Technical Fiat Stilo 1.6 Dynamic AC Problem
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Technical Fiat Stilo 1.6 Dynamic AC Problem
Hi, Welcome to the FF.
If you have climate control, try the self learn procedure, but I don't think it will resolve a permanently on fault.
CLIMATE CONTROL SELF-LEARNING PROCEDURE
The AUTO and MONO buttons must be pressed simultaneously within 40 seconds of the ignition being turned to the ON position in order to active this procedure. A few seconds later a figure will appear on the display (in place of the driver's side set temperature) which will count down to indicate the time remaining before the start of the procedure. At the same time (i.e. whilst the count down is taking place) the previous self-learning status is signalled on the passenger temperature setting:
'1' flashes if the previous self-learning procedure failed
'0' indicates that the previous self-learning procedure was successful
This procedure is not carried out if at least one of the above mentioned buttons is released whilst the figure on the left hand side is not zero (this is designed to check the outcome of the previous self-learning procedure).
Exiting the procedure zeroes the 40 second counting period from when the ignition is switched ON, to allow the procedure to be repeated without having to switch the ignition OFF.
Each time a new control unit is fitted, the flap actuator learning test must be carried out using the diagnostic equipment and the unit must be personalized through programming.
If you have climate control, try the self learn procedure, but I don't think it will resolve a permanently on fault.
CLIMATE CONTROL SELF-LEARNING PROCEDURE
The AUTO and MONO buttons must be pressed simultaneously within 40 seconds of the ignition being turned to the ON position in order to active this procedure. A few seconds later a figure will appear on the display (in place of the driver's side set temperature) which will count down to indicate the time remaining before the start of the procedure. At the same time (i.e. whilst the count down is taking place) the previous self-learning status is signalled on the passenger temperature setting:
'1' flashes if the previous self-learning procedure failed
'0' indicates that the previous self-learning procedure was successful
This procedure is not carried out if at least one of the above mentioned buttons is released whilst the figure on the left hand side is not zero (this is designed to check the outcome of the previous self-learning procedure).
Exiting the procedure zeroes the 40 second counting period from when the ignition is switched ON, to allow the procedure to be repeated without having to switch the ignition OFF.
Each time a new control unit is fitted, the flap actuator learning test must be carried out using the diagnostic equipment and the unit must be personalized through programming.
If the clutch is permanently engaged, you would be able to see the outer part of the compressor pulley turning.
With the engine running, watch the pulley while someone switches the A/c on and off. The main part of the pulley that the belt goes around will be turning permanently, but as the A/c is switched on, you should hear a click, and see the outer part start to turn. When the A/c is switched off, the outer part should stop turning.
With the engine running, watch the pulley while someone switches the A/c on and off. The main part of the pulley that the belt goes around will be turning permanently, but as the A/c is switched on, you should hear a click, and see the outer part start to turn. When the A/c is switched off, the outer part should stop turning.
If it stops when you take the relay out, then the clutch is engaging electrically and probably not seized.
Is it T9 or T5 you need to take out to stop it?
After you've checked which relay it is, switch the ignition off and remove the keys, then check if you can turn the outer part of the pulley by hand. If you can, then the clutch is not seized.
Is it T9 or T5 you need to take out to stop it?
After you've checked which relay it is, switch the ignition off and remove the keys, then check if you can turn the outer part of the pulley by hand. If you can, then the clutch is not seized.
If the A/c stops when you take out relay T5, then it's likely that T5 is stuck on. How did you test it to say it was OK.
Relay T10 is for the electric fuel pump inside the fuel tank. Nothing to do with the A/c.
Does the outer part of the compressor pulley turn by hand with the ignition off and keys removed?
Relay T10 is for the electric fuel pump inside the fuel tank. Nothing to do with the A/c.
Does the outer part of the compressor pulley turn by hand with the ignition off and keys removed?
If the outer part of the pulley is free when the ignition is off, then the compressor clutch is OK.
Assuming both relays T5 and T9 are OK, then T5 must be getting an A/c enable signal from the engine management ECU. To test it any further, you would need to have, and be proficient with a multimeter, or take the car to an auto-electrician.
Has the problem been there ever since you've owned the car? or has it occured suddenly?
Assuming both relays T5 and T9 are OK, then T5 must be getting an A/c enable signal from the engine management ECU. To test it any further, you would need to have, and be proficient with a multimeter, or take the car to an auto-electrician.
Has the problem been there ever since you've owned the car? or has it occured suddenly?
ive had the car a year but i think its been like this since ive had it but not too sure i jus hope this doesnt cost alot 2 fix and when i press the ac button inside i hear a click and the revs go up so i dont think its that
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If it's been like it ever since you got the car, perhaps the previous owner bypassed it to make it appear as though it was working.
It may have been bypassed at the pressure switch (K120 in the wiring diagram above). Check for any obvious signs of wiring modification at the switch. It's at the bottom left (looking from the front of the car) side of the engine radiator. Highlighted in the diagram below.
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It may have been bypassed at the pressure switch (K120 in the wiring diagram above). Check for any obvious signs of wiring modification at the switch. It's at the bottom left (looking from the front of the car) side of the engine radiator. Highlighted in the diagram below.
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hi mate got an guy looking at ac prob but he wants wiring diagram is the on u sent me for m model is i have the manual ac controls not the digital or is it the same diagram? or do u know where i can download the srvice and repair manual in pdf format?
Re: Fiat stilo 1.6 a/c problem help please
The wiring diagram I posted above is for the manual controlled version.
Please do not start multiple threads about the same problem.
Think you may need a new mechanic.
The fact that it's a manual system, means that it doesn't have an ECU. The clue is the word manual.
The wiring diagram I posted above is for the manual controlled version.
Please do not start multiple threads about the same problem.
Think you may need a new mechanic.
The fact that it's a manual system, means that it doesn't have an ECU. The clue is the word manual.Re: Fiat stilo 1.6 a/c problem help please
Sorry for starting the other thread mate so there's no ecu it runs through at all not even the main ecu just can't figure out what the problem could be taking it back 2 garage on Tuesday is there anything you can think of to tell him to try I live in Spain and finding a good mechanic ain't easy lol
Sorry for starting the other thread mate so there's no ecu it runs through at all not even the main ecu just can't figure out what the problem could be taking it back 2 garage on Tuesday is there anything you can think of to tell him to try I live in Spain and finding a good mechanic ain't easy lol
