ELECTRICAL SYSTEM MLC300 SERVICE/MAINTENANCE MANUAL
3-6
Published 11-22-17, Control # 257-02
Relay Description Relay Description
K1 Starter Motor Relay (not shown) K8 Diesel Exhaust Fluid (DEF) Hose Heater (Cummins)
K3 ECM Bus (time delay) K9 Not Used
K4 ECM Bus K12 Diesel Exhaust Fluid (DEF) Hose Heater (Cummins)
K5 Ignition Bus (time delay) K13 Diesel Exhaust Fluid (DEF) Hose Heater (Cummins)
K6 Crane Bus K14 DEF Supply Module (Cummins)
K7 ECM Key (start)