10:04 AM

Is the purge control solenoid the one mounted next to the egr solenoid?  Do they normally allow air flow through them when not energized?  



#5 MilesFox

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Posted 11 October 2013 - 10:14 AM

I am just guessing as it is a common code to appear with the check engine lite.



#6 naru

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Posted 11 October 2013 - 10:45 AM

No purge control solenoid nor egr solenoid on this car.

Edited by naru, 11 October 2013 - 02:03 PM.


#7 turbosubarubrat

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Posted 11 October 2013 - 11:14 PM

Read the code(s) from the ECU LED.

This might be a dumb question but what does LED stand for and how do i check it?



#8 naru

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Posted 12 October 2013 - 08:03 AM

LED=light emitting diode
It is just a light on the computer.
Remove the plastic trim panel below the ECU to see it.
Count the flashes,long and short.

#9 turbosubarubrat

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Posted 12 October 2013 - 11:10 AM

LED=light emitting diode
It is just a light on the computer.
Remove the plastic trim panel below the ECU to see it.
Count the flashes,long and short.

Ok thanks. I will check that today.



#10 ruparts

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Posted 12 October 2013 - 07:47 PM

Ever since i got my wagon running last weekend the ecs light has been on, so what should i check or replace? First thing i can think of is the o2/oxygen sensor. Runs great for sitting since 05 minus a lifter tick that will be adjusted when i change the oil.

 

  hi,  ea81 turbo motor  should have hydrolic lifters which should not need adjusted.  the valve covers  should have a label on them stating the engine has the hydrolic lifters. 



#11 turbosubarubrat

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Posted 12 October 2013 - 11:21 PM

I think it has a code 34, but will double check tomorrow using my camera so i can watch it slowly to aviod miss reading the code.

 

  hi,  ea81 turbo motor  should have hydrolic lifters which should not need adjusted.  the valve covers  should have a label on them stating the engine has the hydrolic lifters. 

That doesn't mean they never need to be adjusted. The sticker is put that on there as a warning so people read up on how to do it if it has to be done so there isn't engine damage.  Plus why would they make it so you can adjust it and give you the measurements and procedures to adjust it in the factory subaru manual? 



#12 turbosubarubrat

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Posted 13 October 2013 - 08:57 PM

Had a code 34 but got rid of it some how, but now i have both 11 and 12 on 3 different ecms the voltage at the 18 connector for the ecm is 0.02 so that is part of the problem. So what should i check for? A bad gound, bad connection, damaged wire, or?



#13 naru

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Posted 13 October 2013 - 10:51 PM

Codes 11 and 12 are normal on an unstarted engine.

ECS light still on?

 

Not sure what the 18 connector is.



#14 turbosubarubrat

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Posted 14 October 2013 - 05:44 PM

The ecs light stays on or off when the engine is running it does different things with different ecms. Sorry i ment terminal #17 on check connector #2 out of the factory subaru manual on chapter 5 page 35. Its the yellow check connector behind the fuse box it should have 17 terminal connectors on it and #17 in the book would actually be #13 if your looking at it in a car.



#15 naru

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Posted 14 October 2013 - 10:38 PM

You need to read codes while the ECS light is on.Don`t bother w/the green connector.

 

If you are referring to the 1984 FSM,chapter 5 page 35 refers to a non turbo car.

 

Page 4-58 shows the check connector pinout for turbos



#16 turbosubarubrat

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Posted 14 October 2013 - 11:52 PM

You need to read codes while the ECS light is on.Don`t bother w/the green connector.

 

If you are referring to the 1984 FSM,chapter 5 page 35 refers to a non turbo car.

 

Page 4-58 shows the check connector pinout for turbos

I will play around with those connectors tomorrow. It seems the ecs light on this ecm goes on and off while its running if you pull the parking break up or press on the brake pedal. It doesn't flash any codes when the ecs light is off so i can't read them but if i just turn the key to the on position it stays on so thats when i read the codes.



#17 turbosubarubrat

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Posted 15 October 2013 - 11:25 PM

It decided it didn't want to start today :(, its getting juice back to the fuel pump but i will test the pump as soon as i can i hope its not bad. Its still flashing code 11 and 12 but added 33 which went away on its own some how :huh:, also if i pull the ig. coil/fuel fuse out the ecs light goes off so something is wrong with that part of the system which i will start looking. Im taking it's leading to the fuel pump relay under passenger seat. Any chance you know what the relay is close to the fuel pump relay? The fuel pump relay is the one closest to the front passenger door and the other one is a couple inches away from it closer to the console thit is the one im not sure of because i forgot where it goes i just remember there was two relays there.



#18 naru

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Posted 15 October 2013 - 11:56 PM

That is the ignition relay.It supplies power to everything except the ignition.

 

Not sure which fuse you are pulling.

Fuel pump is on #2 w/the clock and horn.

 

Ignition coil and ignition relay are on #13.

If you are pulling this one,it is not surprising the ECS light goes out as the ignition relay supplies power to the ECU.



#19 turbosubarubrat

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Posted 16 October 2013 - 06:35 PM

Got it running again :). When i tried to start it again today it acted like it was going to run then nonthing, so i tried again and the fuel pump relay did nothing this time so i checked the fuse which was part of the problem since it had blown. After that i tried again and the relay did nothing still, so i unbolted the passenger seat to check out the relay. I pull the relays out of the rubber holders with the connecters still on then put them back and she started. It came on with a code 33 idleing at 1300rpm's then going up to 1600rpm's and back down then up then down ect. After that i put in another ecm which brought the idle down to 1000rpm's which slowly went down to 750rpm's and stayed there. At 1000rpm's it had a code 33 but after i drove it on are farm for a while it went to a code 24.







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