Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E53) Forum
Arnott
User Name
Password
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management


Reply
 
LinkBack Thread Tools Display Modes
  #11  
Old 05-09-2020, 11:48 PM
Member
 
Join Date: Mar 2016
Location: Saskatchewan Canada
Posts: 2,053
80stech is on a distinguished road
Learning to read wiring diagrams is always a good thing!
__________________
1988 325is (purchased new) sold
2004 X5 3.0 2005 X3 2.5
2008 X5 3.0 (new to me)
Reply With Quote

Sponsored Links

  #12  
Old 05-10-2020, 01:21 AM
EODguy's Avatar
Member
 
Join Date: Jun 2018
Location: Saudi Arabia/Philippines/USA
Posts: 3,831
EODguy is on a distinguished road
MAF testing can easily be done by while the engine is running and the MAF disconnected from the airbox, tap hard the outside of the sensor with the handle of a screwdriver (not ass beating hard). If you get a stumble in the idle then the film sensor is loose. I have had issues with MAFs a lot lately and even OEM which I believe has been infiltrated with fakes into the supply chain.

Sent from my SM-A730F using Tapatalk
__________________
"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course
Reply With Quote
  #13  
Old 05-10-2020, 03:37 AM
EODguy's Avatar
Member
 
Join Date: Jun 2018
Location: Saudi Arabia/Philippines/USA
Posts: 3,831
EODguy is on a distinguished road
Quote:
Originally Posted by harleyclassic2 View Post
It would be my 4th one if I buy.. within 4 months. One was OEM Bosch.
Just wanted to check...

Do you have a good scanner like Foxwell or ista-d, etc?

Are all your o2 sensors working and showing no codes?

Are you getting a low signal code from the MAF?

And not sure what if any bearing it has on it, but do you happen to have any license plate lights and rear fog light out?(specifically the left side) This last one is probably just a coincidence but I was getting bad MAFs that started when I had those lights out and I had a ground issue causing that and since the MAF has a 2nd sensor reading the ground it would NOT surprise me that a ground somewhere else (hot to ground) could screw up the sensitivity of a ground in the MAF.

But I had the same for a while that caused me to want to hunt down the BMW electronic system engineer and fixing the lights saved my MAF ir like I said complete coincidence...

Sent from my SM-A730F using Tapatalk
__________________
"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course
Reply With Quote
  #14  
Old 05-10-2020, 10:26 PM
upallnight's Avatar
Member
 
Join Date: Aug 2012
Location: Cook County
Posts: 7,280
upallnight is on a distinguished road
If you have a 3.0 engine the OE maf was made by Siemens not Bosch.
__________________
2006 Infiniti G35
2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD
Lotus Europa 1970 Destroyed by fire
Lotus Europa 1970 S2 Renault Powered
Lotus Type 52 1970 Twincam Webers Powered
PORSCHE 911 Targa 1982 The Garage Queen
Audi Avant donated to Kars for Kids
BMW 525IT Sold
Audi 4000CS Quattro Sold
Jensen Healey Lotus Powered Sold
Opel 1900 Sold
Triumph Spitfire 1971 Sold
Triumph Spitfire 1968 Sold
Plymouth "Cuda" 340 Six pack SOLD
Reply With Quote
  #15  
Old 10-12-2021, 11:48 AM
Member
 
Join Date: Jan 2020
Location: Calgary
Posts: 872
Bmwe5320023.0 is on a distinguished road
There's a bunch of letters on the diagrams, such as
HZHL, NTCHL, NTC, HEIZ etc. Is there a list somewhere that explains what they all mean?

Last edited by Bmwe5320023.0; 10-12-2021 at 12:00 PM.
Reply With Quote
  #16  
Old 10-12-2021, 12:06 PM
Member
 
Join Date: Jan 2020
Location: Calgary
Posts: 872
Bmwe5320023.0 is on a distinguished road
I see these everywhere.
Not sure if the bar is a fuse?
Reply With Quote
  #17  
Old 10-12-2021, 12:23 PM
Member
 
Join Date: Mar 2016
Location: Saskatchewan Canada
Posts: 2,053
80stech is on a distinguished road
The bar could be anything. The transistor and bar symbol mean there are some electronics and give rough idea of what's going on.
__________________
1988 325is (purchased new) sold
2004 X5 3.0 2005 X3 2.5
2008 X5 3.0 (new to me)
Reply With Quote
  #18  
Old 10-12-2021, 12:25 PM
Member
 
Join Date: Jan 2013
Location: Finland
Posts: 1,376
Clavurion is on a distinguished road
Quote:
Originally Posted by Bmwe5320023.0 View Post
There's a bunch of letters on the diagrams, such as
HZHL, NTCHL, NTC, HEIZ etc. Is there a list somewhere that explains what they all mean?
Signal types. Most of them are found in WDS Component and signal information -> Signals.
__________________
E39 530dA -02 M-Sport Messing metallic
E53 X5 3.0dA -06 Sport Stratus grey
Reply With Quote
  #19  
Old 10-12-2021, 12:28 PM
Member
 
Join Date: Jan 2013
Location: Finland
Posts: 1,376
Clavurion is on a distinguished road
Quote:
Originally Posted by Bmwe5320023.0 View Post
I see these everywhere.
Not sure if the bar is a fuse?
A resistor and transistor connected to module (board) internal ground. A rough representation of a load and signal transfer.
__________________
E39 530dA -02 M-Sport Messing metallic
E53 X5 3.0dA -06 Sport Stratus grey
Reply With Quote
  #20  
Old 10-12-2021, 01:44 PM
RocketyMan's Avatar
Member
 
Join Date: Jan 2020
Location: PNW
Posts: 553
RocketyMan is on a distinguished road
Quote:
Originally Posted by Bmwe5320023.0 View Post
There's a bunch of letters on the diagrams, such as
HZHL, NTCHL, NTC, HEIZ etc. Is there a list somewhere that explains what they all mean?
I see what you are talking about. In this example it is the rear seat heating. I think it has to do with the feature and the specific wire. In this one example, it looks like "LEFT" and "RIGHT" being part of the abbreviation. I understand the wire cross-sectional area as the middle number, and the color of the insulation as the bottom.

I tried searching the abbreviations section on TIS and could not come up with ANYTHING. But I do believe its an acronym for something. Is it perhaps the terminal name?
Attached Images
 
__________________
2003 BMW X5 3.0i -- MT5, 3.64s final gears, H&R lowering springs, K-Mac bushing kit
2007 BMW X3 3.0Si -- MT6
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On





All times are GMT -4. The time now is 05:21 AM.
vBulletin, Copyright 2024, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
© 2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.