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Pull the plastic Module plug apart ,Figure out witch is the hot wire to the fan, End the ground wire ,Use a jumper wire to ground it to the body of the car Some where like a bolt going into the body or the engine some where, Take anouther jumper wire end hook it up to the hot wire on the fan .Touch it to the positive terminal on the battery to check if the fan comes on, If it doesn,t the fan motor is shot. They don,t last for ever,
have you checked to see if the cooling fan is working properly.if not then it will have to be checked to see if its the fan that is no good,wiring,or a relay.there are 2 temp sensors one for the gage/light and one for the computer to know what the engine temp is to alter engine controls and cooling fan operation.
there are 4 steps to check and you've mentioned all but one the relay which cuts the fan on'off. At an elec shop you check in this order power to fuse block, fuse & output side, temp sensor, relay, and fan motors. Get a new relay
Best thing to check is the socket for the fan relay. Find the cooling fan relay in the engine compartment relay box and pull out the relay to interrogate the socket. Use a test light to see if the car is trying to turn on the fan. See my post at http://www.fixya.com/cars/r6022358-relay_check on how to check the relay and socket. The car must be running and hot for this test. If the car is not hot, you can at least test the fan by jumping the relay. Please let me know if you have questions.
first check if the motor is bad.We ran a hot wire from hot to hot on battery.The fan kicked on.Ours was an inline fuse so ran wire from the positive wire on fan to a wire (hot) to key switch.This way you turn on the key and fan comes on
Their is a sensor screwed into the radiator which sends a signal to the fan relay when the radiator gets hot and activates the fan. If you changed the relay then this is most likely the problem. But it may be the fan. To check remove the plug from the fan and when radiator get's hot check if power is comming through the wire's.
Hello dc8jimmy...did you check the voltage to the fans? The Aztek is a known overheater...Run a diagnostic scan to see if you have a cooling fan relay circuit open short. Will be easier to correct the problem when you know where to look. I think Haynes has a publication on the Aztek that covers the 01-05 year models. Good luck...i hope this helps.
Sorry - which ones? A/C heating or engine cooling fans?
Check fuses to make sure they're still ok. Remove the ones for the fans - and replace to clear any corrosion off them.
If it's the cooling fans at the front, these are controlled by a temperature switch which may be faulty.
Locate it , and measure the conductivity between contacts when cold - and when engine is very hot. The switch should close at around 90 degrees - 3/4 of the temperature gauge.
If the switch is ok, the relays controlling the fans are probably corroded.
Sometimes mounted on the fan housing - follow the fan motor wiring directly to them.