smotorsport
16th March, 2023, 02:37 PM
Hi, a friend of mine has bought a non runing s80. Car came to me as no crank no start without any history. I hooked the scanner and I got in ecm error for sync with cem and in cem error for wrong transponder. Then I removed cem and ecm from car and saw that on cem is written "renew" . However I read the flash 28f400 and eeprom 95p08 from ecu and put them in volvo sync utility - managed to sync them and error from engine ecu went away, but in the cem error for wrong transponder stayed. On live data from cem "ID recieved: yes, ID stored: NO". Then I decided to check the keys ID and non of them matched the ones in the cem. I tried making vvdi super chip with the dump from cem with some of the ID's stored in it but still no crank and ID recieved: NO, ID stored: NO. Then I made new transponder with Xhorse keytool plus again from the cem dump on position number 4 and wrote the new flash into the cem 28f400. Now car cranks and it has spark but I think no injectors are opening. Error from cem is gone from engine ecu also. On live data ID recieved YES, ID stored YES, Start enable YES, ECM Data recieved turns to YES when I turn ignition ON and then back to NO but I think this is normal? Only thing that is no is the VIN OK - NO. So at the end I think someone changed the CEM from another car and havent programmed it to this car. Can a VIN Mismatch cause no start (no injector pulse), or I have another problem. I attach dumps ORI from CEM and engine ECU and synced dumps with new key in position 4, also with pictures from live data, along with txt file with the original vin of the car. Can someone have a look and say if there is any problem and if its possible to change the vin of the cem (if its wrong).