Diagnostic Test

WARNING: This page is about a different car, the 2014 Fiat 500e. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR ACTIVE DTC
NOTE:
Check to make sure the battery and charging system are operating properly. Battery and/or charging system problems may cause these DTCs to set.

NOTE:
Diagnose any related Powertrain DTC(s) before continuing.
1. Turn the ignition on.
2. With the scan tool, read DTCs.
  Does the scan tool display this DTC as active?
  
  Yes
  - Go To 2
  No
  - Test complete. The condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE (F20) IGNITION RUN-START CONTROL OUTPUT CIRCUIT FOR VOLTAGE
1. Turn the ignition off.
2. Disconnect the BCM C8 harness connector.
3. Turn the ignition on.
4. Measure the voltage between ground and the (F20) Ignition Run-Start Control Output circuit.
  Is the voltage above 10.0 volts?
  
  Yes
  - Replace the BCM in accordance with the Service Information. Refer to MODULE, BODY CONTROL, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 3
CHECK THE (F20) IGNITION RUN-START CONTROL OUTPUT CIRCUIT FOR AN OPEN
1. Disconnect the Ignition Switch C2 harness connector.
2. Measure the resistance of the (F20) Ignition Run/Start Control Output circuit between the Ignition Switch harness connector and the BCM C8 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Replace the Ignition Switch in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Repair the open in the (F20) Ignition Run/Start Output circuit.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .