sp3499

my matrix 03 have a problem with the fan switch it only runs on the 3 rd and 4 th speed.the first 2 positions dont work is it the switch or the motor thanks

cmhj2000

Probably the heater relay.

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sp3499

k thanks and were is the heater relay located and is it expensive

cmhj2000

Where? Should be by the blower. You'll have to look a bit or get a shop manual, I've never pulled one on this model.

Expense is a matter of personal perception. You'll have to price one out as I've never done one of these but heater relays in general aren't IMO.

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inafogg

blower motor resistor not expensive should be located on or near blower
motor good luck