MOST Network Diagnostic Bypass Loop – Genuine Volvo 8688083

An optical bypass connector for diagnosing and servicing the MOST (Media Oriented Systems Transport) network, which links Volvo's multimedia and infotainment modules - radio/ICM, amplifier, subwoofer, antenna module, telephone module, etc. - in a closed optical ring.

What it's for:
The MOST network operates as a closed optical ring. If a module is disconnected, faulty, or removed for replacement/repair, the ring breaks ("ring break") and the entire network stops working (the ICM logs a fault, typically DTC U0028 / ICM-DC02). The bypass loop replaces the missing/faulty module in the optical path, closes the ring, and lets the rest of the system keep working - used when servicing a module (e.g. amplifier, CD changer) or diagnosing a network ring break.

Technical specifications:

• Genuine Volvo part number: 8688083
• Type: MOST network optical bypass loop

Fits models:

Volvo C30 2007, 2008, 2009, 2010, 2011

Volvo C30 2.5l 5 cylinder Turbo 2012, 2013

Volvo C70 2006, 2007

Volvo C70 2.5l 5 cylinder Turbo 2008, 2009, 2010, 2011, 2012, 2013

Volvo S40 2004, 2005, 2006, 2007, 2008, 2009, 2010

Volvo S40 2.5l 5 cylinder Turbo 2011, 2012

Volvo S60 2007, 2008, 2009, 2011, 2012, 2013, 2014, 2015, 2016

Volvo S60 2.0l 4 cylinder Turbo 2017, 2018

Volvo S60 Inscription 2016

Volvo S60 Inscription 2.0l 4 cylinder Turbo 2017, 2018

Volvo S80 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015

Volvo S80 2.0l 4 cylinder Turbo 2016

Volvo V50 2005, 2006, 2007, 2008, 2009, 2010

Volvo V50 2.5l 5 cylinder Turbo 2004, 2011, 2012

Volvo V60 2014, 2015, 2016

Volvo V60 2.0l 4 cylinder Turbo 2017, 2018

Volvo V60 Cross Country 2.0l 4 cylinder Turbo 2017, 2018

Volvo V60 Cross Country 2.5l 5 cylinder Turbo 2015, 2016

Volvo V70 2007, 2008, 2009

Volvo V70 3.2l 6 cylinder 2010

Volvo V70 XC 2.5l 5 cylinder Turbo 2007

Volvo XC40 2021, 2022

Volvo XC40 2.0l 4 cylinder Turbo 2018, 2019, 2020

Volvo XC60 2010, 2011, 2012, 2013, 2014, 2015, 2016

Volvo XC60 2.0l 4 cylinder Turbo 2017

Volvo XC60 3.0l 6 cylinder Turbo 2009

Volvo XC70 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016

Volvo XC70 3.2l 6 cylinder 2008

Volvo XC90 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2021, 2022

Volvo XC90 2.0l 4 cylinder Turbo 2016, 2017, 2018, 2019, 2020

Volvo XC90 3.2l 6 cylinder 2012, 2013, 2014