ac/heater control board

2000 JEEP GRAND CHEROKEE
130,000 MILES • 4.0L • 6 CYL • 4WD • AUTOMATIC
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NRUXS05
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  • 5 POSTS
i had a problem a while ago but got a temp fix and i use to jump the two connectors and the fan would come on but wouldnt shut off with the car so i added a toggle switch then one day it failed all together no power what so ever
Apr 5, 2016 at 7:35 AM
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HMAC300
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so what is question?
Apr 5, 2016 at 9:42 AM
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NRUXS05
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  • 5 POSTS
It doesnt work now what can be the problem
Apr 5, 2016 at 11:42 AM
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HMAC300
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check to see if the relay under hood is any good and check for a burnt wire harness because you jumped the wires
Apr 5, 2016 at 12:08 PM
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NRUXS05
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  • 5 POSTS
Fues relays all good harnesses arent burnt ????
Apr 5, 2016 at 1:05 PM
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NRUXS05
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  • 5 POSTS
Yes everything is ok i mean what other fuses are there and then there is supposply a inline blower motor relay and dont know where that is
Apr 5, 2016 at 1:51 PM
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HMAC300
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there is no relay for blower only a 40a fuse in power dist center by battery. if it still doesn't work after replacing fuse have it scanned for codes it may be a body module or heater module issue. also if it works on high but nothing else check blower resistor by blower.
Apr 5, 2016 at 3:05 PM
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NRUXS05
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Doesnt work at all even with manual temp control it can give codes
Apr 5, 2016 at 4:21 PM
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HMAC300
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fuse 20 on inside fuse panel supplies power if that fuse is good see if the whtk/pink wire leading to control panel has power if it does then your control head or body module have been damaged from you jumping the power to make blower work. you can check the lt grn and lt blu wires coming out for speeds 1&2 if using a test light you will have to use the positive side to act as ground on those circuits
Apr 5, 2016 at 4:39 PM