With TCU 1.5

Fault profiles for voice quality and audio output
The following table lists the fault profiles covered in this test module.

Voice quality / audio output
1 The telephone call is not output across the loudspeakers in the hands-free mode.
2 Poor voice quality (call via hands-free system)
3 Sporadic call interruptions.
4 When the vehicle is started during an active call, the call is lost for approx. 20 seconds.
5 The conversational partner outside of the vehicle hears an echo of his own voice (call via hands-free system).