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.

CHECK BATTERY SYSTEM VOLTAGE
1. Inspect and test the Battery with the Midtronics Battery Tester or equivalent for a shorted or dead cell before continuing with this test.
  NOTE:
  This DTC can set if excessive high or low battery system voltage has occurred during programming.
  
  Did the battery pass testing?
  
  Yes
  - Go To 2
  No
  - Replace the Battery in accordance with the Service Information.
    Refer to BATTERY, REMOVAL BATTERY, REMOVAL .
  - With the scan tool, program the Secret Key information into the PCM using the MODULE PROGRAMMING procedure. Refer to PROGRAM THE PCM (POWERTRAIN CONTROL MODULE) .
NO COMMUNICATION WITH BODY CONTROL MODULE (BCM)
1. With the scan tool, attempt to communicate with the BCM.
  Can the scan tool communicate with the BCM?
  
  Yes
  - Go To 3
  No
  - Refer to NO RESPONSE FROM BCM (BODY CONTROL MODULE) and perform the No Response from BCM diagnostic procedure.
PROGRAMMING SECRET KEY INTO THE PCM
1. Turn the ignition on.
2. With the scan tool, erase DTCs.
3. Cycle the ignition key two times.
  NOTE:
  The secret key code should transfer automatically when the ignition is cycled on.
4. Attempt to start the engine.
  NOTE:
  If the engine will not start, crank the engine over for 15 seconds. Crank at least two (2) times with the ignition switch returning to the off position each time.
5. With the scan tool, read DTCs.
  Does the DTC return?
  
  Yes
  - Replace and program the Powertrain Control Module in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL and PROGRAM THE PCM (POWERTRAIN CONTROL MODULE) .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST, 16V .
  No
  - The Secret Key information has been successfully programmed into the PCM. Test is complete.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST, 16V .