Alfa 156 TS ABS and ECUs
Posted: 02 Aug 2024, 23:13
My Alfa 2000 156 had numerous electrical faults
Using the Fuch interface to begin with I could only connect to the airbag ecu, repaired pretensioners but could clear ecu fault, replaced airbag ecu and cleared its faults. That worked fine, the ABS and brake light come on after 10km, when the faults up I can not connect to any ecu, some time will connect to ABS ecu, but shows no errors unless I disconect a wheel sensor and it will then then clear. If I acuate pump, static test they work until I get to rear related abs items there is no noise when testing those and it will disconnect from the ecu. Have check all fuses battery voltage, earths and connectors did just find bad earth to engine ecu, but made no difference when repaired.
If I do a scan it doesnt see any ecus, or maybe just the airbag. Any help would be much appreciated
Have since found and high resistance earth to engine ecu and after replacing that and more cleaning of the abs ecu connection managed to drive 40km with out rhe abs fault. It did come on later while just turning ignition on and then self clear, will have another drive today and hopefully it remains off
Using the Fuch interface to begin with I could only connect to the airbag ecu, repaired pretensioners but could clear ecu fault, replaced airbag ecu and cleared its faults. That worked fine, the ABS and brake light come on after 10km, when the faults up I can not connect to any ecu, some time will connect to ABS ecu, but shows no errors unless I disconect a wheel sensor and it will then then clear. If I acuate pump, static test they work until I get to rear related abs items there is no noise when testing those and it will disconnect from the ecu. Have check all fuses battery voltage, earths and connectors did just find bad earth to engine ecu, but made no difference when repaired.
If I do a scan it doesnt see any ecus, or maybe just the airbag. Any help would be much appreciated
Have since found and high resistance earth to engine ecu and after replacing that and more cleaning of the abs ecu connection managed to drive 40km with out rhe abs fault. It did come on later while just turning ignition on and then self clear, will have another drive today and hopefully it remains off