11 Aftertreatment Maintenance 11 Aftertreatment Maintenance A high amount of black smoke emitting from the vehicle or illumination of the Amber Warning Lamp or Red Stop Lamp are indications of a system problem. Should this occur, consult your local Detroit™ Service Center. Illumination of the Malfunction Indicator Lamp (MIL) Lamp indicates a failure of an emissions control device. The MIL may illuminate along with other ATS warning lamps. Call for service to repair the fault. 24 All information subject to change without notice. Copyright © 2019 DETROIT DIESEL CORPORATION DDC-SVC-MAN-0207