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Home >> Fiat >> 2013 >> 500e >> Repair and Diagnosis >> Engine Performance >> System >> Electric Vehicle Control Unit (EVCU) Module - Pre-Diagnostic Troubleshooting Procedure, Verification Test & Intermittent Condition - 500E >> Standard Procedure >> EVCU Pre-Diagnostic Troubleshooting Procedure >> Diagnostic Test

Diagnostic Test

  1. NO RESPONSE 
    1. Make sure the scan tool will communicate with the appropriate modules.

      Are you currently experiencing a NO RESPONSE condition?

      Yes 

      • The NO RESPONSE condition must be properly diagnosed before continuing. Refer to DIAGNOSIS AND TESTING .

      No 

      • Go To  2
  2. VEHICLE HISTORY AND TSBs 
    1. Continue by reading EVCU DTCs and record the related Freeze Frame data if any DTCs are present.
    2. Whether or not any DTCs are present you will want to check the following items which may assist in repairing the customers complaint successfully.
    3. Check the vehicle's repair history.
    4. If the vehicle has a repair history that pertains to the customer's current complaint, review the repair.
    5. Inspect the vehicle for any aftermarket accessories that may have been installed incorrectly.
    6. Check for any TSBs related to the customer's complaint or DTCs.
    7. If a TSB applies, follow the instructions per the TSB.

      Choose the following scenario that best applies.

      The TSB repaired the customer's complaint. 

      • Testing complete.

      A DTC is present, no TSB applies, or the TSB didn't repair the customer's complaint. 

      • Go To  3

      No DTCs are present. 

  3. WIRE HARNESS INSPECTION 
    1. Clear the DTCs.
    2. Attempt to duplicate the customer complaint.
    3. Whether the customer complaint can be duplicated or not, make a quick wire harness inspection related to the DTCs that were previously cleared.
    4. Check the Electric Vehicle Control Unit (EVCU) connectors, the suspected component connection, in-line connectors, wire harness splices, EVCU power and ground circuits, and any related fuses.

      Were any repairs made that fixed the customer's complaint?

      Yes 

      • Testing complete.

      No 

      • Perform the diagnostic test procedure related to the DTC. Refer to the DTC INDEX - 500E .