Dongfeng 3615010-KJ1QA Aftertreatment ECU Assembly

The 3615010-KJ1QA is an electronic control unit (ECU) assembly designed for aftertreatment system management on Dongfeng heavy-duty commercial vehicles. It processes signals from NOx sensors, temperature sensors, and DEF dosing valves to ensure compliance with China VI / Euro VI emission standards. The unit operates on a 24V DC electrical system typical for heavy-duty truck platforms. The housing is sealed against moisture, vibration, and thermal cycling encountered in under-chassis or frame-rail mounting locations. The connector interface follows Dongfeng standard pin-out for CAN bus communication with the engine ECU and vehicle body controller. This assembly replaces OE part numbers 3615010-KJ1QB, 3615010-KJ1Q1, and 3615010-T25fd. It is calibrated for engine platforms including Cummins ISLe, ISDe, C Series, L Series, and Dongfeng Renault DCi11 and DDi series diesel engines. Application covers Dongfeng Tianlong Flagship, Tianlong, Tianjin, and Dali Shen truck models in 8x4 and 6x4 configurations.