Fan does not work on heat or defrost

1995 JEEP CHEROKEE
220,000 MILES • 4.0L • 6 CYL • 4WD • AUTOMATIC
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JIM LEWIS2
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  • 1 POST
My heater only works on vent. if I put on heat or defrost the fan does not work, but I put it on vent or any other setting the fan works fine. I get heat from the vent setting but why will my fan not work on heat and defrost?
Dec 9, 2016 at 8:47 PM
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CARADIODOC
  • CERTIFIED EXPERT
  • 34,307 POSTS
Pull the fan switch / heater control assembly out and inspect the connector and switch for blackened terminals. If you see that, try to post a photo and I will describe how I repair those.
Dec 9, 2016 at 9:10 PM