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Home >> Dodge and Ram >> 2018 >> Charger Pursuit, 5.7L Eng VIN T, 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> (Audio (Radio) - Electrical Diagnostics) >> DTC Troubleshooting >> B143D-13-Microphone 2 - Circuit Open >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR AN ACTIVE DTC 
    NOTE:

    Verify the connection of the Inside Rearview Mirror harness connector.

    1. With the scan tool, read Radio DTCs and record on the repair order.
    2. With the scan tool, erase DTCs.
    3. With the scan tool, read Radio DTCs.

      Did the DTC return?

      Yes 

      • Go To  2

      No 

      • The condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension. If no problems are found, test complete.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  2. CHECK THE INSIDE REARVIEW MIRROR 
    1. Turn the ignition off.
    2. Disconnect the Inside Rearview Mirror harness connector
    3. Connect a jumper wire between the (X722) Microphone 2 IN (+) and the (X723) Microphone 2 IN (-) circuits at the Rearview Mirror harness connector.
    4. Turn the ignition on.
    5. With the scan tool, read Radio DTCs.

      Did the DTC return?

      Yes 

      • Go To  3

      No 

      • Replace the Inside Rearview Mirror in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  3. CHECK THE (X722) MICROPHONE 2 IN (+) CIRCUIT FOR AN OPEN 
    1. Turn the ignition off.
    2. Disconnect the Radio harness C1 connector.
    3. Measure the resistance of the (X722) Microphone 2 IN (+) circuit between the Inside Rearview Mirror and Radio C1 harness connectors.

      Is the resistance below 3.0 Ohms?

      Yes 

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

      No 

      • Go To  4
  4. CHECK THE (X723) MICROPHONE 2 IN (-) CIRCUIT FOR AN OPEN 
    1. Measure the resistance of the (X723) Microphone 2 IN (-) circuit between the Inside Rearview Mirror and Radio C1 harness connectors.

      Is the resistance below 3.0 Ohms?

      Yes 

      • Repair the (X723) Microphone 2 IN (-) circuit for an open.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

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