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Home >> Fiat >> 2016 >> 500 Turbo, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 ((Regenerative Brake Controller (RBC) - Electrical Diagnostics - 500 - Electric)) >> DTC Troubleshooting >> U1486-00-Implausible Data Received From Power Inverter Module >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different variant/trim than selected.
  1. VERIFY THE DTC IS ACTIVE 
    NOTE:

    This DTC must be active for the results of this test to be valid.

    1. Perform any Technical Service Bulletins (TSBs) that may apply.
    2. Turn the ignition on.
    3. With the scan tool, record and erase DTCs.
    4. Cycle the ignition switch from off to on.
    5. With the scan tool, read DTCs.

      Is the DTC active at this time?

      Yes 

      • Go To  2

      No 

      • Go To  3
  2. POWER INVERTER MODULE (PIM) COMMUNICATION DTCS PRESENT 
    1. With the scan tool, view ALL DTCs.

      Are there any PIM Communication DTCs present in other Modules?

      Yes 

      • Using the schematics as a guide, check the Power Inverter Module (PIM) pins, terminals, and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the Power Inverter Module (PIM) in accordance with the Service Information.

      No 

      • Using the schematics as a guide, check the RBC pins, terminals, and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the Regenerative Brake Controller (RBC) in accordance with the Service Information.
      • Perform the RBC VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  3. INTERMITTENT WIRING AND CONNECTORS 
    1. Using the wiring diagram/schematic as a guide, inspect the wiring harness and connectors.
    2. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit.
    3. Look for the data to change or for the DTC to reset during the wiggle test.
    4. While monitoring the scan tool data relative to this circuit, move the selector switch to each position several times.
    5. Look for the data to change other than as expected or for the DTC to reset.

      Were any problems found?

      Yes 

      No 

      • Test complete, the condition or conditions that originally set this DTC are not present at this time.
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