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Home >> Fiat >> 2014 >> 500e >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> On-Board-Charging Module (OBCM) - Electrical Diagnostics - 500E >> Diagnosis And Testing >> P0CF3-Control Pilot Circuit-Open >> Diagnostic Test

Diagnostic Test

  1. DTC IS ACTIVE 
    1. Turn Ignition to on Position.
    2. With the scan tool, select View DTCs.

      Is the status Active for this DTC?

      Yes 

      • Go To  2

      No 

      • Perform the INTERMITTENT CONDITION diagnostic procedure in accordance with the service information. Refer to STANDARD PROCEDURE .
  2. CHECK THE CONTROL PILOT CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Measure the resistance of the Control Pilot circuit between the OBCM Charge Port harness connector and the Charge Port Inlet connector located in the Fuel Door Opening.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  3

      No 

      • Replace the Charge Port harness in accordance with the service information.
      • Perform the EVCU VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  3. CHECK EVSE CHARGING CAPABILITY 
    1. Reconnect the OBCM Charge Port harness connector.
    2. Connect the customers EVSE charging unit to the vehicle. Using a Scan Tool, Monitor the AC output.

      Is the EVSE charging unit operating correctly?

      Yes 

      • Advise the customer that the problem may be with their power source connection for the EVSE charging unit.
      • Perform the EVCU VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  4
  4. CHECK EVSE CHARGING UNIT 
    1. Refer to the EVSE User manual information and follow the troubleshooting guide to determine if the problem is with the EVSE charging unit or the vehicle.
    2. Using a Scan Tool, Monitor the AC output.

      Is the EVSE charging unit operating correctly?

      Yes 

      • Go To  5

      No 

      • Replace the EVSE charging unit in accordance with the service information.
      • Perform the EVCU VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  5. ON-BOARD CHARGING MODULE 
    1. Using the wiring diagram/schematic as a guide, inspect the connectors at the Charge Port connector and the On-Board Charging Module (OBCM).
    2. Look for broken, bent, pushed out or corroded terminals.
    3. Perform any Technical Service Bulletins that may apply.

      Were any problems found?

      Yes 

      No