Shenandoah
Veteran Member
- Joined
- Jan 9, 2008
- Location
- Shenandoah Valley, VA
- TDI
- 2005 Jetta Wagon; 2005 Beetle; 2004 Jetta; 2002 Golf (three of them); 2002 Jetta Wagon; 2000 Audi TT->TDI; 1999 Beetle
Folks,
I've been working on the 2002 Jetta sedan (2.0l gas, 01m automatic transmission, 192k miles) my daughter drives. I replaced the solenoids and ribbon cable/harness. I had several solenoids out of range and when I checked the ribbon cable, it had wore through where one of the clips holds it in place. Drove the car about 200 miles over the course of the week without any issues.
A couple days later I was driving up to the grocery store and the car just quit running. It would turn over, but wouldn't start. I had it towed home and when I tried to scan the engine for codes, I got a message "no response from controller". VCDS couldn't connect to the ECU. I checked all the fuses and replaced the fuel pump relay. Still couldn't scan the ECU. I checked and cleaned the grounds, still no ECU. I took the ECU from one of my "parts" cars and put that in to see if it would recognize it and sure enough it did.
I bought a used ECU, same part number, off of ebay. I put it in and the car started and ran for a couple seconds before the immobilizer cut it off. I'm sending the ECU off for an immobilizer delete.
I know ECU failures are rare. I'm wondering if something "fried" the original ECU. Anything I should look for before the replacement ECU comes back? Thanks.
Eric
I've been working on the 2002 Jetta sedan (2.0l gas, 01m automatic transmission, 192k miles) my daughter drives. I replaced the solenoids and ribbon cable/harness. I had several solenoids out of range and when I checked the ribbon cable, it had wore through where one of the clips holds it in place. Drove the car about 200 miles over the course of the week without any issues.
A couple days later I was driving up to the grocery store and the car just quit running. It would turn over, but wouldn't start. I had it towed home and when I tried to scan the engine for codes, I got a message "no response from controller". VCDS couldn't connect to the ECU. I checked all the fuses and replaced the fuel pump relay. Still couldn't scan the ECU. I checked and cleaned the grounds, still no ECU. I took the ECU from one of my "parts" cars and put that in to see if it would recognize it and sure enough it did.
I bought a used ECU, same part number, off of ebay. I put it in and the car started and ran for a couple seconds before the immobilizer cut it off. I'm sending the ECU off for an immobilizer delete.
I know ECU failures are rare. I'm wondering if something "fried" the original ECU. Anything I should look for before the replacement ECU comes back? Thanks.
Eric