|APPLICABILITY:||All 2014-15MY Forester, Impreza, XV Crosstrek|
|2015MY WRX & STI Models|
|SUBJECT:||Diagnostics for DTC B1500 and U1500|
This bulletin provides information currently missing from the Service Manual for diagnosing Body Integrated Unit (BIU) DTCs B1500 and U1500 (Keyless UART Communication Malfunction on the push-button start vehicles) as listed above. Diagnostics are included in the current version of the Service Manual for DTC U1500 but only for key-start vehicles. The Service Manuals will be updated to include this information in the near future.
(UART= Universal Asynchronous Receiver Transmitter)