Diagnostic Test

VERIFY DTC IS ACTIVE
NOTE: Make sure the IOD fuse is installed and battery voltage is between 10 Volts and 16 Volts before proceeding.
1. With the scan tool, read DTCs.
  Is this DTC active?
  
  Yes
  - Go to 2
  No
  - Perform the Stored Lost Communication diagnostic procedure. Refer to Non-DTC Diagnostics/Communication - Diagnosis and Testing .
CHECK FOR ANY OF THE FOLLOWING ACTIVE DTCS
1. With the scan tool, read all active DTCs from all modules.
  NOTE: Check for FCM configuration, CAN B or C hardware electrical, VIN Missing/Mismatch, battery or ignition related DTCs.
  
  Does the scan tool display any active DTCs to the conditions listed above?
  
  Yes
  - Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Diagnosis and Testing and perform the U0101-Lost Communication with TCM diagnostic procedure.
  - Perform BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure
  No
  - Go to 3
VERIFY THAT THE TCM IS ACTIVE ON THE BUS
1. Ignition on, engine not running.
2. With the scan tool, select Network Diagnostics.
3. Verify that the TCM is active on the bus.
  Is the TCM active on the bus?
  
  Yes
  - Go to 4
  No
  - Refer to Non-DTC Diagnostics/Communication - Diagnosis and Testing for No Response diagnostic procedures.
CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCS
1. With the scan tool, select Network Diagnostics.
  Is there more than one module with active DTCs Logged Against the TCM?
  
  Yes
  - Replace/update the TCM in accordance with the Service Information.
  - Perform BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
  No
  - Replace/update the module that set this DTC in accordance with the service information.
  - Perform BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .