TJ34618.6.0-2020

VOLVO CAR
SERVICE AND PARTS BUSINESS
Technical Journal
TITLE:
IHU, scratching electrical noise from sound system after start-up
REF NO:
ISSUING DEPARTMENT:
CAR MARKET:
TJ 34618.6.0
Technical Service
United States and Canada
PARTNER:
ISSUE DATE:
STATUS DATE:
3 US 7510 Volvo Car USA
2019-12-12
2020-01-28
FUNC GROUP:
3930
FUNC DESC:
Equipment for entertainment
(radio/TV/VC
Page 1 of 2
“Right first time in Time”
Attachment
File Name
TJ 34618.mp4
File Size
4.8100 MB
Vehicle Type
Type
Eng
Eng
Desc
Sales
Body
Gear
Steer
224
225
227
235
236
238
246
256
536
Model Year
2019-2020
2019-2020
2019-2020
2019-2020
2019-2020
2019-2020
2019-2020
2019-2020
2019-2020
Plant
Chassis range
-
Struc Week
Range
201835-201945
201817-201945
201846-201945
201817-201945
201817-201945
201817-201945
201817-201945
201817-201945
201817-201945
CSC Customer Symptom Codes
Code
8Y
FC
FW
FY
Description
Audio other/Volume changes unexpectedly
Audio other/Other audio problems
Speakers/Crackly sound
Speakers/Distorted sound
Produced in the USA and available as an electronic document. Hard copy documents are printed in USA on recycled paper containing
a minimum of 50% wastepaper and 10% post-consumer waste.
© 2020 VOLVO CAR USA, LLC
Technical Journal 34618.6.0
VST Operation Number
VST Operation Number
36004-2
Description
Software Control Module downloading
DTC Diagnostic Trouble Codes
Rows beginning with * are modified
Note! If using a printed copy of this Technical Journal, first check for the latest online version.
Text
DESCRIPTION:
IHU = Infotainment Head Unit
If the vehicle sound system produces a scratching or screeching electrical noise after start-up, it may be
the result of a rare timing issue at start-up, see advice under SERVICE.
For reference of the scratching noise, please open attached mp4 video clip: TJ 34618.mp4
SERVICE:
Please do NOT replace any components due to this symptom.
Perform a Total Upgrade in accordance with TJ 31543.
(To reduce the possibility of this symptom, an improved IHU software was released week 49, 2019)
* Note! The symptom may still appear with the latest IHU software, a second software improvement is
under development and is expected to be released mid-June 2020.
This TJ will be updated when the improved software is available.
Warranty claim info:
To get warranty claims accepted for a job described in this TJ, please use warranty claim data as
mentioned in TJ 31543.
VEHICLE REPORT:
Yes, please submit a Vehicle Report if the service solution described in this TJ has no effect. Use
concern area “Vehicle Report” and sub concern area “Support Not Needed”, use function group 3930.
This TJ has one sound file.
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2020-01-28