03 e53 AC problems

[jimdanforth]

Only error codes in DME are 202 and 203 lambda codes.

[getty150]

Can't remember the code that came up when I contended with the fan not responding...but I do remember when I cleared the code along with installing a compatible fan from Amazon...the M54 was back in business. I haven't looked back since and that was 7 to 8 years ago .

Sent from my REVVL V+ 5G using Tapatalk

[jimdanforth]

using inpa, i was able to activate the fam and it worked.
I tried the temperature display cluster adjust function and it did not activate the compressor clutch. IS there a way to read the freon pressure?

[80stech]

Put a set of gauges on, should have been the first thing and has been said many times on this forum.

[jimdanforth]

activated clutch in inpa, then unplugged the pressure sending unit and clutch stopped, plugged back in and it runs, so I'm confident it is good. It's just as if the cars is never demanding AC. So I'm really leaning towards the control module/panel.

[jimdanforth]

Originally Posted by 80stech

Put a set of gauges on, should have been the first thing and has been said many times on this forum.

Sorry, thought that was in the original post but it was not. Yes, did start with gauges on the freon and of course high and low side are the same but very close to 40.

[jimdanforth]

Should also add, just replaced the manual control with no improvement.

[EODguy]

Can a faulty hedgehog screw with the compressor? I know it screws the blower motor, not sure about the compressor....

Sent from Embassy network using Tapatalk

[X5chemist]

What are pressures when the clutch is active? Low side should be between ~35-40 and 150+ PSI on the high side.

[80stech]

Both sides at 40 PSI means the refrigerant is pretty much empty, or it's cold outside