Independent Shops | mines a fault exists and the check engine light (CEL)/malfunction indicator light (MIL) is illuminated or the engine is de-rated. Th ere are many components to emissions performance and monitoring systems. To keep these systems operating, periodic maintenance is required that makes them susceptible to unintentional tampering. Many of these components are also exposed, making them susceptible to damage and willful tampering. Th ere are several methods to detect unintentional outof compliance conditions. Among them: • Performing a walkaround inspection of the vehicle. • Checking for warning lamp illumination, selective catalyst reduction (SCR) inducement (engine de-rating) or a low volume of DEF. • Looking for third-party DPF defeat devices and/ or third-party sensors that could have been added in the exhaust control system. • Running a diagnostic check of OEM soft ware to review component calibrations and specific engine soft ware. Lower the Possibility To help reduce the risk of unintentional tampering: • Follow proper procedures as supplied by the OEM when making repairs. • Ensure inspection protocols include all visible parts of the emissions system and the specific area around components serviced to ensure sensors and harnesses are in working order, and all connectors are properly seated. • Check DEF volume, or level, to determine if levels are at the required reading. • Run the truck to see if the warning lamp illuminates, and follow up with a test drive to look for fault codes and additional warning lamp engagement. RP 1610 also addresses intentional tampering situations, tampering identifi - cation guidelines and policy development and communication of emissions practices in the service provider environment. It is just one of more than 400 RPs created by TMC for the purpose of improving maintenance effi ciency and providing the industry with trucking solutions. Kenneth Calhoun is vice president of customer relations for Truck Centers of Arkansas (www.truckcentersar.com), a full-service dealership headquartered in North Little Rock, Ark. He serves as a service provider director at large on TMC’s board of directors and is the immediate past chairman of TMC’s S.16 Service Provider Study Group. TMC is the premier technical society for equipment technology and maintenance professionals. VehicleServicePros.com/10122984
FleetMaintenance_August_2016
To see the actual publication please follow the link above