Just finished building an ELM323 ISO interface and can't get it to work.
When plug into OBD port green LED comes on and others flash in a sequence. ELM323 v1.1 appears on Hyperterminal screen.
atz gives ELM323 v1.1
0100 gives BUS INIT: FB ERROR
0101 gives BUS INIT: FB ERROR
Tried on a '96 Chrysler T&C and a 96' Volvo 850, both OBDII compliant.
I will go back and verify cable pin outs again.
Any help appreciated.
I read another post from scoobieguy that stated t1 and t2 had to be exact 2N3904. ELM schematic says 3904 or similiar. I couldn't find any 3904 and used some that are supposed to be identical. Should I go searching for the 3904's or is that not likely my problem? The ones they sold me say FPN 5910. Thanks.