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HOMESERVICE MANUALSJEEP2011COMPASS BASE, 2.0 A, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTINFOTAINMENTAUDIO (RADIO) - ELECTRICAL DIAGNOSTICSDTC TROUBLESHOOTINGB143A-MICROPHONE 1 CIRCUIT PERFORMANCEDIAGNOSTIC TEST
2011 Jeep Compass Base, 2.0 A, Standard

Diagnostic Test

2011 Jeep Compass Base, 2.0 A, StandardSECTION Diagnostic Test
  1. CHECK FOR ACTIVE DTC 
    1. Turn the ignition on.
    2. With the scan tool, read the active DTCs.

      Does the scan tool display this DTC as active?

      Yes 

      • Go To  2.

      No 

      • Test complete, 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.
  2. INSIDE REARVIEW MIRROR 
    1. Turn the ignition off.
    2. Disconnect the Inside Rearview Mirror C2 harness connector.
    3. Turn the ignition on.
    4. With the scan tool, read the DTCs.

      Does the scan tool display this DTC as active?

      Yes 

      • Go To  3.

      No 

      • Replace the Inside Rearview Mirror in accordance with the service information.
      • Refer to Standard Procedure and perform the BODY VERIFICATION TEST.
  3. (X712) MICROPHONE 1 IN (+) CIRCUIT SHORTED TO GROUND 
    1. Turn the ignition off.
    2. Disconnect the Radio C2 harness connector.
    3. Measure the resistance between ground and the (X712) Microphone 1 circuit.

      Is the resistance below 10K Ohms?

      Yes 

      • Repair the (X712) Microphone 1 circuit for short to ground.
      • Refer to Standard Procedure and perform the BODY VERIFICATION TEST.

      No 

      • Go To  4.
  4. (X712) MICROPHONE 1 IN (+) CIRCUIT SHORTED TO VOLTAGE 
    1. Turn the ignition on.
    2. Measure the voltage of the (X712) Microphone 1 IN (+) circuit.

      Is voltage present?

      Yes 

      • Repair the (X712) Microphone 1 IN (+) circuit for a short to voltage.
      • Refer to Standard Procedure and perform the BODY VERIFICATION TEST.

      No 

      • Go To  5.
  5. (X712) MICROPHONE 1 IN (+) CIRCUIT OPEN 
    1. Measure the resistance of the (X712) Microphone 1 IN (+) circuit between the Radio C2 connector and the Inside Rearview Mirror C2 harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Replace the Radio in accordance with the service information.
      • Refer to Standard Procedure and perform the BODY VERIFICATION TEST.

      No 

      • Repair the (X712) Microphone 1 IN (+) circuit for an open.
      • Refer to Standard Procedure and perform the BODY VERIFICATION TEST.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.