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Home >> Chrysler >> 2014 >> 200 Limited, 2D Convertible >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Audio (Radio) - Electrical Diagnostics >> DTC Troubleshooting >> B143F-Microphone 2 Circuit High >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR ACTIVE DTC 
    1. With the scan tool, read the active DTCs.
    2. Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per cycle.
    3. Attempt to make a phone call with the system.
    4. With the scan tool, read the active DTCs.

      Does the scan tool display this DTC as active?

      Yes 

      • Go To  2

      No 

      • If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  2. INSIDE REARVIEW MIRROR 
    Fig 1: Checking Inside Rearview Mirror
    GC0106318Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the Rearview Mirror harness connector.
    3. Turn the ignition on.
    4. With the scan tool, read the active DTCs.

      Does the scan tool display this DTC as active?

      Yes 

      • Go To  3

      No 

      • Replace the Rearview Mirror in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  3. (X722) MICROPHONE 2 IN (+) CIRCUIT SHORTED TO VOLTAGE 
    Fig 2: Checking Microphone 2 In (+) Circuit For A Short To Voltage
    GC0124268Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the Radio C2 harness connector.
    3. Turn the ignition on.
    4. Measure the voltage of the (X722) Microphone 2 IN (+) circuit.

      Is the voltage above 1.0 volt?

      Yes 

      • Repair the (X722) Microphone 2 IN (+) circuit for a short to voltage.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  4
  4. (X722) MICROPHONE 2 IN (+) CIRCUIT OPEN 
    Fig 3: Checking Microphone 2 IN (+) Circuit For An Open
    GC0124269Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Measure the resistance of the (X722) Microphone 2 IN (+) circuit between the Radio C2 connector and the inside rearview mirror connector.

      Is the resistance below 5.0 ohms?

      Yes 

      • Replace the Radio in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Repair the (X722) Microphone 2 IN (+) circuit for an open.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
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