Thermal Vacuum Valve: Testing and Inspection

EGR Two-Way Valve, Checking

Test conditions
- Engine oil temperature 50 °C minimum

Test sequence
- Switch on ignition





- Disconnect vacuum hose -5- from EGR two-way valve -1- N161
- Disconnect vacuum hose -3- from EGR two-way valve and blow into hose
- The EGR two way valve must allow air to pass to the vacuum pump connection (flow not blocked)
- Disconnect 2 pin harness connector -2- from EGR two-way valve -1-
- Blow again into vacuum hose -3-
- The vacuum connection to the vacuum pump must be closed and the outlet to the outside -arrow- open