Optical Fiber (LWL) - Module

In all MOST control units, at least one sending diode and one receiver diode are installed. The sending diode of a MOST device is connected to a receiver diode of a 2nd MOST device. This results in a ring where the light signal is reinforced in each control unit (in each control unit, the light signal is transformed into an electrical signal).

The graphic clarifies the cabling of the individual MOST control units which vary according to their equipment.

Fig 1: Module - Optical Fiber (LWL) Diagram

Courtesy of PORSCHE OF NORTH AMERICA, INC.

1. MOST control units:
   • -A-  Radio/PCM, line -1-  connected with an amplifier or CD - changer without a telephone. See Fig 1 .
   • -A-  Radio/PCM, line -2-  connected with a telephone, without amplifier or CD - changer. See Fig 1 .
   • -A-  Radio/PCM, line -3-  connected with a telephone and amplifier or CD - changer. See Fig 1 .
   • -B-  amplifier, line -4-  without CD - changer. See Fig 1 .
   • -B-  amplifier, line -5-  with CD - changer. See Fig 1 .
   • -C-  CD - changer, without amplifier line -6-  . See Fig 1 .
   • -D-  telephone, line -2-  and connected with an amplifier, CD - changer line -3-  . See Fig 1 .
   • -E-  LWL joint, this is located above the brake booster. See Fig 1 .