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Home >> Chrysler >> 2012 >> 300 C, 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Amplifier (Amp) - Electrical Diagnostics - Except SRT8 >> DTC Troubleshooting >> B146F-11-Channel 4 Audio Speaker Output - Circuit Short To Ground >> Diagnostic Test

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 Amplifier DTCs.

    2. With the scan tool, record and erase the Amplifier DTCs.
    3. Cycle the ignition switch from on to off, wait five seconds and then back to on.
    4. Turn the Radio on.
    5. Adjust the speakers to the front and center.
    6. With the scan tool, read the active Amplifier DTCs.

      Does the scan tool display active: B146F-11-CHANNEL 4 AUDIO SPEAKER OUTPUT - CIRCUIT SHORT TO GROUND?

      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.
      • Perform BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  2. CHECK THE RIGHT FRONT DOOR SPEAKER 
    Fig 1: Right Front Door Speaker Connector End View
    GC0089666Courtesy of CHRYSLER GROUP, LLC
    1. Make sure one of the front doors is still open.
    2. With the scan tool, erase the DTCs.
    3. Turn the ignition off.
    4. Disconnect the Right Front Door Speaker harness connector.
    5. Turn the ignition on.
    6. Turn the Radio on.
    7. With the scan tool, read the active Amplifier DTCs.

      Does the scan tool display active: B146F-11-CHANNEL 4 AUDIO SPEAKER OUTPUT - CIRCUIT SHORT TO GROUND?

      Yes 

      • Go To  3.

      No 

  3. CHECK THE (X202) RIGHT FRONT DOOR SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND 
    Fig 2: Checking Right Front Door Speaker (+) Circuit For A Short To Ground
    GC0089667Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the Amplifier C2 harness connector.
    3. Measure the resistance between ground and the (X202) Right Front Door Speaker (+) circuit.

      Is the resistance below 10K Ohms?

      Yes 

      • Repair the (X202) Right Front Door Speaker (+) circuit for a short to ground.
      • Perform BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  4.
  4. CHECK THE (X292) RIGHT FRONT DOOR SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND 
    Fig 3: Checking Right Front Door Speaker (-) Circuit For A Short To Ground
    GC0089668Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance between ground and the (X292) Right Front Door Speaker (-) circuit.

      Is the resistance below 10K Ohms?

      Yes 

      • Repair the (X292) Right Front Door Speaker (-) for a short to ground.
      • Perform BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No