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.

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 BCM (BODY CONTROL MODULE) diagnostic procedure. Refer to DIAGNOSIS AND TESTING .
VERIFY THAT THE BODY CONTROL MODULE (BCM) IS ACTIVE ON THE BUS
1. Using the scan tool, select Network Diagnostics.
2. Verify that the BCM is active on the bus.
  Is the BCM active on the bus?
  
  Yes
  - Go To 3
  No
  - Perform the NO RESPONSE FROM BCM (BODY CONTROL MODULE) diagnostic procedure. Refer to DIAGNOSIS AND TESTING .
ANTI-LOCK BRAKE SYSTEM (ABS) MODULE
WARNING:
To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS). Refer to RESTRAINTS - SERVICE INFORMATION before attempting any steering wheel, steering column, airbag, seat belt tensioner, impact sensor, or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to take the proper precautions could result in accidental airbag deployment.
1. Turn the ignition off.
2. Replace the Anti-Lock Brakes System (ABS) Module in accordance with the Service Information. Refer to MODULE, ANTI-LOCK BRAKE SYSTEM, REMOVAL .
3. Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
4. Turn the ignition on.
5. Using the scan tool, read ABS DTCs.
  Does the DTC remain active?
  
  Yes
  - Replace the Body Control Module (BCM) in accordance with service information. Refer to MODULE, BODY CONTROL, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Test complete.