Media Oriented Systems Transport (MOST) Wiring Repair

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

If harness repair/analysis is performed, MOST bus Twist Pair unshielded wire should be 0.35 mm² (22 AWG) wire with at least one twist per each 1 45/64 inch (45 mm) and must not be untwisted for more than 3 15/16 of an inch (10 cm).

The following conditions need to be met to ensure a valid continuity:

Untwisted length for all MOST 50 circuits at each wire harness connector should be no longer 50 mm max (25 mm preferred).
When wire repairs are made, a minimum 25 twists/meter for all MOST 50 circuits.
MOST 50 has specific receive and transmit I/O.

The transmit of one module is connected to receive of the next module in ring topology.