help with Peugeot 607 fans !!

[maarksparky]

hi folks

the fan on my peugeot 607 2.2 Diesel is not coming on.. not even with the aircon being on..

thought the relays were bad.. changed both 35amp green ones (low and mid speed) and 45amp blue (high speed) but the fans are still not working..

checked the fan by using a direct feed and it comes on..

so the relays, fuse and the fan are ruled out...

that leaves the two resistors.. very hard to get to without taking the bumper off..

can anyone with Planet check or email me the wiring diagram for the fan or advice what should I check.. as Im not that good with auto diagrams..

please please please help guys..

[chacarita]

Vin number please

[cactikid]

would have thought it may have a radfan switch in rad or maybe on stat housing,aircon fan you would need to switch controls on dash for it to work as its a different fan and has no bearing on engine temp.

[maarksparky]

Vin number please

PM'd you mate.. hope you can help


would have thought it may have a radfan switch in rad or maybe on stat housing,aircon fan you would need to switch controls on dash for it to work as its a different fan and has no bearing on engine temp.

I thought that too mate.. as switching on the aircon should turn the fan on but it doesnt.. checked with the diag and it was showing a circuit problem with the aircon so not sure its related.. but then, regardless of the aircon.. when the temperature reaches more than 97c the high speed fan should come on but it doesnt..

so please please please folks, any advice will be greatly appreciated..

[cactikid]

does that model have 3 relays on front between the 2 fan motors.found this elsewhere.
the fans are on the same circuit as the esp/asr and the anti pollution system. Also if you can hear your high speed fan running then the problem could be an open circuit in your fan resistors, which are situated at the back of the front grill, just behind the peugeot badge.. there is one for high and one for low speed fan.. these resistors are open like a coil and get cruded with limescale and often break resulting in open circuit. The high speed fan should only come on when your aircon is on or when the low speed fan is not working.

[maarksparky]

does that model have 3 relays on front between the 2 fan motors.found this elsewhere.
the fans are on the same circuit as the esp/asr and the anti pollution system. Also if you can hear your high speed fan running then the problem could be an open circuit in your fan resistors, which are situated at the back of the front grill, just behind the peugeot badge.. there is one for high and one for low speed fan.. these resistors are open like a coil and get cruded with limescale and often break resulting in open circuit. The high speed fan should only come on when your aircon is on or when the low speed fan is not working.

yeah read that on my travels in another forum. Scotcruz is a wise man.. but my problem isnt related.. as the relays, fuse and fan are working fine..

[maarksparky]

managed to get the wiring diagram..

anyone know how to read it??

[the_big_d]

Post a scan of the diagram so we can have a look....

[ammarben]

here is the schematic for 406 2.2HDI the same as 607

[ammarben]

i can not upload the schematic but i am going to explane how to test the fan first unplug the coolant tenperture sensor conector
then connect to the connector a variable resistor of 1K and turn the pot of the resistor to 150 ohm the temperture gauge will indicate 95 to 100 degres if the fan start so your coolant sensor is bad if not the two resistor of the fan are bad

[maarksparky]

i can not upload the schematic but i am going to explane how to test the fan first unplug the coolant tenperture sensor conector
then connect to the connector a variable resistor of 1K and turn the pot of the resistor to 150 ohm the temperture gauge will indicate 95 to 100 degres if the fan start so your coolant sensor is bad if not the two resistor of the fan are bad

mate, you are an absolute star... as Im hopless with electrics, please help me more to understand what I am doing..

how do I connect a variable resistor? (what is this)
Do I connect it to the sensor or the wiring that goes into the sensor?
Where is the temperature sensor located? what does it look like..

I didnt think this because, regardless of the temperature sensor being faulty, the fan should come on when the aircon is switched on??

please advise me..

[ammarben]

i have uploaded the schematic
as i sed if you unplug the connector the fan will start if not
1- the one of the 4 relay as described in the schema is burned
2- the two resistor of the limitation of tshe speed of the fan in front of the bamper are broken or burned
36 the calculator ECM dont send the grownd signal(pin 8 hith fan speed,pin 25 and 83 low speed throw the two resistor)
3-the coolant temperture sensor is bad you can test that with a variable resistor pluged in place of the B24 in the connector

[maarksparky]

thanks mate, the 406 diagram is a wee bit different..

I have attached the wiring diagram for my car and also wrote beside it whats what..

if you could be kind and guide me through there.. sorry mate, Im hopeless with wirings diagrams..

Really appreciate your help..

[ammarben]

I'll try to help you with the schem you sent. The computer ECM 1320 controls relay by grounding relays 1509 and 1514 1508 through the pin calculator 8; 25 and 83 thus
1 - put the wire 1595 to ground and see if the fan motor is activated high speed even for the small wire speed number 1592

[ammarben]

take a wire connected it to the the relay 1509 the pin 2 and then put the wire to ground engine running or ignition on the fan should initiate high-speed if not the relay is damaged

[ammarben]

remove the connector from the computer ECM 1320 and put a wire to pin 25 or 8 or 83 then put the wire to ground contact on. the fan turns on.if not there is a break in 1595 and son in 1592 I had a similar failure

[ammarben]

and here is the place schematic of the different component

[ammarben]

sory the shem

[maarksparky]

thanks mate.. took the bumper down as it had stopped raining..

so the update is

All relay's are ok (as I have replaced them)
Both Resistors are ok (I have took them off and checked they are fine)
Fans are ok as when I press the High Speed relay manually, the fans come on.. even when ignition is off..


so this leaves two possibilities..


Temperature Sensor (which I dont know where it is located)
ECM (which I dont know where it is located)


** I will try the ground wire but dont know where ECM is..

Can you please check Planet etc to see where the Temperature Sensor and ECM is located?

Thanks again mate.. you have been a star !!

[ammarben]

i have send to you the shematic of the component place in pdf

[maarksparky]

ok.. found the temperature sensor..

its part 11 in the attached..

now need to see where the ECM is located...

[maarksparky]

i have send to you the shematic of the component place in pdf

cool mate.. have you pm'd me or going to post it here ?

[ammarben]

it is here vent 607 comp pdf file

[maarksparky]

it is here vent 607 comp pdf file

nothing attached mate..

[ammarben]

see above i have attached it and i test downloadig it

[ammarben]

above there is a file named ventillation 607 component.pdf you cant see it?

[maarksparky]

oh alright :) seen it now..

sorry Im all over the place with thing...

will have a wee go by grounding the wire and let you know..

cheers

[maarksparky]

would be great if it stopped raining... f**ing sick of it..

[maarksparky]

remove the connector from the computer ECM 1320 and put a wire to pin 25 or 8 or 83 then put the wire to ground contact on. the fan turns on.if not there is a break in 1595 and son in 1592 I had a similar failure

mate, you said you had a similar failure, did you have to run a new wire from ECM to the relays???

Havent had a chance to look at it today due to rain.. will check tomorrow and will report..

also the scan had an error saying there was a fault in aircon circuit.. any guidance on this?? could it be related??

[maarksparky]

remove the connector from the computer ECM 1320 and put a wire to pin 25 or 8 or 83 then put the wire to ground contact on. the fan turns on.if not there is a break in 1595 and son in 1592 I had a similar failure

ammarben where are you mate??

Just wanted to check whether I have to check the above with the engine or ignition on?? not sure as to put the wire on 25, 8 or 83 I would need to take the connector off from the ECM..

also first there are three connectors on the ECM, do you know what one Im looking for?

in your post you mentioned running a wire to the ground and the fans should go on.. if not then its the relay.. what if the fan DO go on.. what other component could be failing??

please advise mate, really appreciate your help..

[ammarben]

hi friend the probleme is very easy to locate dont panic. First disconnect the battery to avoid any damage then unplug the connector of the ECM 1320 you will see number on this connector from 1 to 88 for the low speed we need pin 83 see in your schematic
1- with a multimetre in ohm position or better in continuity mode chek the continuity of the wire number 1592 between pin 83 of the connector of ECM and pin 2 of the relay 1508 if the multimetre andicate zero in ohm mode or if it beep in continuity mode the wire is not broken if not the wire in broken that i have tell to you test with a wire and grownd pin 83 and see if the fan start you are worried that is normal it is your first intervention
2-the same thing with the high speed between pin 25 of ECM and pin 2 of the relay 1509
if there is no continuity then the probleme is in THE IC02A connector see schematic i have send to you unplug it and clen it from the trust oxidisated

[ammarben]

but to make simple you can ground the pin 83 or 25 of the connector of ECM ignition ON dont trast the engine and see if the fan start on if it start then there is a broken or trunt in IC02A connector see schematic ventillation 607 component place so unplug it and claen it a hade a sililar faillure

[Albanais]

Hi mate, its a big problem actually, I have had this kind of problem and I know the solution. Just cut the wires near the connectors and solder them without the connector, I know it is a little hard but it is a solution proposed by psa so try it mate

Cheers from Albania

[maarksparky]

cheers for the input guys.. I will try it at the weekend as Im working all week and the weather isnt that great either.. I was checking the wire but I think I was looking at the wrong connecter..

also I had an error code P0115 which from reading shows " wrong value from temperature sensor" from the articles around this fault, I can understand that the temperature sensor may be faulty..

however, in your experience, would a faulty temperaure sensor prevent the fan to come on when aircon is switched on ???

please advise..

[Meat-Head]

whoa, not sure about the 607, but normally on these froggy bags of shite, unplug the BROWN plug on tempsender, click 1st speed, click 2nd speed fan.

suggest the plug on the cooling fan shouaud is dud.

get a best probe and probe the pins of the relays, unplug sender, reprobe post finds, love DK longtime

[maarksparky]

whoa, not sure about the 607, but normally on these froggy bags of shite, unplug the BROWN plug on tempsender, click 1st speed, click 2nd speed fan.

suggest the plug on the cooling fan shouaud is dud.

get a best probe and probe the pins of the relays, unplug sender, reprobe post finds, love DK longtime

cheers mate, gonna investigate further at the weekend..

any further suggestion on P0115 and whether it would stop the fan coming on when aircon is on???

[ammarben]

would a faulty temperaure sensor prevent the fan to come on when aircon is switched on ?
The answer is yes
I have told you before to test your coolant tenperture sensor you can use a multimetre in ohm position at different temperture of the coolant exemple at 90 ?C we have 200-300 ohm and at 60 ?C we have 620 ohm at 40 ?C 2600 ohm
so we can simulate the coolant temperture sensor with a variable resistor of 1K and connect it in place of this sensor in the connector we turn the variable resistor at the desired value exemple 200 and see if the fan start if not there is a broken in the circuit of the ventillation

[maarksparky]

wee update..

replaced the coolant sensor this morning.. still the fans are not working, not even when the aircon is on!!!

could the fault code be preventing the fans after the sensor has been replaced? I have read the manual and it says that ECU should be initialised after replacing it.. could that be a problem..

Please help guys..

thats me changed the sensor, relays and checked the resistors.. but the fans dont come on..

[ammarben]

hi mate if youfolow the wiring digram and the schematic in attachment ventillation component place you can find the break wire or chek the IC02A connector unplug it and test for continuity all the wire a have explaned that for you see up

[maarksparky]

The culprit was the IC08 not the ICO2, didnt even touch the IC02A or IC02...

both connectors are in a very awkward position and hard to get into without stripping everything.. I had to take the battery out and take the base out to access it..

It sits right behind the Turbo cooler and think it might have caused it as it was oily and wires burnt on it..

so job done for under ?50... so really happy..

thanks again for everyones support..