Engine Code 1Z

Special Tools, Testers And Auxiliary Items:
- US8026 Hand vacuum pump

Test Sequence:
- Disconnect vacuum nose from EGR valve.
- Connect US8O26 hand vacuum pump to EGR valve.





- Operate vacuum pump.
The diaphragm rod must move toward vacuum connection. Observe diaphragm rod via opening (arrow)
- Disconnect US8026 hand vacuum pump from EGR valve.
Valve must audibly close (diaphragm rod moves toward intake manifold)