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normally fuse controlled but remember that inside the heater bopx are 3 resistors that alter fan speed when you change the knob position on the dash. They do burn out and have to be replace to make the fan work
Does it work on any speed..If not check the relay..If it works on high only,,its the fan resister..If all fails you have to unhook the the fan wire and check for voltage with a test light or multimeter..If you have voltage then the motor is bad
the cooling fan sensor could have went bad and that could be why the fan isnt turning on, if the fan isnt coming on that is definitly the issue of overheating that you will need to address. The fan has a sensor which tells it at a set degree when to turn on anothe possibility is the fan motor itself has went bad. Hope this helps.
HOT WIRE COOLING FAN USING JUMPER WIRES TO BATTERY.IF FAN DONT RUN WHEN HOT WIRED FAN MOTOR BAD NEED REPLACING. IF FAN RUN WHEN HOT WIRED. CHECK COOLING FAN FUSE AND RELAY.IF ALL IS GOOD.YOUR ENGINE COOLANT TEMPERATURE SENSOR NOT WORKING.IT CONTROL COOLING FAN AT SET TEMPERATURE IF SENSOR OPEN OR FAULTY THE COOLING FAN WONT TURN ON.CHECK COOLING FAN WIRES FOR DAMAGE.IF ALL STILL CHECK OUT GOOD HAVE VECHICLE SCANNED FOR PCM FAULT.IF IT FAILS NO COOLING FAN WONT TURN ON.
Hello, Im Ron . Im going to Try to Help you Here. First the Cooling Fan. The Cooling Fan has A Micro-Relay # 37 In the Fuse/Relay Box UNDER_-HOOD IN this type Circuit You Have 3 Step Process to Control the Fan, 1 is the Temperature Sensor, 2 Is the Relay, 3 is the Fan. When Engine Gets Up to Operating temp. 220 Degrees the Sensor Grounds out & signals ECM of Engine
Temp and ECM Tickles the Relay to Turn ON the Fan.
In your Case I would RULE OUT Poor + Terminal Connections @ Battery Accessory Cables. AND Poor - Terminal @ Battery & Or Body Ground
THEN Test the Fan By BYPASSING to it With a Test wire With A + wire to the + side of Fan this is to Make Sure it Works .
Some Techs. Replace Sensor and Relay as A Pair Sense the Two are Fairly Inexpensive, but usualy you can Hear & or Feel the Relay "CLICK" If None Replace it. Shift Lock, Theres A Soliniod at Shifter that Unlocks ti WHEN you Apply the BRAKE, it is Controled By the Brakelight Switch.
I Strongly Suggest That you Check All Harness's From Battery to Interior, & Fuse Box.
I Know this seems Wild But With Limited Resorces & Lititure to work from this Is Where I Go.