Diagnostic System Check - Engine Controls (Alternative Fuels): Notes
NOTE:
Check for applicable Technical Service Bulletins (TSB) before proceeding. DO NOT perform the following procedure if driveability conditions are not present. DO NOT turn ignition OFF during the following procedure or clear DTCs unless instructed to do so.
NOTE:
Ensure the battery is fully charged and the cables are clean and tight. Ensure the PCM and the Fuel Injector Control Module (FICM) grounds are clean, tight, and in the proper location. Ensure the CNG and the gasoline fuel tanks are at least 1/2 full.