Lancer Sportback L4-2.4L (4B12) (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.
TROUBLE JUDGMENT CONDITIONS
During the conversation with the hands free cellular phone system, if the speaker's voice cannot be heard by the other party, the hands free module or
microphone unit may be defective.
TROUBLESHOOTING HINTS
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Hands free module may be defective
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Microphone unit may be defective
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The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector
DIAGNOSIS
Required Special Tools:
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MB991223: Harness Set
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MB992006: Extra Fine Probe
STEP 1. Check the cellular phone.
Check that the cellular phone can be used normally as a unit.
Q: Is it possible to use the cellular phone normally?
YES : Go to Step 2.
NO : Repair or replace the cellular phone.
STEP 2. Check hands-free module connector C-110 and microphone unit connector D-03 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Are hands-free module connector C-110 and microphone unit connector D-03 in good condition?
YES : Go to Step 3.
NO : Repair or replace the damaged component(s).