VeCeZ22YH hi. is it neccessary to buy new ECU, or it is enough to reset the old one (with car pass and immo code) . fault code in old one is P0621 , generator L terminal circuit malfunction (nightmare). if I need to buy new one, shoud it be the same part number and alpha code, eg 55558138, AA ? thank you. rado
VeCeZ22YH Hi carlos. I meassured charging also. It is good. Problem is excitation. ECU cannot say to alternator to start charging until engine revs are over 2000. then it charges like it should. 13,7-14,1 (depands on outdoor temperature). alternator was reconditioned before 15 000 km.
VeCeZ22YH no, I didn t. not so many z22yh´s here in Bratislava with the same alt to borrow it for while 🙁 . But very good electrician put the alt on the test, nothing wrong, pre-exiciting good, diods good, regulator good, load test good.
VeCeZ22YH do I need to replace ecu or reset ecu using original codes. DTC p0621 (4) stored. wrong excitation of alternator
VeCeZ22YH please can you help me. I can buy clear ECU with same part number and alpha code. what are steps to programm it for engine, keys, immo. step by step using OP COM . is it possible by this tool? thank you