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Need a cooling fan wiring diagram - Legend Acura Cars & Trucks

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Turn the AC on, both fan should be working, if it doesn't run it needs replacement. If both fan run while the ac is on then they are good. Now turn off the AC. Idle the car. When temp reaches about passed halfway at least one fan should turn on. If none of them turns on then there is a bad fan switch ( it looks like a temperature sensor bolted on usually by the thermostat housing). Here is the procedure to test the fan switch: First remove it from the car, tie a string to it and dip it in hot water ( boiling or near boiling temperature). You would notice a click as the contact switch closes inside. Sometimes you will not hear a click but to make sure measure that pins with a continuity tester.

Posted on May 28, 2011

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They should print what you need from
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May want a couple dollars,
get anything you can think of if
they seem helpful

Posted on May 28, 2011

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Posted on Jan 02, 2017

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SOURCE: wiring

pls send me your car chasis number to send the wiring diagram

Posted on Jun 06, 2009

  • 184 Answers

SOURCE: cooling fan works when hot wired relay checks out

Your fan thermostat is bad. It is probably mounted to the radiator.
Good luck.

Posted on Mar 29, 2010

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1995 Lt1 Camaro cooling fans operate like this; Cooling fans (2 fans) come on 30 seconds after start up on high, stay on while driving, and turn off when brakes are applied. Stock car, no mods.


Did you have it checked for DTC'S - diagnostic trouble codes ? The cooling fans are controlled by the PCM - engine computer , with the use of three relays ,located in the under hood electrical center . Do you know how to do electrical testing ?
Relay Driven Dual Cooling Fan Diagnostics Looking at wiring diagrams i don't see any connection between the brakes an cooling fans . Checking for DTC'S an doing electrical testing of control circuits from the PCM , Power circuits from the fuse / relay box . Checking grounds an pulling relays ,check for corrosion .

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View wiring diagrams here http://www.bbbind.com/free_tsb.html

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I'm in need of the engine bay wiring diagram for a 1980 Honda Prelude, specifically for the cooling system/thermo-fan.


Try jumping the green cooling fan switch with a wire and see if it turns on while the car is on, if it does then it's probably your module.

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Wiring for cooling system ford escort zetec 1996 1.6i


Wiring for cooling system ? You mean cooling fans ? 1.6 ? This vehicle has 1.8 L or 1.9 L . This cooling system has two electric cooling fans . Three relays , cooling fan power relay , cooling fan hi speed relay an the low speed cooling fan relay. The powertrain control module controls these relays. Go here http://bbbind.com/free_tsb.html free wiring diagrams .

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Where can I get a cooling fan wiring diagram?


The cooling fans should come with a sensor and tells fans to come on at certain temperature

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I am sorry but fixya has no wiring diagrams. Try this link. www.alldatadiy.com

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Not exactly sure as to wich fan relay you are talking about (cooling fan or the relay for the blower motor for the air conditioning) Kind of took a guess and went with the engine cooling fan relay. Below is a wiring diagram for that relay.If you need the other relay, a larger wiring diagram as this was the largest I could post on here or if you need pictures of the connectors as well. You can email me directly at csautomotivecars@att.net and I will be happy to email what you need back. Hope this helps....


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its in a 3 connection waterproof harness now ??????? Do you mean a 3 wire connector ? Three wire's - one black -ground , one is dark blue an the last is brown with a orange trace . He replaced the fan an it didn't fix the problem , imagine that ! Here is a web site for free wiring diagrams http://www.bbbind.com/free_tsb.html
Enter your vehicle info. year , make , model and engine size. Under system click on engine ,then under subsystem click on cooling fan . Click the search button then the blue link. First diagram is for the cooling fan . You will see to relay's inside the CCRM - constant control relay module . Knowing ford and this part ,i would venture a guess that it was bad . Test B+ power and ground for the CCRM ,if good ,replace it .

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Cooling fan is not coming on at all how do i wire it up to come on when car is started and stops when car is turned off


Here is a wiring diagram of how you should by-pass that cooling fan by using a toggle switch, and you can get a fuse holder and use a 30 amp fuse instead of a 30 amp circuit breaker, but you should use the circuit breaker since you are no longer using a relay, and if there is a voltage spike the circuit breaker will reset itself, and a fuse will blow out and you will have to change it. Most auto parts stores will carry the 30 amp toggle switch and circuit breaker, also be sure to use 10 ga. wire and do not forget the wire connectors that you will need to attach the wires to the toggle switch, the circuit breaker, and to the battery as well as the connection to the cooling fan wires.

This wiring diagram is very basic and you should be able to follow it with little difficulty, and you should also dis-connect the cooling fan at the wiring connector to the cooling fan and connect the by-pass wiring directly to the cooling fan motor so that you do not run voltage back through the stock system. Let me know if you require further assistance.


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Jun 04, 2010 | 1992 Pontiac Bonneville

1 Answer

Cooling fan inop


the cooling fan is a one speed motor. operates only with key on.
The integrated control module (ICM) and the engine computer control the fan.
on at 102 degree C (@ 230 F), off at 99 degrees C (@ 230 F).
You have 3 fusible links, 2 18 gage brown and on 20 gage dark blue providing power to the ICM. You should ahve 12 volts the pink/black wire, the black/orange wire and the yellow wire going into the ICM.

First, jumper 12 volts from the battery directly to the terminal on the motor where the dark blue wire goes. Make sure the black wire is grounded. If the fan works, check the items above.

I can sell you this Ford wiring diagram book for a 91 Mustang for $10 if you are interested.
please rate as solved if this helps you, thanks.

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