Lancer L4-2.4L (4B12) (2009)
Check whether you can operate the radio and CD player by using the steering remote control.
Q: Is the check result normal?
YES : The trouble can be an intermittent malfunction.
NO : Replace the radio and CD player.
Inspection Procedure 2
Inspection Procedure 2: Steering Wheel Audio Remote Control Switch does not Function. [Vehicles with MMCS]
CAUTION: Before replacing the audio visual navigation unit, ensure that the power supply circuit, the ground circuit and the communication
circuit are normal.
Steering Audio Switch Circuit (Part 1)