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Home >> Fiat >> 2016 >> 500 c Easy, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 24 ((Entertainment TELEMATIC Module (ETM) - Electrical Diagnostics - 500 - Electric)) >> DTC Troubleshooting >> B1400-13-Front Left Audio Speaker Output-Circuit Open-Base >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FOR AN ACTIVE DTC 
    NOTE:

    This vehicle has a Front Tweeter wired in parallel with the Front Speaker.

    1. Turn the ignition on and open one of the front doors.
      NOTE:

      A front door must remain open whenever checking or erasing Entertainment Telematic Module (ETM/LTM) DTCs.

    2. With the scan tool, read ETM DTCs and record on the repair order.
    3. Cycle the ignition from on to off, wait five seconds and then back to on.
    4. Turn the radio on and set the volume to 25.
    5. Adjust the speakers to the front and center.
    6. With the scan tool, read ETM 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 LEFT FRONT DOOR SPEAKER 
    1. Turn the ignition off.
    2. Disconnect the Drivers Front Door Speaker harness connector.
    3. Measure the resistance of the speaker between the two terminals.

      Is the resistance below 3.0 Ohms?

      Yes 

      • Replace the Left Front Door Speaker in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

      • Go To  3
  3. CHECK THE LEFT FRONT TWEETER 
    1. Turn the ignition off.
    2. Disconnect the Left Front Tweeter harness connector.
    3. Measure the resistance of the speaker between the two terminals.

      Is the resistance below 3.0 Ohms?

      Yes 

      • Replace the Left Front Tweeter in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

      • Go To  4
  4. CHECK THE (X201) LEFT FRONT DOOR SPEAKER (+) CIRCUIT FOR AN OPEN 
    1. Disconnect the ETM harness C1 connector.
    2. Measure the resistance of the (X201) Drivers Front Door Speaker (+) circuit between the ETM C1 harness connector and the Left Front Speaker harness connector.

      Is the resistance below 3.0 Ohms?

      Yes 

      • Go To  5

      No 

      • Repair the (X201) Left Front Door Speaker (+) circuit for an open.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  5. CHECK THE (X291) LEFT FRONT DOOR SPEAKER (-) CIRCUIT FOR AN OPEN 
    1. Measure the resistance of the (X291) Left Front Door Speaker (-) circuit between the ETM C1 harness connector and the Left Front Door Speaker harness connector.

      Is the resistance below 3.0 Ohms?

      Yes 

      • Go To  6

      No 

      • Repair the (X291) Left Front Door Speaker (-) circuit for an open.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  6. CHECK RELATED HARNESS CONNECTIONS 
    1. Disconnect all ETM 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 Radio 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 ETM DTCs.

      Did the DTC return?

      Yes 

      • Replace the ETM in accordance with the Service information.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

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