Lancer Evolution L4-2.0L Turbo (4B11T/C) (2010)
Hands Free Cellular Phone System Circuit (Part 2)
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 multivision
display [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 multivision display [vehicles with MMCS] may be defective.
TROUBLESHOOTING HINTS
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The hands free module may be defective.
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The microphone unit may be defective.
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The steering wheel voice control switch may be defective.
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The radio and CD player [vehicles without MMCS] or multivision display [vehicles with MMC]] may be defective.
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Damaged harness wires and connectors
DIAGNOSIS
Required Special Tools:
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MB991223: Harness Set
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MB992006: Extra Fine Probe
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MB991958: Scan Tool (M.U.T.-III Sub Assembly)
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MB991824: Vehicle Communication Interface (V.C.I.)
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MB991827: M.U.T.-III USB Cable
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MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system)