Lancer L4-2.4L (4B12) (2009)
Hands Free Module Power Supply Circuit
FUNCTION
During the conversation with the hands free cellular phone system, the signal of speaker's voice is transmitted from the microphone unit to the hands free
module. Then the signal is transmitted from the hands free module to the cellular phone. The voice of other party is transmitted from the cellular phone
to the hands-free module. Then, the voice is transmitted from the hands free module to the radio and CD player [vehicles without MMCS] or audio visual
navigation unit [vehicles with MMCS], and output from the speaker.
TROUBLE JUDGMENT CONDITIONS
If the hands free cellular phone system cannot be used normally, the hands free module, microphone unit, steering wheel voice control switch, or radio
and CD player [vehicles without MMCS] or audio visual navigation unit [vehicles with MMCS] may be defective.