V50 L5-2.4L VIN 39 B5244S7 (2005)
C70
The function Security on MOST prevents unapproved control modules in the infotainment system from being installed in the vehicle. This is to prevent
the theft of units.
The function is controlled by the infotainment control module (ICM). The infotainment control module (ICM) checks the serial numbers of all the
control modules in the MOST network and compares these with a stored list. The infotainment control module (ICM) retrieves data about the serial
number of the control modules via the MOST network. The infotainment control module (ICM) compares the information with the stored serial numbers.
If a control module is not in the stored list, it is disconnected from the MOST network and the functionality of this control module is blocked. This
means that control modules in the MOST network cannot be moved from one vehicle to another.
A diagnostic trouble code (DTC) is stored in the infotainment control module (ICM) if a control module in the stored list gives the incorrect response.
Description of Parameters
Vehicle Communication Information, Infotainment Control Module (ICM)
Description of parameters
Network activity
Status indicates if there is communication in the MOST network.
Ring break diagnostic
Indicates the status of the most recent Ring break diagnostic.
-
OK = There are no faults in the MOST network.
-
Poor = The infotainment control module (ICM) receives a signal on the MOST network but cannot decode it.
-
Pos 0 - 8 = An open-circuit has been detected in the specified position in the network.
HINT: The number of possible positions varies depending on the number of control modules in the car. MOST locked
The status indicates whether the MOST network is closed and communication possible.
3 dB switch
Status displays if the 3 dB switch is on or off.
Parameters, value
Read off the 30 supply
Measurement range 0-23.5 V.
Normal value 12 -14 V.
The value indicates the power supply to the infotainment control module (ICM).
Read off the 5 V supply voltage
Measurement range 0-10 V.
