Alarm and regular horn has not been working. Checked fuses - all good. Been studying fsm wiring. scaned codes are; 01134 alarm horn h12; 03266 Control circuit for signal horn; 01259 fuel pump relay J17. Switched 646 relay with the other 646 relay (no change) Traced j17 and I think it is the 646 relay but have to study it more. If anyone has ideas would appreciate.