EGR Control Inspection

EGR CONTROL INSPECTION
1. Connect the Special Service Tools (SST)s New Generation Star (NGS) tester to the data link connector-2.
2. Start the engine and let it idle.




3. Select the SIMULATION TEST function on the NGS display.
4. Increase the duty value of EGR solenoid valve (vacuum) from 0% to 100% by using the "EGRVAC". Operate the EGR solenoid valve (vacuum) and check if the engine speed becomes unstable or the engine stalls.
5. If the engine speed will not change, stop the engine and do as follows.
A. Turn the ignition switch to ON.
B. Verify that diagnostic trouble code No. P1485, P1486 is not displayed. If code No. P1485, P1486 is shown, carry out troubleshooting of the code No. P1485, P1486.
C. Increase the duty value of the EGR solenoid valve (vacuum) from 0% to 100% by using the "EGRVAC". Operate the EGR solenoid valve and check if operation sound of the valve is heard.
I. If the operation sound is heard, check the following.
^ Loose or damaged vacuum hose
^ EGR valve
^ EGR solenoid valve (vent)

II. If the operation sound is not heard, check the EGR solenoid valve (vacuum)