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Home >> Mercedes Benz >> 2025 >> eSprinter Base, _NA_ >> Repair and Diagnosis >> External Pages >> Different car >> Section 3284 (Amplifier (Amp) - Premium - DTCS B1483-11 To U147E-00) >> DTC Troubleshooting >> B14BE-13-Channel 10 Audio Speaker Output - Circuit Open >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2020 Chrysler Voyager and 2020 Chrysler Pacifica. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR AN ACTIVE DTC 
    1. Turn the ignition on and open one of the front doors.
      NOTE:

      A front door must remain open whenever checking or erasing Amplifier (AMP) DTCs.

      NOTE:

      The Rear Tweeter Speakers are wired in series.

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

      Did the DTC return?

      Yes 

      • Go to 2

      No 

  2. CHECK THE OPERATION OF THE RIGHT AND LEFT REAR TWEETER CIRCUITS SPEAKER 
    1. Turn the ignition off.
    2. Disconnect the Right Rear Tweeter Speaker harness connector.
    3. Disconnect the Left Rear Tweeter Speaker harness connector.
    4. Turn the ignition on.
    5. Turn the Radio on and turn the volume to 25.
    6. Adjust the speakers to the rear and center.
    7. With a voltmeter set to read in A/C voltage, measure the voltage of the (X282) Rear Right Tweeter Speaker circuit (-) and the (X214) Rear Tweeter Left (+) at the Right Tweeter Speaker harness connector and the Left Rear Tweeter Speaker harness connector.

      Is the voltage present greater than 1.0 volt?

      Yes 

      • Go to 5

      No 

      • Go to 3
  3. CHECK THE (X282) REAR RIGHT TWEETER SPEAKER (-) CIRCUIT FOR AN OPEN 
    1. Turn the ignition off.
    2. Disconnect the Amplifier C3 harness connector.
    3. Measure the resistance of the (X282) Rear Right Tweeter Speaker (-) circuit between the Amplifier C3 harness connector and the Right Rear Tweeter Speaker harness connector.

      Is the resistance below 3.0 Ohms?

      Yes 

      • Go to 4

      No 

      • Repair the (X282) Rear Right Tweeter Speaker (-) circuit for an open.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  4. CHECK THE (X214) REAR TWEETER LEFT SPEAKER (+) CIRCUIT FOR AN OPEN 
    1. Measure the resistance of the (X214) Rear Tweeter Left Speaker (+) circuit between the Amplifier C3 harness connector and the Left Rear Tweeter Speaker harness connector.

      Is the resistance below 3.0 Ohms?

      Yes 

      • Go to 5

      No 

      • Repair the (X214) Rear Tweeter Left Speaker (+) circuit for an open.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  5. CHECK THE (X284) LEFT REAR TWEETER SPEAKER (-) CIRCUIT AND THE (X212) RIGHT REAR TWEETER SPEAKER (+) FOR AN OPEN 
    1. Turn the ignition off.
    2. Measure the resistance of the (X284) Left Rear Tweeter Speaker (-) circuit and the (X212) Right Rear Tweeter Speaker (+) circuit between the Left Rear Tweeter Speaker harness connector and the Right rear Tweeter Speaker Harness connectors.

      Is the resistance below 3.0 Ohms?

      Yes 

      • Go to 6

      No 

      • Repair the (X284) Left Rear Tweeter Speaker (-) circuit or the (X212) Right Rear Tweeter Speaker (+) circuit for an open.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  6. CHECK THE OPERATION OF THE RIGHT AND LEFT REAR TWEETER SPEAKERS 
    1. Reconnect the Left Rear Tweeter Speaker harness connector.
    2. Reconnect the Amplifier C3 harness connector
    3. Connect a jumper wire between the (X212) Rear Tweeter Right circuit and the (X284) Rear Left Tweeter circuit at the Right Rear Tweeter Speaker harness connector.
    4. Turn the ignition on.
    5. With the Scan tool, erase DTCs.
    6. Turn the Radio on and turn the volume to 25.
    7. Adjust the speakers to the rear and center.
    8. With the scan tool, read DTCs.

      Is the DTC active?

      Yes 

      No 

      • Go to 7
  7. CHECK THE OPERATION OF THE RIGHT AND LEFT REAR TWEETER SPEAKERS 
    1. Turn the ignition off.
    2. Disconnect the Left Rear Tweeter Speaker harness connector.
    3. Reconnect the Right Rear Tweeter Speaker harness connector.
    4. Connect a jumper wire between the (X284) Rear Tweeter Left (-) circuit and the (X214) Rear Left Tweeter circuit (+) at the Left Rear Tweeter Speaker harness connector.
    5. Turn the ignition on.
    6. With the Scan tool, erase DTCs.
    7. Turn the Radio on and turn the volume to 25.
    8. Adjust the speakers to the rear and center.
    9. With the scan tool, read DTCs.

      Is the DTC active?

      Yes 

      No 

      • Go to 8
  8. CHECK RELATED HARNESS CONNECTIONS 
    1. Disconnect all Amplifier harness connectors.
    2. Disconnect all related in-line harness connections (if equipped).
    3. Disconnect the related component harness connectors.
    4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
      • Proper connector installation.
      • Damaged connector locks.
      • Corrosion.
      • Other signs of water intrusion.
      • Weather seal damage (if equipped).
      • Bent terminals.
      • Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
      • Terminals that have been pushed back into the connector cavity.
      • Perform a terminal drag test on each connector terminal to verify proper terminal tension.

      Repair any conditions that are found.

    5. Reconnect all Amplifier harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
    6. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
    7. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
    8. With the scan tool, erase DTCs.
    9. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
    10. With the scan tool, read Amplifier DTCs.

      Did the DTC return?

      Yes 

      No 

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