|
Jim_Coupe
|
 |
« on: March 11, 2020, 05:32:44 AM »
|
|
|
Hi, I have been rebuilding my Vr6 3.2 BUB for some time now..
Everything was ready to start up couple of days ago. So I threw in a battery and tried to start.. Bang!!.. That battery was inverted.. Positive side was (-) and Ground was (+).. So i blew the main fuses in the fusebox under the bonnet and the stereo went out.. I changed the fuses and a new battery. Started the car and it was running for about an hour. And I got the error code (Camshaft not correlated to crankshaft).. The cams were two cogs away from the marks... So I took it apart and adjusted the upper timing chain.. Then i started and it ran for 1 min.. I shut it off to top up some coolant.. Then the engine was totally dead.
I did following checks:
Fueldelivery: OK
Spark: NO Spark
RPM signal: OK
Battery: New
Fuel: NEW
12V to coils: OK
Groundings to Coils: OK (But there was a grounding cable in the harnes that was abit uncertain if it was tightened)
So it came down to no Spark.. I used the multimeter to check harness to ECU and that was intact. But then i ran a test on one if the camshaft HALL sensor connectors. The connector is 3-pol. (Pin1 Ground, Pin2 Signal, Pin3 5v).
It measured 12V on the signal pin.. hmm thats wierd.. So I disconnected ECU harness and 12V dissapeared on the S pin.
This leads me to ECU problems. I have a new ECU on its way but.. im wondering if its possible to repair this ECU somehow?
What do you guys think?
|
|
|
|
« Last Edit: March 15, 2020, 11:44:19 AM by Jim_Coupe »
|
Logged
|
E85oholic
|
|
|
dragon187
Full Member
Karma: +13/-15
 Offline
Posts: 106
|
|
« Reply #1 on: March 11, 2020, 11:17:53 AM »
|
|
|
|
|
|
|
|
Logged
|
|
|
|
|
Jim_Coupe
|
|
« Reply #2 on: March 11, 2020, 01:52:13 PM »
|
|
|
Thanks ! Exactly what i was looking for.
|
|
|
|
|
Logged
|
E85oholic
|
|
|
|
Jim_Coupe
|
|
« Reply #3 on: March 15, 2020, 11:43:16 AM »
|
|
|
Seems more like the ECU was not the problem.. Hooked up a new ECU after swapping the immo chip over to it.. Same behavior and no spark.. Then i changed the immo chip back to my old ECU and i got no connection even to the ECU or the cluster via VCDS... Waited a few hours and disconnected the battery för 20min..and put the +- togheter and the ECU woke up again.. but with same issue as before (no spark)..
Then i tried som diffrent methods with VCDS to enter my WSC code to recode the key and try and se if that was the problem. But didnt manage to understand how to do that so I decided to disconnect battery another 20 min..
Then after connecting the battery again.. contact with ECU was lost again and the cooling fans started to run after 30sec´s.. Like if the ECU was totally dead. And no contact with anything on VCDS..
I have now checked all the relays 2 times.. and all the fuses 2 times... both under the bonnet and at the power supply board in the car. Als all the main fuses. I have never come across a problem like this in my life..
Im totally out of ideas.. It feels like the CAN-bus have gotten it self a smack.. But i dont kow where to start now.
|
|
|
|
« Last Edit: March 15, 2020, 12:30:43 PM by Jim_Coupe »
|
Logged
|
E85oholic
|
|
|
dragon187
Full Member
Karma: +13/-15
Offline
Posts: 106
|
|
« Reply #4 on: March 15, 2020, 12:14:30 PM »
|
|
|
Can you upload your actual eeprom here please?
I would like to check.
|
|
|
|
|
Logged
|
|
|
|
|
Jim_Coupe
|
|
« Reply #5 on: March 15, 2020, 12:29:36 PM »
|
|
|
Yes i Can do that. You mean immo chip?
|
|
|
|
|
Logged
|
E85oholic
|
|
|
dragon187
Full Member
Karma: +13/-15
Offline
Posts: 106
|
|
« Reply #6 on: March 15, 2020, 12:40:22 PM »
|
|
|
Yes immo eeprom
|
|
|
|
|
Logged
|
|
|
|
|
Jim_Coupe
|
|
« Reply #7 on: March 15, 2020, 12:40:59 PM »
|
|
|
Heres what i read out 2 days ago with my Miniprogrammer.
|
|
|
|
|
Logged
|
E85oholic
|
|
|
dragon187
Full Member
Karma: +13/-15
Offline
Posts: 106
|
|
« Reply #8 on: March 15, 2020, 12:48:32 PM »
|
|
|
Eeprom is ok, not locked.
Hmm...
Have you tried immo off?
If than car start I think dash will be problem.
|
|
|
|
« Last Edit: March 15, 2020, 12:57:29 PM by dragon187 »
|
Logged
|
|
|
|
|
Jim_Coupe
|
|
« Reply #9 on: March 15, 2020, 03:36:48 PM »
|
|
|
Yes im starting to think about trying immo off.. Where can i get a immo off for this ECU? Can the immo make the CAN bus of comms go down..
|
|
|
|
« Last Edit: March 15, 2020, 03:42:17 PM by Jim_Coupe »
|
Logged
|
E85oholic
|
|
|
dragon187
Full Member
Karma: +13/-15
Offline
Posts: 106
|
|
« Reply #10 on: March 15, 2020, 03:57:13 PM »
|
|
|
try this Eeprom.
After you can check on table with vcds if it is immo off. -> see picture inside archieve.
i have hade one time same problem with a TT 1.8T, there was not possile to reach engine ecu via obd with vcds.
After immo off it was possible.
good luck
|
|
|
|
« Last Edit: March 15, 2020, 04:00:15 PM by dragon187 »
|
Logged
|
|
|
|
|
Jim_Coupe
|
|
« Reply #11 on: March 15, 2020, 04:10:39 PM »
|
|
|
Thanks so much man im gonna try this asap.. all ideas are welcome..  |
|
|
|
|
Logged
|
E85oholic
|
|
|
dragon187
Full Member
Karma: +13/-15
Offline
Posts: 106
|
|
« Reply #12 on: March 15, 2020, 04:15:56 PM »
|
|
|
I try to help. It is important that you hear fast the nice sound of your engine. |
|
|
|
|
Logged
|
|
|
|
|
Jim_Coupe
|
|
« Reply #13 on: March 15, 2020, 04:49:09 PM »
|
|
|
That immo off gave me acces to VSDC now i atleast have response.. Thanks man appriciate it. VCDS reaches most of the controlles but the ECU is totally dead.. I measured on the T121 connector pin 3 on the ECU but no powersupply at all.. I should measure 12V+ when key is turned.. I need to trace that supply to se where it goes.. Maybe that will lead me to what caused all this mess  Its now almost 3 years since i drove this car after the engine broke down.. Finally rebuilt it and now this. Thats car life |
|
|
|
|
Logged
|
E85oholic
|
|
|
|
Jim_Coupe
|
|
« Reply #14 on: March 15, 2020, 06:08:57 PM »
|
|
|
I tried to follow the 12V+ Supply and measure on any fuse that relates to the ECU connector (pin 3) non had contact with the Pin 3 powersupply to ECU.. (noo beep).. But then i measured on the fuse holder to anti-theft unit it pinged with Pin 3 but only for 2 seconds the something turned it off.. I then put back the fuse to anti theft unit and took it out again.. did the same as befor and pinged with the multimeter to the ECU connector power supply and it again beeped for 2 seconds.. hmmm... it makes sens if the ECU power supply goes throug the anti-theft unit but.. that dont make sens with the drawing posted. Gotta check again.
Maybe the TT mk2 have bit diffrent power supply to the ECU than the R32.
|
|
|
|
« Last Edit: March 15, 2020, 06:11:43 PM by Jim_Coupe »
|
Logged
|
E85oholic
|
|
|
|
