evap system ?

The EGR is a 5 wire electrically controlled valve the best way to test it is with a professional grade scan tool with bi-directional controls it actuates the EGR and then sensor data is read of the scan tool. There is not much you can do to test evap systems without a scan tool that can operate the solenoids to close the system and a scan tool to watch system vacuum decay. Many automotive repair shops have a machine that generates an inert non flammable low pressure smoke that looks similar to cigar smoke to look for larger vacuum leaks in the evap emission system.