If a control unit becomes too hot, this control unit switches off for up to 10 minutes to protect the individual components against damage. Furthermore, the entire MOST bus can switch off for 10 minutes. After the control unit has cooled down, it is functional once again!
If the fault ”Deactivation, excess temperature” is stored in a MOST control unit, the control unit concerned and the Multi Audio System Controller (or Car Communication Computer) also store the fault. The fault in the Multi Audio System Controller (or Car Communication Computer) is evaluated in the test module.
The Multi Audio System Controller (or Car Communication Computer) is only displayed if it has switched itself off due to excess temperature.
The Top HiFi amplifier can also only disable its functions at high temperatures. If the customer is currently listening to music, the following fault pattern results:
The Top HiFi amplifier does not make a fault code memory entry. The MOST framework remains functional. After the control unit has cooled down, the Top HiFi amplifier is functional once again!