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readings from ecu pins. key in run. 55 - 12V 16 - 0.51V 3 - 0 15 - 4.6 13 - 0.5 24 - 0 25 - 0 51 - 0 77 - 0 97 - 11.5 71 - 11.5 97 & 71 are pwr to injectors 55 is under hood fuse 1. const power 15 is pin 10 on datalink 16 is pin 2 on ecu 13 is pin 13 on datalink, is eeprom all ecu zero reads...

ecu relay is being activated. still no datalink connect unless cranking the engine. i have all the grounds and powers at ecu connector marked. was wondering if its valid to measure the pins with ecu disconnected. i don't want to probe the wires unless its the only way. i poured over schems long...

joegr, yes that's what drifted into my head while trying to sleep last night. i guess i came to having an extra ecm because i didn't want to dive into wiring.... oh well. i will first see if i have signal to relay. thanks.

my ecm will not connect to reader unless i'm cranking. no codes. it won't start. i have fuel pressure. switched starter and ecm relay. same thing. got reman ecm. same thing. traction control off light is on. to recap, plug in reader, put key to on and reader will not connect. start cranking and...

introductions. i've a 1997 m8. 126K miles.