Question about 2003 Renault Clio

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Only fan speed position 4 is working. What's the problem?

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You should check the heater fan motor resistor. Here are 2 guides:

http://www.youtube.com/watch?v=PgZE0eM65iY

and

http://www.youtube.com/watch?v=krbIlqbXQbo

Posted on Nov 27, 2013

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2 Answers

I have 2007 Suzuki XL7. I replaced radiator and fan assembly. Fans do not work. Is there a relay? If so, where is it?


Most fan and Ac relays are located in the under hood fuse and relay box. Adequately marked in owners manual or on plastic cover

Sep 03, 2016 | Suzuki XL7 Cars & Trucks

2 Answers

FANS WONT COME ON ,,ALL FUSES,RELAYS AND ELECTRIC FAN MOTORS ARE NEW,,THERMOSTAT IS GOOD,,WHERE IS ELECTRIC FAN TEMP SENSOR LOCATION


op
why not post symptoms first and not a barrage of parts.
must we decode that to a symptom,. kinda hard right.

I will not guess. what is wrong, nor what is not working on your car. now what fans you are talking about, up to 4 fans on cars.

cab blower fan (wild guess blower is ok) and so is HVAC, ?
radiator fans
Condenser fan.

my wild guess to , engine over heats?????????
if yes, the scan it first. no not last FIRST.
it dont work like you think its not a 1988 Samurai.
sorry,
on modern cars, they got smarter, the engine goes
gee the PCM knows water temp why have a fan temp regulator.
hark , now it dont. (saves cash on useless parts)
but has a relay , (well until you have my car and the relay is now 100% electronic, called a huge transistor)
we've used this tech in industry for years, but car makers just learning how still.
i digress. but evolution and history helps diagnosis.
what is there?

Ill look for you, ive posted this 100s of times
the book is 4 bucks to see online. the real deal
lets look now.
XL-7 (the dash matters big time)
answering for , overheats engine, and fans on RAD dead.
(some are staged, PCM brains... now. and also chain ops based on if A/C is on or not) facts.
first I see 2 fans... ok.
the next page shows nice block diagram of the fan system
yup, NOT Simple.

ill post those words for you.
"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 engine control module (ECM) to operate both fans together at low or high speeds. The cooling fans receive positive voltage from the cooling fan relays which receive battery positive voltage from the underhood fuse block.
During low speed operation, the ECM supplies the ground path for the low speed cooling fan relay which is fan 1 relay through the low speed cooling fan relay control circuit. This energizes the low speed fan relay coil, closes the relay contacts, and supplies battery positive voltage from the 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 series/parallel relay which is 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 ECM supplies the ground path for the low speed fan relay through the low speed cooling fan relay control circuit. The ECM grounds the high speed fan relay, which is fan 3 relay, and the series/parallel relay, which is fan 2 relay through the high speed cooling fan relay control circuit. This energizes the series/parallel relay coil, closes the relay contacts, and provides a ground path for the left cooling fan. At the same time the high speed fan relay coil is energized closing the relay contacts and provides battery positive voltage from the fan 2 fuse 1 on the cooling fan motor supply voltage circuit to the right cooling fan. During high speed fan operation, both engine cooling fans have their own ground path. The result is a parallel circuit with both fans running at high speed.
When the request for fan activation is withdrawn, the fan may not turn OFF until the ignition switch is moved to the OFF position or the vehicle speed exceeds approximately 16 km/h (10 mph). This is to prevent a fan from cycling ON and OFF excessively at idle.
end quote.

i bet you didnt scan it , like 99.9 % of all posters here dont.
DTC Descriptors
DTC P0480: Cooling Fan Relay 1 Control Circuit
DTC P0481: Cooling Fan Relay 2 Control Circuit
DTC P0691: Cooling Fan Relay 1 Control Circuit Low Voltage
DTC P0692: Cooling Fan Relay 1 Control Circuit High Voltage
DTC P0693: Cooling Fan Relay 2 Control Circuit Low Voltage
DTC P0694: Cooling Fan Relay 2 Control Circuit High Voltage
Diagnostic Fault Information

is the ECT showing overheat, yes no?
if yes, it must operate a fan or 2.
the book even covers all tests for fans dead, in a large truth table.
both the FSM and alldata.com have that, its no secret ,its published in 4 major places.

lets back up
if the engine coolant is low (no that side tank the engine and rad)
the ECT will lie. if that happens the fans may not come one
that is because the ECT is useless measuring air, for water.
that water must touch ECT for ECT to work.
this is FIRST
then scan the ECT does it show overheating, IT must if it IS overheating. fix that next if it lies to you,(IR gun in hand)

The system has staged fans.
i cant find the trip points in my crappyy online pages.
but is like 225f then 250f trips. is my guess...
about. if the engine over heats, check fuses first then scan it.
it will simply tell you why its bad.
eg, fan1 output dead.
or if you hot wire a fan and its dead, then it is.
(only on cars with non modulated fans,,hot wire them,else not.)

now the link to the 4 buck real book.
the non dash XL7 (my guess) you this pick yourself... cant see car.
https://suzukipitstopplus.com/Products/10182-2007-xl7-service-manual.aspx

this is how it really works
the ECU has software that decide trip points for fans.
hard coded, this is. based on how hot it is and if A/C is on not.
its way smarter than 1988 and better.
the DTC errors can see an open line, shorted to ground or stuck 12v.(runs all time error)
(tells you relay is good or not)

25839272-0kjd5huq4lpr130nt243wle5-3-0.jpg no scanner no joy , sorry, tis a fact.....

25839272-0kjd5huq4lpr130nt243wle5-3-2.jpg

Aug 27, 2015 | 2007 Suzuki XL-7

2 Answers

Heating levels 1-3 not working, but placed in 4th position, then it works.


there is a resistor next to fan on passenger side it is burned out it works on 4 because at that level you are by passing it and it works on high speed

Mar 08, 2015 | 2006 Chevrolet Chevrolet Malibu MAXX LT

2 Answers

2000 Mitsubishi Spyder Interior Fan Only works on 3rd position. Fan Only works on 3rd position. Changed Fan speed control (Twice), resistor , fan ,and relays, But no change. Just one speed on 3rd...


Well according to the wiring diagram, the blower relay gets power from two sources and feeds the fan switch. High speed bypasses the resistor and goes directly to the blower motor. The other speeds go thru the resistor and the motor is grounded.
The AC control panel is connected thru the low speed which would include the other speeds also.
The only thing I could think of would be a break in the wiring or one of the connectors.
Did you check for voltage coming out of the switch for each speed, and then coming out of the resistor too ?

Sep 04, 2012 | 2001 Mitsubishi Eclipse Spyder

2 Answers

Fan only works on speed 4


It is probably the resistor pack on the heater case. This little device controls fan speeds. Yours must be broke. Just pull off the 4 or 5 wire electrical connector, unscrew the 2 fasteners, and pull the unit out for replacement. They are not expensive, but knowing Ford, it may not be as cheap as it should. All they are is a little pack with 3 different coiled wires. Each one will cause a different fan speed by restricting current flow to the motor. Location should be near the fan motor.

Jul 09, 2012 | 2003 Ford Escape

2 Answers

VW Golf 2000 A/C and Fan Blower problem


In most cases, the problem related to blower and A/C switch lies with the fan controller relay which is fitted on the housing of the blower. It is a small circuit board and your fan is connected through this circuit relay and it controls the speed of the fan which further due to safety circuit controls the A/C. indirectly. Check that.

Apr 14, 2012 | 2000 Volkswagen Golf

3 Answers

I have a 2002 Elantra. Yestreday the lower fan speeds on the air conditioner fan stopped working (positions 1,2,3). The High speed (position 4) works. Any ideas how to correct?


The blower motor resistors or fan switch itself are defective.
High speed has no resistors B+ goes straight to blower motor.

Jun 03, 2010 | 2000 Hyundai Elantra

2 Answers

2001 Jeep Wrangler heater blower stopped working


Yes I would go with the switch, BUT, does it have a resistor bank? That is, how does it reduce the speed? Many systems use resistors to lower the speed. Burnt or bad connections can cause this as well.
You can test the blower motor by connecting direct power from a source like the cigarette lighter if you are handy.
Most of the time the lower speeds konk out but the high speed continues to work this is the resistor bank that goes out.

Mar 25, 2010 | 2001 Jeep Wrangler

1 Answer

The blower doesn't work at any of the 4 speed


what voltage reading do you get at the motor in respect to a known earth? Im thinking you have lost the motor earth.

Oct 28, 2009 | 2001 Dodge Ram 1500 Truck 2WD

1 Answer

2004 Nissan Altima Blower Resistor


there is a blower resistor located near blower motor and housing under glove box area it is one connector with about 5 wires to it and looks thin, held by two screws this resistor controls fan speeds - possibly it will look burned may even be hot to the touch so be carefully it is the most probable cause since you obviously have power to it and ground only being the fan speeds the problem.

Aug 06, 2008 | 2004 Nissan Altima

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