Audio - No Audio For Various Systems/DTC B7F491
SI B65 39 09Audio, Navigation, Monitors, Alarms, SRS
September 2010
Technical Service
This Service Information bulletin supersedes SI B65 39 09 dated August 2010.
[NEW] designates changes to this revision
SUBJECT
No Audio Output in All Modes
MODEL
F01, F02* (7 Series) from 08/01/2009 to 12/31/2009
F07* (5 Series Gran Turismo) from SOP to 12/31/2009
E70* (X5) from 08/01/12009 to 12/31/2009
E71* (X6) from 08/01/2009 to 12/31/2009
E72* (ActiveHybrid X6) from 08/01/2009 to 12/31/2009
*With option 677 (HiFi System Professional)
SITUATION
On the above-mentioned cars, there is no audible output for the following systems:
^ Audio sound system (radio, CD/DVD, AUX-In, USB, etc.)
^ Warning gongs
^ Park Distance Control
^ Navigation system
^ Speech Recognition System
^ Rear Seat Entertainment System
^ Hands-free phone calls (SOS call is not affected)
CAUSE
Software and/or hardware error in the top HiFi amplifier
In the case of a software error, fault code B7F491 (Internal control unit error) is stored in the AMPT07 (amplifier).
PROCEDURE
^ Perform a vehicle test and check whether fault code B7F491 is stored in the amplifier.
^ When no fault code is stored in the amplifier, refer to Attachment_A.
^ If fault code B7F491 is stored in the amplifier, delete the fault code entry and reprogram the vehicle using ISTA/P 2.37.0 or later.
Note that ISTA/P will automatically reprogram and code all programmable control modules that do not have the latest software.
For information on programming and coding with ISTA/P, refer to CenterNet / Aftersales Portal / Service / Workshop Technology / Vehicle Programming.
PARTS INFORMATION
WARRANTY INFORMATION
ATTACHMENT
View B653309 - Procedure