MOST Component Check

MOST Component Check

NOTE: When there is a customer complaint or identifiable problems but no fault code entries, firstly the 'MOST component check' is to be selected in the PCM2 function selection menu and then the 'MOST system check' is to be carried out.

The MOST component check can be reached via the menu PCM2 function selection. This comprises a summary of the following check processes:
- MOST System check (ignition on.)
- Diagnosis, open circuit in ring line (ignition on.)
- Optical performance check
- Data transmission check
- MOST system check (when the engine is running)
- Diagnosis, open circuit in ring line (when the engine is running)

The MOST components check 'MOST system check' is to be carried out when the display indicates 'unavailable MOST control modules'. If no fault code is stored, the '* 'symbol indicates a 'differing required and actual installed components list' in the Control modules menu in front of the 'PCM2' system and in the 'PCM2 MMI function selection menu' in front of the option 'MOST required installed components list'. A comparison of these two lists can determine missing components.

MOST System check (ignition on.)
This check can only be carried out when the engine is not running.







Ring break diagnosis (ignition on.)
This check can only be carried out when the engine is not running.







Optical performance check







Data transmission check







MOST system check (when the engine is running)







Ring break diagnosis (when the engine is running)