Operators Manual

Table Of Contents
DEF Post-Run Indicator Lamp
EPA10 DEF Post-Run Indicator Lamp
An indicator system is required on EPA10 vehicles equipped with a Negative
Battery Disconnect switch. The Post-Run Indicator lamp is controlled by the
Aftertreatment Control Module (ACM) and the Aftertreatment System (ATS). The
Post-Run Indicator lamp is located on the negative battery disconnect switch. If the
ignition is switched off while the ATS is at an elevated temperature, the ACM
activates the Post-Run cycle to cool the Diesel Exhaust Fluid (DEF) doser. The
Post-Run cycle will be interrupted if the Negative Battery Disconnect is switched
off. The lamp will illuminate if a Post-Run cycle is in progress, which informs the
operator to delay the Negative Battery Disconnect until the Post-Run Lamp is off,
except in an emergency situation.
DEF Post-Run Indicator Lamp
114 All information subject to change without notice.
Copyright © 2022 DETROIT DIESEL CORPORATION DDC-SVC-MAN-0189