If you find that your blower motor is pulsing or randomly coming on after your vehicle is turned off, this may be your answer. If your blower motor is on full all the time, this fix may not work as the semiconductors may be shorted at this point. Remove the FSR from your vehicle. Carefully remove the potting material in the corner shown. Go slowly because you don't want to damage the circuit board below. The potting material is soft so this process is relatively easy. You will see two sets of three legs when you have successfully removed this material. To see the board and these pins easier, you may want to put some contact cleaner on the end of a Q-Tip and wipe the board to remove access "small bits" of loose potting material. In most cases, the solder will be broken around these pins connecting to the circuit board causing irratic operation, "blower motor doing it's own thing." Carefully resolder these pins. Make sure you don't bridge any pins with solder. If you do bridge the pins, remove the access solder and try again. Run a small jewelers screw driver between the pins to make sure there are no solder bridges. Once this is done, you are ready to try it. You can see my FSR below. This is what I have done and it now works great. You will see some larger solder connections, I have done this to prevent future problems.
"IF YOU DO THIS PROCESS, YOU ARE DOING IT AT YOUR OWN RISK."
IF YOU DO NOT FEEL CONFIDENT DOING THIS PROCESS, "DON'T DO IT!"
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08-31-2010, 11:28 PM
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