Applies to: Engine 541 in model 930, 932, 933, 934 with code MS4 (BlueTec 4 (Euro IV)) with code MS5 (BlueTec 5) except code MS3 (Engine version EURO 3) Wiring diagram 1 Engine 542 in model 930, 932, 934 with code MS4 (BlueTec 4 (Euro IV)) with code MS5 (BlueTec 5) except code MS3 (Engine version EURO 3) Wiring diagram 1