Cannot Be Shut Off

Fresh Air Cannot Be Shut OFF






1 - Fresh air/recirculation flap
2 - Fresh air/recirculation flap vacuum servo

- start engine
- vacuum being produced

- adjust fresh air blower switch to position "0" (off)
- fresh air/recirculation vacuum servo 2 must actuate/retract (vacuum applied)
- fresh air/recirculation flap 1 must close to outside air

If NO
- check fresh air/recirculation flap two-way valve N63 according to wiring diagram
- check vacuum hose layout and connections, Vacuum and Vapor Hose Diagrams

Note: The position of the temperature control knob and air flow distribution knob will not affect fresh air flow.