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Old 03-25-2021, 09:59 AM   #2
Bill Murray
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Bill Murray is a jewel in the roughBill Murray is a jewel in the roughBill Murray is a jewel in the roughBill Murray is a jewel in the rough
 
Join Date: Apr 2000
Location: Speedway, Indiana
Posts: 2,149
 

2007 ION-2 Quad Coupe
1997 SC1
Default Re: 2003 Saturn Ion....No Fresh Air

I believe there's a flapper door that switches between recirc and outside.

I've done troubleshooting on this problem in my old S10 pickup that used vacuum actuators, but I think the Ion uses an electrical force motor to move the flap.

So there's three possible failure modes

Electrical not getting to the actuator
Actuator is failed
Actuator is disconnected / door jammed
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