Diagnostic Test

CHECK FOR AN ACTIVE DTC
NOTE:
For vehicle communication problems, use the scan tool to refer to the Network Review Screen. The screen depicts a high level view of the vehicle network. Faults and problem areas appear in red. Selecting any of the network components allows access to the source of the problem.
1. Ignition on, engine not running.
2. With a scan tool, select View PCM DTCs.
  Is the status Active for this DTC?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
CHECK FOR LOST COMMUNICATION OR MISSING MESSAGES WITH OTHER MODULES
1. With the scan tool, View the Network Review Screen.
  Are any other modules reporting lost communication or missing messages against the Powertrain Control Module?
  
  Yes
  - Replace and program the Powertrain Control Module (PCM) in accordance with the service information. Refer to MODULE, POWERTRAIN CONTROL (PCM), REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Replace the Body Control Module (BCM) in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .