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HOMESERVICE MANUALSJEEP2011COMPASS BASE, 2.4 B, AWD, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTINFOTAINMENTAUDIO (RADIO) - ELECTRICAL DIAGNOSTICSDTC TROUBLESHOOTINGB140A-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT HIGH - PREMIUMDIAGNOSTIC TEST
2011 Jeep Compass Base, 2.4 B, AWD, Standard

Diagnostic Test

2011 Jeep Compass Base, 2.4 B, AWD, StandardSECTION Diagnostic Test
  1. CHECK FOR AN INTERMITTENT CONDITION 
    1. Turn the ignition on and open one of the front doors.
      NOTE:

      A front door must remain open whenever checking or erasing Radio DTCs.

    2. Using the scan tool, record and erase the Radio DTCs.
    3. Turn the Radio on.
    4. Adjust the speakers to the rear and center.
    5. Using the scan tool, read the active Radio DTCs.

      Does the scan tool read: B140A-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT HIGH?

      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.
      • Refer to Standard Procedure and perform the BODY VERIFICATION TEST.
  2. CHECK THE AMPLIFIER 
    Fig 1: Amplifier Harness Connector End View
    GC0149537Courtesy of CHRYSLER LLC
    1. Make sure one of the front doors is still open.
    2. Using the scan tool, erase the DTCs.
    3. Turn the ignition off.
    4. Disconnect the Amplifier C1 harness connector from the Amplifier.
    5. Turn the ignition on.
    6. Turn the radio on.
    7. Using the scan tool, read the active Radio DTCs.

      Does the scan tool read: B140A-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT HIGH?

      Yes 

      • Go To  3.

      No 

      • Replace the Amplifier in accordance with the Service Information.
      • Refer to Standard Procedure and perform the BODY VERIFICATION TEST.
  3. CHECK FOR VOLTAGE ON THE (X51) LEFT REAR AUDIO (+) CIRCUIT 
    Fig 2: Checking For Voltage On Left Rear Audio (+) Circuit
    GC0149540Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Disconnect the Radio C2 harness connector.
    3. Turn the ignition on.
    4. Measure the voltage between ground and the (X51) Left Rear Audio (+) circuit.

      Is there any voltage present?

      Yes 

      • Repair the (X51) Left Rear Audio (+) circuit for a short to voltage.
      • Refer to Standard Procedure and perform the BODY VERIFICATION TEST.

      No 

      • Go To  4.
  4. CHECK FOR VOLTAGE ON THE (X57) LEFT REAR AUDIO (-) CIRCUIT 
    Fig 3: Checking For Voltage On Left Rear Audio (-) Circuit
    GC0149541Courtesy of CHRYSLER LLC
    1. Measure the voltage between ground and the (X57) Left Rear Audio (-) circuit.

      Is there any voltage present?

      Yes 

      • Repair the (X57) Left Rear Audio (-) circuit for a short to voltage.
      • Refer to Standard Procedure and perform the BODY VERIFICATION TEST.

      No 

      • Replace the Radio in accordance with the Service Information.
      • 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.