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Discussion Starter · #1 ·
Hi All:<p>A/C is not working on the passenger side even with the temp control switch set to the lowest temp on the passenger side. Driver's side A/C is fine.<p>I have used a code reader from BSR in Sweden to read the DTC output and there were no codes saved for the ECC. I then removed the glove box and saw that there were 3 servo motors on the inner passenger footwell side of the ECC unit. The upper one controls a large white rotating disk that I assume is attached to the unit that distributes the air to the different areas on command from the control unit. I tried different combinations of vent settings and this control motor responded to each of them. I also tried heat and cold and found that the lower left motor responded to this and I assumed that it was opening and closing a vent to allow heat into the system. I could not see any evidence of movement of the motor on the lower right but there wasn't anything to see moving so I don't know how significant this is. I am not sure it is the vents but I thought it might be. Does anyone have any info on the ECC that might help me with this? <p>Thanks in advance for any help.<p>Gary<br>
 

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finally gave and took it to the dealer. It turned out to be low on refrigerant! I had looked at all the more complex issues and it brought back to me how important it is to start simple. The frustrating part is that I checked it with one of the simple gauges that you get with the R134a kits and it had checked out. That was the most expensive charge I've had.<p>Thanks for all your help.<p>Gary
 

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Re: (green122)

Gary,<p>The 2001 and newer cars charge the refrigerant on the high pressure side of the system. We're no longer able to recharge these ourselves. I was a little miffed finding that out after I upgraded from my 2000 v70. The kits that we've all bought to do the recharge ourselves is for the low pressure side of the ac system.<p>I wouldn't have guessed a recharge would have fixed your issue. At least they didn't have to pull the dash apart. Thanks for following up after your initial post! <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0"> <p>Cheers,<br>Justin
 

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Re: (justin21x)

<br>I didn't realize that the A/C was charged from the high side on a 2002. Thanks for the info. I don't feel quite so bad but I guess my experience with 240's and 740's isn't going to help. This is definitely a learning curve for me.<p>Gary
 
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