In figure 1, a diagram of the Foton Aumark ISF3.8 CM2220 electronic engine control system without SCR from 2010

In figure 2, a diagram of the Foton Aumark ISF3.8 CM2220 electronic engine control system without SCR from 2010

In figure 3, a diagram of the Foton Aumark ISF3.8 CM2220 electronic engine control system with SCR from 2010

In figure 4, a diagram of the Foton Aumark ISF3.8 CM2220 electronic engine control system with SCR from 2010 (continued 1)

In figure 5, a diagram of the Foton Aumark ISF3.8 CM2220 electronic engine control system with SCR from 2010 (continued 2)