Diagnostic Test

WARNING: This page is about a different car, the 2015 Fiat 500. However, it is still accessible from the selected car via links, so may be relevant.

VERIFY THE DTC IS ACTIVE
1. Turn the ignition on.
2. Using the scan tool, read ABS DTCs.
  Is the DTC active at this time?
  
  Yes
  - Go To 2
  No
  - Perform the NO RESPONSE FROM EVCU (ELECTRIC VEHICLE CONTROL UNIT) diagnostic procedure. Refer to NO RESPONSE FROM EVCU (ELECTRIC VEHICLE CONTROL UNIT) .
VERIFY THAT THE ELECTRIC VEHICLE CONTROL UNIT (EVCU) IS ACTIVE ON THE BUS
1. Using the scan tool, select Network Diagnostics.
2. Verify that the EVCU is active on the bus.
  Is the EVCU active on the bus?
  
  Yes
  - Go To 3
  No
  - Perform the NO RESPONSE FROM EVCU (ELECTRIC VEHICLE CONTROL UNIT) diagnostic procedure. Refer to NO RESPONSE FROM EVCU (ELECTRIC VEHICLE CONTROL UNIT) .
REGENERATIVE BRAKE CONTROLLER (RBC)
1. Turn the ignition off.
2. Replace the Regenerative Brake Controller (RBC) in accordance with service information. Refer to CONTROLLER, REGENERATIVE BRAKE (RBC), REMOVAL .
3. Perform the RBC VERIFICATION TEST. Refer to RBC VERIFICATION TEST .
4. Turn the ignition on.
5. Using the scan tool, read ABS DTCs.
  Does the DTC remain active?
  
  Yes
  - Replace the Electric Vehicle Control Unit (EVCU) in accordance with service information. Refer to UNIT, ELECTRIC VEHICLE CONTROL (EVCU), REMOVAL .
  - Perform the EVCU VERIFICATION TEST. Refer to EVCU VERIFICATION TEST .
  No
  - Test complete.