I've already pulled the cabin pollen filter it's dry and seems new... But thanks for the advice

 

I'm not finding your link yet....

 

https://landroverforums.com/forum/lr...20/#post484038

 

Thanks bud I looked it over wow tons of great work there!.

 

Well it's 12:30am and I'm gonna crash for the night, but here's what I found so far.there is power going to the rear control panel on the ceiling.But I am not getting anything from the Lin bus..? I'm using a multimeter and also a tester with a light which lights up when current is passing through it which worked well for the p-51 fuse for the rear air underneath the glove box and I also have power in the distribution power box under the hood both with the fuse and the relay... The stepper motors that I purchased are from eBay and I bought the entire cluster which had been removed from a working LR3. They tested and assured that all motors are working. It ran me $90 total. I opened up the front dash and took out the temperature control module and unplugged the harness which controls the stepper motors that are already installed in the truck then I simply plugged in the harness of the new cluster of stepper motors just so that I could see if they would all move back-and-forth when I pressed defrost, front, floor, recirc, temp, etc on the front of the temperature control module. The only motor that works is the same one that's currently working in the truck which is the (Intake air door motor) #M138... All the other motors which I have sitting on my lap in the truck are not moving at all...I'm a little puzzled at this point any thoughts?....

 

Wiring issue, possible climate control got shorted

It takes a while to dry out the carpet and wiring, and that wiring runs everywhere with blue taped splices, every plug needs checking at this point, every ground, every splice

When you find the issue it will likely be cheap easy fix that took a ton of time to figure out, welcome to lr3

 

Well I have good news to report.! I spent two hours on the phone this morning with therealassMikeg I over layed a new Lin bus line from the front control module to the rear ceiling control module and then to the back actuators for the rear blend motors.. We have power at the rear blower but there's a open circuit not telling it to turn on... I have power running to the rear ceiling control module but the lights on the module will not illuminate.. Only the dome light which is on its own plug.. Mike recommended a ton of things to try but it wasn't until we disconnected the Lin bus red wire which leaves the front control module and travels to the ceiling rear module and restarted the truck that the front control module re calibrated all the front actuator motors and they all started working again!! So I currently have normal functioning hvac in the front of the car including all vents blowing from defrost, face and floor.. The ac works the heat works recirc works. But the rear system was causing the fault to shut down basically everything else until I disconnected it so I will keep investigating this week and try to figure out where the fault is but there has to be something causing the open circuit in the rear ac heat?
With Mikes help I made huge progress today couldn't have done it without his patience and knowledge thanks bud!!

 

Glad you made progress! What i was leading you towards was checking the lin for an open or shot to ground. That's why I had you getting to the rear servo motors and the rear ac module. I knew the resistance values you were reading were wrong, I didnt look at the photo you sent me of your vom til later. the leads were in the wrong spot on your meter. when you get around to tracing the lin circuit again. disconnect the servos and rear module then check that wire for a short to ground. I want to add that you figured this out, not me. I only suggested to disconnect the rear module and retest the system.
Nice find!!
talk to you soon...

 

Good evening everyone.
Well.... I had a quirky thing happen to the hvac system this afternoon. I still haven't had time to address the rear ac system and the front system has been working normal until today I noticed when I started the truck and turned on the ac it was only blowing out of the floor vents no matter if I pressed front vents or floor vents but it would switch between defrost and floor just fine but no front face vent.. I scanned and it is now throwing a front/floor stepper code.. So I cleared the codes, disconnected the battery, even switched the front control module with the other one i have but its still intermittently working...? I cleared codes again so I'll check in the morning.. I noticed the Lin bus #1 no longer throwing a code when I scan the hvac system it only throws Lin bus #2? Is that wire also in the same cluster that Lin bus #1 is located? I'd be curious to hear anyones ideas on the new head scratchers..!!
Thanks!!