Jump to content
SAU Community

ECU Diagnostics?

Damo

By Damo,
in General Maintenance

 Share

Recommended Posts

Damo Community Regular

Damo

Posted
Posted

I have been trying to do this all morning with no luck. I have read how to enter diag. mode but my ecu does not have the selector screw, and also does not have the diag connector. Therefore i cannot enter diag mode.

I dont have any LEDs on the ecu either so i guess i go by the engine check light.

I have a 95mdl GTST, anyone else have this problem?

Link to comment
https://www.sau.com.au/forums/topic/45503-ecu-diagnostics/
Share on other sites
ylwgtr2 Grand Master

ylwgtr2

Posted
Posted

under the dash on the drivers side there is a connector with 14 pin holes (2 rows of 7 pin holes) in it....looking at the front of the connector with the chamfered end facing the left you need to switch the ignition on and touch the 6th and the 7th wires on the top row together for a second with a paperclip,the vehicle will enter diagnostic mode....

Link to comment
https://www.sau.com.au/forums/topic/45503-ecu-diagnostics/#findComment-928326
Share on other sites
Craved Grand Master

Craved

Posted
Posted

mine didn't have the LED's but it did have the screw (94 model) where are you looking at the ecu? have you pulled it right out?

on this note i thought it good to mention that when i did mine it came up all good code 55.. but this happened even when i disconnected my injectors, CAS,AFM and water temp sensor.. so i dunno how helpful it is!!

Link to comment
https://www.sau.com.au/forums/topic/45503-ecu-diagnostics/#findComment-928600
Share on other sites
Damo Community Regular

Damo

Posted
  • Author
Posted
under the dash on the drivers side there is a connector with 14 pin holes (2 rows of 7 pin holes) in it....looking at the front of the connector with the chamfered end facing the left you need to switch the ignition on and touch the 6th and the 7th wires on the top row together for a second with a paperclip,the vehicle will enter diagnostic mode....

Thats the problem, there is no connector. Can anyone post a pic of where theirs is?

Link to comment
https://www.sau.com.au/forums/topic/45503-ecu-diagnostics/#findComment-928769
Share on other sites
Damo Community Regular

Damo

Posted
  • Author
Posted
mine didn't have the LED's but it did have the screw (94 model) where are you looking at the ecu? have you pulled it right out?

on this note i thought it good to mention that when i did mine it came up all good code 55.. but this happened even when i disconnected my injectors, CAS,AFM and water temp sensor.. so i dunno how helpful it is!!

Yeah i took the ecu right out and there were 2 holes, possibly where the LEDs go on the other models. Mine just had a blanking sticker over the holes.

Link to comment
https://www.sau.com.au/forums/topic/45503-ecu-diagnostics/#findComment-928774
Share on other sites
Damo Community Regular

Damo

Posted
  • Author
Posted
Where are you, i can get hold of a carmen scan tool, does all imports to current models and also displays active data.

Does the scan tool plug into the wiring harness or ecu or both? I would be interested in been shown what it does.

I am in quakers hill, about 25 mins from penrith

Link to comment
https://www.sau.com.au/forums/topic/45503-ecu-diagnostics/#findComment-928777
Share on other sites
Damo Community Regular

Damo

Posted
  • Author
Posted
sorry to hijack

but i wanted to get my ecu out to see if it is a stock one or not, cause it doesnt cut out at 180

can anyone help?

ive tried to get the kick panel out but after i take off two screws it is still connected by something else behind it

Mine only had the 1 screw closest to the front near the firewall but has 2 clips that need a good tug to break free. get a commone screwdriver and wedge it between the panel at the back of it, near the door seal.

Link to comment
https://www.sau.com.au/forums/topic/45503-ecu-diagnostics/#findComment-928779
Share on other sites
JAS-25T Grand Master

JAS-25T

Posted
Posted

i had to lift of the plastic sill (with skyline embossed) then unscrew that plastic nut near the firewall

then i unscrewed one of the dash compartment screws so that i could get it out a bit easier

once i done that it still has a clip of some sort that needs to be undone or something, im guessing that is what needs a good tug?

Link to comment
https://www.sau.com.au/forums/topic/45503-ecu-diagnostics/#findComment-928786
Share on other sites
Craved Grand Master

Craved

Posted
Posted

Jason, they ECU has 3 bolts holding it in, one on firewall and two on other end!

Damo, mine has a clear platic sticker with Jap writing over the screw.. it's within the hole and needs a small flat head screw driver! if it has no LED's then just turn clockwise all the way the turn it back!

Link to comment
https://www.sau.com.au/forums/topic/45503-ecu-diagnostics/#findComment-929282
Share on other sites
blind_elk Grand Master

blind_elk

Posted
Posted
mine didn't have the LED's but it did have the screw (94 model) where are you looking at the ecu? have you pulled it right out?

on this note i thought it good to mention that when i did mine it came up all good code 55.. but this happened even when i disconnected my injectors, CAS,AFM and water temp sensor.. so i dunno how helpful it is!!

The engine needs to be running. Disconnect Water Temp sender with engine running, then run diagnostics.
Link to comment
https://www.sau.com.au/forums/topic/45503-ecu-diagnostics/#findComment-930091
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      What brakes on R34 GTT(Europe)

      By GTSBoy · Posted

      I would just put EBC back on the "I would not use their stuff" pile and move on.
    • Duncan
      What brakes on R34 GTT(Europe)

      By Duncan · Posted

      Can I suggest you try EBC directly again and link them to as many competitor catalogues as you can to show their listing is incorrect, eg https://dba.com.au/product/front-4000-series-hd-brake-rotor-dba42304/ If you have access to an R33 GTST VIN and your VIN, you could also use a Nissan Parts lookup like Amayama to show them the part number is different between 33 GTST and 34 GTT which may get their attention
    • Kapr
      What brakes on R34 GTT(Europe)

      By Kapr · Posted

      So i got reply from EBC and they just this site where you can clearly see those 296mm fronts on R34 GTT. I send them photos and "quotes" that 296mm are not for 34 GTT and they are too small. But it will be very hard to return them cuz nobody here knows 100% and they just copy those EBC catalogue :-D https://ebcbrakesdirect.com/automotive/nissan/skyline-r34
    • 04-LOOX
      R34 GTR Vspec Garage Sale - All must go!

      By 04-LOOX · Posted

      Hi, is the HKS  Tower Bar still available ? negotiable ? 🤔
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      From there, it is really just test and assemble. Plug the adapter cables from the unit into the back of the screen, then the other side to the car harness. Don't forget all the other plugs too! Run the cables behind the unit and screw it back into place (4 screws) and you should now have 3 cables to run from the top screen to the android unit. I ran them along the DS of the other AV units in the gap between their backets and the console, and used some corrugated tubing on the sharp edges of the bracket so the wires were safe. Plug the centre console and lower screen in temporarily and turn the car to ACC, the AV should fire up as normal. Hold the back button for 3 sec and Android should appear on the top screen. You need to set the input to Aux for audio (more on that later). I put the unit under the AC duct in the centre console, with the wifi antenna on top of the AC duct near the shifter, the bluetooth antenna on the AC duct under the centre console The GPS unit on top of the DS to AC duct; they all seem to work OK there are are out of the way. Neat cable routing is a pain. For the drive recorder I mounted it near the rear view mirror and run the cable in the headlining, across the a pillar and then down the inside of the a pillar seal to the DS lower dash. From there it goes across and to one USB input for the unit. The second USB input is attached to the ECUtec OBD dongle and the 3rd goes to the USB bulkhead connected I added in the centre console. This is how the centre console looks "tidied" up Note I didn't install the provided speaker, didn't use the 2.5mm IPod in line or the piggyback loom for the Ipod or change any DIP switches; they seem to only be required if you need to use the Ipod input rather than the AUX input. That's it, install done, I'll follow up with a separate post on how the unit works, but in summary it retains all factory functions and inputs (so I still use my phone to the car for calls), reverse still works like factory etc.
×
×
  • Create New...