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Have a 2001 Mitsubishi galant. Fans aren't comming on. Have…

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Have a 2001 Mitsubishi galant...
Have a 2001 Mitsubishi galant. Fans aren't comming on. Have replaced temp switch thermostat hoses water pump hot wired both fans to see if they work and they do. Replaced relay. Took back to shop they did pressure test and came back fine.... I flushed system replaced all hoses the car doesn't run hot. But fans don't kick on so it starts to smoke from radiator
Submitted: 2 years ago.Category: Mitsubishi
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Answered in 13 minutes by:
2/16/2016
Mitsubishi Mechanic: Don - Mo Lurch, Mitsubishi Mechanic replied 2 years ago
Don - Mo Lurch
Don - Mo Lurch, Mitsubishi Mechanic
Category: Mitsubishi
Satisfied Customers: 21,385
Experience: 16 years, Line Mechanic, Electronics trouble shooting, etc
Verified

if the engine coolant temperature reaches 230°F or higher , the radiator fan control activates the radiator fan for up to 5 minutes even after the ignition switch is turned to the "LOCK (OFF)" position

The fan stops its rotation when the engine coolant temperature decreases to 230°F or lower .

The PCM supplies a Ground to the Fan Controller thru the BLUE / ORANGE wire
The Fan Controller get Voltage from the Relay on the BLUE wire & Ground - on the BLACK wire
You need to test those wires to see if it is the PCM or the Fan Controller
The Fan Controller is mounted on the Fan
click Attachment below

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Customer reply replied 2 years ago
I have tested fuse box I get 12 volts and wire harness from the temp sensor and I get the 5 volts..
Customer reply replied 2 years ago
Also we put new condenser fan in thinking the model was bad... still no luck
Mitsubishi Mechanic: Don - Mo Lurch, Mitsubishi Mechanic replied 2 years ago

I have tested fuse box I get 12 volts and wire harness from the temp sensor and I get the 5 volts..
????

Please reread my response.....
Testing needs to be done at the Fan Controller on the wires I posted
You have not mentioned if you have replaced the Fan Controller or tested Ground & Voltage to the Relay

.

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Customer reply replied 2 years ago
Ok... well I checked ground and voltage on the relay and box. That's where the 13 volts came from when ignition switch turned on.... I will check the module but I replaced the one already that came with the newer fan I got from the salvage yard.. ..
Customer reply replied 2 years ago
12 volts not 13
Mitsubishi Mechanic: Don - Mo Lurch, Mitsubishi Mechanic replied 2 years ago

If you follow the Schematic to the Fan Module, the PCM supplies the Ground to the Fan Control Module BLUE / ORANGE wire.
The BLUE wire of the Fan Control Module should have Voltage +
IF they do, then the Fan "2" wires should have Ground & Voltage +
IF the Fan Control Module has the BLUE / ORANGE (-) & BLUE (+) & no Output (-) & (+) to Fan, then the Control Module is bad

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