Fault-Tracing Information

Fault causes which will stop handsfree equipment working:

• Poor connection between the telephone and telephone holder
• The customer mobile phone is not set up for handsfree mode
• Fault in one of the power supply cables
• Defective fuse in one of the power supply cables
• Damaged loudspeaker(s) in the car
• The microphone switch is not properly connected
• Fault in the cable to the microphone
• Damaged microphone
• Fault or loose connection in the terminal for the handsfree box to the 15-supply.

• Continue 

  Refer to Checking the Power Supply And Ground Terminal