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Old 01-08-2011   #1
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Climate control error codes

Hi all ..can anyone explain what these 2 error codes actually mean B1902 B1901 in other words whats broke in my climate control Thanks in Advance..Anne
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Old 01-08-2011   #2
Whaddya mean too old?
 
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Re: Climate control error codes

Are you sure you have quoted the correct fault code numbers?

I have
B1901 Air Bag Crash Sensor #1 Feed/Return Circuit Short To Ground
B1902 Air Bag Crash Sensor #1 Ground Circuit Failure

which are nothing to do with climate control. So do you have airbag warnings too? What symptoms do you have showing up on your climate control?
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Old 01-08-2011   #3
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Re: Climate control error codes

i was using FES and looking in the climate control module ..only symptoms were one day last week EML came on and said check engine..before that it was glow plug that was fixed ..just wanted to know exactley what the codes meant B1902 Windscreen flap actuator B1901 windscreen motor feedback..but that may as well be chinese to me..lol..Anne
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Old 01-08-2011   #4
Whaddya mean too old?
 
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Re: Climate control error codes

B1902 Windscreen flap actuator B1901 windscreen motor feedback..but that may as well be chinese to me

The Windscreen flap actuator will be the little motor that drives the flap around to direct the air onto the windscreen and feedback will be the signal from that motor giving its position so there is a problem with the circuit, the motor or the flap itself is stuck
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Old 01-08-2011   #5
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Re: Climate control error codes

Thanks for that . where would i find the little scoundrel.Regards Anne
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Old 01-08-2011   #6
Whaddya mean too old?
 
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Re: Climate control error codes

For right hand drive cars the windscreen defrost actuator will be on the passenger side

Name:  Photo0361.jpg
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There are 5 very similar looking motors. They look like this

Click image for larger version

Name:	left air mixing (blend) flap N78.JPG
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Size:	41.4 KB
ID:	93247
There are 2 blend (hot/cold air mixer) motors, these are ones the lowest down, nearest the floor N78 on left hand side

Click image for larger version

Name:	right air mixing flap N79.JPG
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ID:	93248
and N79 on right side


Click image for larger version

Name:	recirculation flap control motor N82.JPG
Views:	979
Size:	43.2 KB
ID:	93245
There is a recirculation (outside air on/off) actuator N82.This is at the highest point

There are 2 air distribution actuators
The upper air distribution (Defrost) actuator is N83
The lower air distribution actuator is N80

Click image for larger version

Name:	1a=defrost flap actuator N83 1b= air dist actuator N80.JPG
Views:	1076
Size:	51.7 KB
ID:	93244
The defrost actuator N83 for the windscreen is 1a shown here <<<<<<
The lower air distribution flap actuator N80 is 1b

I think I'd remove the passenger seat for access as it's only 10mins to remove it
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Last edited by Deckchair5; 01-08-2011 at 20:27.
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Old 02-08-2011   #7
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Re: Climate control error codes

Thanks for the info..the seats have all been out at one time or another..so that is not a problem i will try to have a look at the weekend ..my husband has a ford and wishes that there was a site as good as Fiat Forums for Fords but there isnt..Regards Anne
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Old 02-08-2011   #8
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Re: Climate control error codes

Decks is there anything one can do by way of preventative maintenance to help stop these motors and flaps packing up? Or is it just old age?
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Old 02-08-2011   #9
Whaddya mean too old?
 
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Re: Climate control error codes

Not really, they are very much like the headlight height adjusters only even more simple than that. Just a little 12 motor, some plastic rack and pinion gears and the 3 wire position sensing potentiometer. Once the position sensor contact is lost say through a poor connection then it can't tell where the flap is but they are easy to take apart and the motors inside are interchangeable so don't throw an old unit away

Name:  Photo0392.jpg
Views: 5643
Size:  5.9 KB
I believe the drive connector from the motor to the air divertor flap is available separately if that's broken
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Last edited by Deckchair5; 02-08-2011 at 20:01.
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Old 25-09-2011   #10
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Re: Climate control error codes

Thanks decks you were spot on Anne
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Old 24-01-2013   #11
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Re: Climate control error codes

Quote Originally Posted by Deckchair5 View Post
For right hand drive cars the windscreen defrost actuator will be on the passenger side

Attachment 93246
There are 5 very similar looking motors. They look like this

Attachment 93247
There are 2 blend (hot/cold air mixer) motors, these are ones the lowest down, nearest the floor N78 on left hand side

Attachment 93248
and N79 on right side


Attachment 93245
There is a recirculation (outside air on/off) actuator N82.This is at the highest point

There are 2 air distribution actuators
The upper air distribution (Defrost) actuator is N83
The lower air distribution actuator is N80

Attachment 93244
The defrost actuator N83 for the windscreen is 1a shown here <<<<<<
The lower air distribution flap actuator N80 is 1b

I think I'd remove the passenger seat for access as it's only 10mins to remove it

Sorry for my English.

I am from Bosnia and new to this forum because I bought Fiat Stilo 1.9JTD MW 140hp.

The car is great, but I have one small problem, same as you described. My car is left handed so I need explaination how to change one of the actuator.

My problem is B1901 and B1902 Windscreen flap actuator but don't know which one. Cound't find it on internet right one.

Please if you have sheme how to remove it, send it over on my mail adisamardzic@gmail.com


Thanks in advance
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