Expert: Chris Fortunato - 4/8/2007

Question
We have a 2001 sebring convertible that the fan control only works on high speed.  How can I repair it?  How you you get the panel apart to repair?

Answer
Most times, the repair for this situation is not in the control head assembly. You can test for voltage down at the blower resistor block (directed from the fan control switch), that normally resides next to the blower motor, underneath the right hand side of the dash. You can locate it by looking under the dash for the blower motor while it's running. The resistor block is usually right next to it -- the connector has anywhere from 4-6 wires in it. You could measure voltage at each wire, and manipulate the control switch to make sure each wire gets voltage when it should.

You can also measure resistance across the resistors in block itself. Depending on the system, the readings will be between .4 and 2.3 ohms. You can even take it out and inspect it for obvious failure. Regardless, this is a relatively inexpensive part (unless it's a blower module -- for automatic A/C systems), often under $35. Good luck!