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Home >> Fiat >> 2017 >> 500 Pop, Standard Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> (Entertainment TELEMATIC Module (ETM) - Electrical Diagnostics - 500 - Except Electric) >> DTC Troubleshooting >> B1400-1A Front Left Audio Speaker Output Circuit Resistance Below Threshold - Base >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR AN ACTIVE DTC 
    NOTE:

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

    1. Turn the ignition on.
    2. Using the scan tool, record and erase the Entertainment Telematic Module (ETM/LTM) DTCs.
    3. Turn the ETM on.
    4. Adjust the speakers to the front and center.
    5. Using the scan tool, read ETM DTCs.

      Is the DTC 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.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  2. CHECK THE LEFT FRONT SPEAKERS 
    1. Using the scan tool, erase the DTCs.
    2. Turn the ignition off.
    3. Disconnect the Left Front Door Speaker harness connector from the Left Front Door Speaker.
    4. Disconnect the Left Front Tweeter Speaker harness connector from the left Front Tweeter Speaker.
    5. Turn the ignition on.
    6. Turn the radio on.
    7. Using the scan tool, read ETM DTCs.

      Is the DTC active?

      Yes 

      • Go To  4

      No 

      • Go To  3
  3. CHECK THE LEFT FRONT TWEETER SPEAKER 
    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. Re-connect the Left Front Door Speaker harness connector to the Left Front Door Speaker.
    5. Turn the ignition on.
    6. Turn the radio on.
    7. Using the scan tool, read the active ETM DTCs.

      Is the DTC active?

      Yes 

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

      No 

      • Replace the Left Front Tweeter Speaker in accordance with the service information.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  4. CHECK THE (X201) LEFT FRONT SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND 
    1. Turn the ignition off.
    2. Disconnect the ETM C1 harness connector.
    3. Measure the resistance between ground and the (X201) Left Front Speaker (+) circuit

      Is the resistance below 3.0 Ohms?

      Yes 

      • Repair the (X201) Left Front Speaker (+) circuit for a short to ground.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

      • Go To  5
  5. CHECK THE (X291) LEFT FRONT SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND 
    1. Measure the resistance between ground and the (X291) Left Front Speaker (-) circuit.

      Is the resistance below 3.0 Ohms?

      Yes 

      • Repair the (X291) Left Front Speaker (-) circuit for a short to ground.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

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