M-Class (W163) Produced 1998-2005: ML 230, ML 320, ML 350, ML 400 CDI, ML 430, ML 500, ML 270 CDI

2002 ML320 with low voltage to AC compressor: climate controls pin-out anyone?

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 08-27-2018, 06:08 AM
  #26  
MBWorld Fanatic!
 
Maj. Dundee's Avatar
 
Join Date: Oct 2011
Location: Bronx, N.Y.
Posts: 7,107
Received 751 Likes on 699 Posts
2002 ML 320 & 2006 ML500
Who replaced the compressor?

What was the manufacturer's name of the compressor?

Was the A/C system professionally charged after replacing the compressor?

Were the codes cleared after above?

Please read PDF.
Attached Files
Old 08-27-2018, 09:54 AM
  #27  
Member
Thread Starter
 
ChatWithaNinja's Avatar
 
Join Date: May 2017
Location: ATL
Posts: 146
Received 5 Likes on 4 Posts
2010 R350, 2012 CLS63 P30 (sold), 2009 C63 (totaled), 2002 ML320 (Sold)
I replaced the compressor and the condenser. The auto shop down the road flushed and pressurized the system. No leaks.
The codes have been cleared multiple times, no change.

AC compressor:
https://www.rockauto.com/en/moreinfo...=1387661&jsn=9

Last edited by ChatWithaNinja; 08-27-2018 at 09:57 AM.
Old 08-27-2018, 01:20 PM
  #28  
MBWorld Fanatic!
 
Maj. Dundee's Avatar
 
Join Date: Oct 2011
Location: Bronx, N.Y.
Posts: 7,107
Received 751 Likes on 699 Posts
2002 ML 320 & 2006 ML500
With the eng. running, check fuses 16, 43 & 44 in the eng. compartment and fuse #4 in the right kick panel.

Did you reinstall the AAC and radio etc.?

Last edited by Maj. Dundee; 08-27-2018 at 01:33 PM.
Old 08-27-2018, 03:47 PM
  #29  
Member
Thread Starter
 
ChatWithaNinja's Avatar
 
Join Date: May 2017
Location: ATL
Posts: 146
Received 5 Likes on 4 Posts
2010 R350, 2012 CLS63 P30 (sold), 2009 C63 (totaled), 2002 ML320 (Sold)
I have reinstalled the AAC, but not the radio. I left it out because the right hand lever wouldn't release properly and I almost cracked the dash just trying to pry it out the first time. plus with it out, it makes access to the AAC easier.

I was planning on checking the AAC again to make sure it hasn't blown during this whole process.


All of those fuses read 12v from both ends of the fuse with the car running and the AC on full auto.
Old 08-28-2018, 02:57 AM
  #30  
MBWorld Fanatic!
 
Maj. Dundee's Avatar
 
Join Date: Oct 2011
Location: Bronx, N.Y.
Posts: 7,107
Received 751 Likes on 699 Posts
2002 ML 320 & 2006 ML500



OK, remove the AAC but leave everything connected. Locate conn. #A which should be the first one on the left facing the back.

Start the eng. and select AC. Test wire #1 PINK & wire #2 RED for 12v.
Old 08-28-2018, 10:22 AM
  #31  
Member
Thread Starter
 
ChatWithaNinja's Avatar
 
Join Date: May 2017
Location: ATL
Posts: 146
Received 5 Likes on 4 Posts
2010 R350, 2012 CLS63 P30 (sold), 2009 C63 (totaled), 2002 ML320 (Sold)
OK, pink #1 is putting out 4v and red#2 is putting out 12v
Old 08-28-2018, 06:57 PM
  #32  
MBWorld Fanatic!
 
Maj. Dundee's Avatar
 
Join Date: Oct 2011
Location: Bronx, N.Y.
Posts: 7,107
Received 751 Likes on 699 Posts
2002 ML 320 & 2006 ML500
With these readings it can only mean that there is not enough refrigerant in the system or you have installed the wrong/cheap compressor. Of course you chose the cheapest one, UAC, but you should have chosen the Denso which is original equipment.

And there is no call for the replacement of the condenser because the compressor was replaced.
Attached Files
File Type: pdf
AC Compressor Locked Out.pdf (49.3 KB, 205 views)
The following users liked this post:
ChatWithaNinja (08-28-2018)
Old 08-28-2018, 07:39 PM
  #33  
Member
Thread Starter
 
ChatWithaNinja's Avatar
 
Join Date: May 2017
Location: ATL
Posts: 146
Received 5 Likes on 4 Posts
2010 R350, 2012 CLS63 P30 (sold), 2009 C63 (totaled), 2002 ML320 (Sold)
ok, I'll double check the refridgerant.
The compressor upsets me though. If it is a POS and doesn't work out of the box, it will be a hassle.

thanks for jumping through all the hoops on this one.

I'll update this thread when I have more information or changes.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: 2002 ML320 with low voltage to AC compressor: climate controls pin-out anyone?



All times are GMT -4. The time now is 01:57 AM.