Question about 1991 Ford Escort

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Cooling fan on a 91 ford escort has a 3 wire molded plug. i know one wire is ignition 12 volts from the relay and one wire is system ground. what is the other for? to further explain, i salvaged this vehicle. to fix it i got a cooling fan from a later model which has a different molded plug. i am planning to eliminate the plugs and hard wire the fan. just need to know which wire is which, or how to find out being that i don't want to tear the car apart tracing wires.

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If your car has the 1.9 motor and A/C then....the Light Green?Yellow wire is from the high speed fan relay, the Yellow wire is from the low speed fan relay and the Black wire is the ground.

Posted on Aug 01, 2010

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Think teh third wire is from teh AC so the fan runs at half speed when ac is turned on

Posted on Jun 05, 2010

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Someone told me to have the clutch adjusted because it doesn't change out when going up the mt. Do I need a new clutch. Woman 50 with this old car. iiiiiiii am pulling my hair out. oh yea the solution . my fan continued to run pulling the battery down at night and I had to roll it off every morning until I hard wired the fan to the inside the car. and I got new battery cables and connectors. Good luck.

Posted on May 21, 2012

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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 .

May 15, 2016 | Ford Cars & Trucks

1 Answer

I have an 05rendezvous,need to locate switches for cooling system,fans aren't co ming on & now I'm going to need a new radiator,cuz plastic broke.But it broke before fans gave out.Which I changed stat


The engine cooling fan system is controlled by the body control module (BCM) and the powertrain control module (PCM) or engine control module (ECM). The BCM performs the calculations as to how long, when and what speed the cooling fans should turn on. The BCM then sends a class 2 message to the PCM/ECM to engage the cooling fan relays. If there is a malfunction with the BCM, the PCM/ECM will control the engine cooling fans independently. The engine cooling system consists of 2 electrical cooling fans and 3 fan relays. The relays are arranged in a series/parallel configuration that allows the PCM/ECM to operate both fans together at low or high speeds. The cooling fans and fan relays receive battery positive voltage from the underhood accessory wiring junction block. The ground path is provided at G100.
During low speed operation, the PCM/ECM supplies the ground path for the low speed fan relay through the low speed cooling fan relay control circuit. This energizes the cooling fan 1 relay coil, closes the relay contacts, and supplies battery positive voltage from the cool fan 1 fuse through the cooling fan motor supply voltage circuit to the left cooling fan. The ground path for the left cooling fan is through the cooling fan 2 relay and the right cooling fan. The result is a series circuit with both fans running at low speed.
During high speed operation the PCM/ECM supplies the ground path for the cooling fan 1 relay through the low speed cooling fan relay control circuit. After a 3 second delay, the PCM/ECM supplies a ground path for the cooling fan 3 or S/P relay and the cooling fan 2 relay through the high speed cooling fan relay control circuit. This energizes the cooling fan 2 relay coil, closes the relay contacts, and provides a ground path for the left cooling fan. At the same time the cooling fan 2 relay coil is energized closing the relay contacts and provides battery positive voltage from the cool fan 2 fuse on the cooling fan motor supply voltage circuit to the right cooling fan. During high speed fan operation, both engine cooling fans have there own ground path. The result is a parallel circuit with both fans running at high speed.
The BCM and PCM/ECM command Low Speed Fans on under the following conditions:
?€¢
Engine coolant temperature exceeds approximately 106?°C (223?°F).


?€¢
A/C refrigerant pressure exceeds 1 310 kPa (190 psi).


?€¢
After the vehicle is shut off if the engine coolant temperature at key-off is greater than 140?°C (284?°F) and system voltage is more than 12 volts. The fans will stay on for approximately 3 minutes.

The BCM and PCM/ECM command High Speed Fans on under the following conditions:
?€¢
Engine coolant temperature reaches 110?°C (230?°F).


?€¢
A/C refrigerant pressure exceeds 1 655 kPa (240 psi).


?€¢
When certain DTCs set.


The three relays are located in the under hood fuse / relay box ! You need to have it checked for DTC'S -diagnostic trouble codes ! An you need a GM Tech 2 scan tool !
This diagnostic procedure supports the following DTCs:
?€¢
DTC P0480 Cooling Fan 1 Relay Control Circuit


?€¢
DTC P0481 Cooling Fan 2 and 3 or S/P Relay Control Circuit


?€¢
DTC P0691 Cooling Fan 1 Relay Control Circuit Low Voltage


?€¢
DTC P0692 Cooling Fan 1 Relay Control Circuit High Voltage


?€¢
DTC P0693 Cooling Fan 2 and 3 or S/P Relay Control Circuit Low Voltage


?€¢
DTC P0694 Cooling Fan 2 and 3 or S/P Relay Control Circuit High Voltage


  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool, command the Fans Low Speed ON and OFF.
Do the low speed engine cooling fans turn ON and OFF with each command?
Go to Step 3
Go to Step 4

3

Important:: A 3 second delay occurs before the powertrain control module (PCM)/engine control module (ECM) changes the cooling fan speed.
With a scan tool, command the Fans High Speed ON and OFF.
Do the high speed engine cooling fans turn ON and OFF with each command?

Aug 08, 2015 | Cars & Trucks

1 Answer

Where is the radiator fan switch located on a 2002 oldsmobile intrigue


The engine cooling fan system consists of 2 electrical cooling fans and 3 fan relays. The relays are arranged in a series/parallel configuration that allows the powertrain control module (PCM) to operate both fans together at low or high speeds. The cooling fans and fan relays receive battery positive voltage from the underhood accessory wiring junction block. The ground path is provided at G113. The relays are located in the underhood fuse / relay box .
So ,what's the problem Paul , car overheating ? Fans not working ?
During low speed operation, the PCM supplies the ground path for the low speed fan relay through the low speed cooling fan relay control circuit. This energizes the cooling fan 1 relay coil, closes the relay contacts, and supplies battery positive voltage from the cool fan 1 fuse through the cooling fan motor supply voltage circuit to the right cooling fan. The ground path for the right cooling fan is through the cooling fan 2 relay and the left cooling fan. The result is a series circuit with both fans running at low speed.
During high speed operation the PCM supplies the ground path for the cooling fan 1 relay through the low speed cooling fan relay control circuit. After a 3-second delay, the PCM supplies a ground path for the cooling fan 2 relay and the cooling fan 3 relay through the high speed cooling fan relay control circuit. This energizes the cooling fan 2 relay coil, closes the relay contacts, and provides a ground path for the right cooling fan. At the same time the cooling fan 3 relay coil is energized closing the relay contacts and provides battery positive voltage from the cool fan 2 fuse on the cooling fan motor supply voltage circuit to the left cooling fan. During high speed fan operation, both engine cooling fans have there own ground path. The result is a parallel circuit with both fans running at high speed.
The PCM commands Low Speed Fans on under the following conditions:
?€¢
Engine coolant temperature exceeds approximately 106?°C (223?°F).


?€¢
When the A/C is requested and the ambient temperature is more than 50?°C (122?°F).


?€¢
A/C refrigerant pressure exceeds 1310 kPa (190 psi).


?€¢
After the vehicle is shut off if the engine coolant temperature at key-off is greater than 140?°C (284?°F) and system voltage is more than 12 volts. The fans will stay on for approximately 3 minutes.

The PCM commands High Speed Fans on under the following conditions:
?€¢
Engine coolant temperature reaches 110?°C (230?°F).


?€¢
A/C refrigerant pressure exceeds 1655 kPa (240 psi).


?€¢
When certain DTCs set.



So

May 11, 2015 | Oldsmobile Cars & Trucks

2 Answers

My 1999 ford escorts cooling fan is not working


These are normally easy to diagnose if you know a little about vehicle maintenance...Check the fan fuse/relay to begin with..Check all connections/wiring to fan...Also it has a sensor..The best way to eliminate if the fan is bad or not is to use simple jumper wires..Disconnect fan motor connector and take two jumper wires..the fan motor should have two connectors..Run one wire to hot battery post and one to negative battery post ..Connect one to hot connector of motor and one to ground..If fan doesn't work fan is faulty..

Feb 21, 2015 | 1999 Ford Escort

1 Answer

1993 Ford Escort Blower Motor & AC Switch


I'm going to start from the beginning.
The blower motor gets power from the high blower relay and it is grounded thru the fan switch and the resistor. So you should have power on the pink white blower wire coming from the high relay to the blower motor. The orange black wire from the motor is ground going to the resistor and fan switch. The blue wires on the control panel are for the ac compressor.
The high blower relay gets power from fuse number 5 in the box. The blower motor is grounded thru the resistor and then thru the fan switch.
Photo courtesy of AutoZone.com
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Jun 10, 2013 | 1993 Ford Explorer Limited

1 Answer

The fan in the rear a/c heater isn't working. Did


If you have 12 volt power going to the rear fan ,fan is bad
If you dont have 12 volt getting to rear fan
1 bad fan switch
2 open power or ground wire
3 bad resistor module
some cars may have relay wired up in there some where

Aug 07, 2011 | Ford E-350 Super Duty Cars & Trucks

1 Answer

Hi im putting in a JVC cd/radio in a 1997 ford escort TD,Ive removed factory fitted Ford radio cassette,leaving 5 wires connected to a yellow plug,I have 3 wires coming out of JVC marked yellow memory back...


hi...well i know this might not be of any help, but you can buy a connector that plugs straight into the ford plug, and then you plug the jvc plug/s into that, not cutting wires no messing up the original connector just incase you want to sell the car with original system in it... http://productfinder.autoleads.co.uk/productinfo.aspx?&m=FORD&f=ESCORT&id=463&pID=6889
thats the link for it...if you tell me what colours are on the ford plug i could tell you what goes where...thanks

Feb 04, 2011 | 1995 Ford Escort

2 Answers

In the 94 Ford escort there are 3 wires that come from the cooling fan. i need to know which one is possitive which one is negative and what the 3rd one means


If your car has the 1.9 motor and A/C then...Light Green/Yellow stripe wire is from the high speed fan relay,
Yellow wire is from the low speed fan relay and Black is ground.
Both LG and Y are "positives" just different fan speeds.

Mar 19, 2010 | 1994 Ford Escort

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.

Apr 22, 2009 | 1991 Ford Mustang

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