220 589 00 99 38 Adapter cable - WS54.00-P-0050-38B
WARNING: This page is about a different car, the 2012 Mercedes-Benz C300, 2011 Mercedes-Benz C300, 2010 Mercedes-Benz C300, 2009 Mercedes-Benz C300, and 2008 Mercedes-Benz C300. However, it is still accessible from the selected car via links, so may be relevant.
FG54/Set B
MODEL 216, 221, 204
Use:
2-pin adapter cable for voltage and resistance measurement and checking of signals at voltage distributor of CAN bus for powerplant, telematics, vehicle dynamics, suspension, interior and central area.