E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > E46 BMW > General E46 Forum

General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 04-10-2017, 05:18 PM   #1
Golfer_705
Registered User
 
Join Date: Jul 2016
Location: BC Canada
Posts: 13
My Ride: E46 330ci E30 turbo
SAP no power to relay

I went to get my e46 (330ci) ready to insure this spring but noticed it is running rough on cold starts for 30-120 sec. Hot restarts it runs fine leading me to think a SAP issue.

The blower was not working but works with 12V applied so I started testing the wiring and found I have no power to pin 30 of the salmon relay under dash (think it's pin 2 in the diagrams).

The fuses are all good (fuse #2&3 under hood and fuse #36 under dash all test with batt voltage). The relay itself tests ok and the ECU is triggering the relay but no power is coming into the relay pin 30.

Have I overlooked anything between the fuses and relay? Are there any connections in between or am I more likely looking for a broken wire?

I'll keep poking around with a meter this evening and see if I come up with anything.

Thanks in advance for the suggestions!
Golfer_705 is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 04-10-2017, 07:13 PM   #2
jfoj
OEM ///Member
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 23,021
My Ride: 330CiC, M5, X5, E93
I believe in one of these links there is something about where the SAP relay gets the power from, what fuse number.

ttp://forum.e46fanatics.com/showpost.php?p=17161645&postcount=154

http://forum.e46fanatics.com/showthread.php?t=1041726

http://forum.e46fanatics.com/showthread.php?t=1023149

http://forum.e46fanatics.com/showthread.php?t=965526

http://forum.e46fanatics.com/showthread.php?t=1052605

http://forum.e46fanatics.com/showthread.php?t=1074847

http://forum.e46fanatics.com/showthread.php?t=1074573

http://forum.e46fanatics.com/showthread.php?t=106959

http://forum.e46fanatics.com/showthread.php?t=1074847

http://forum.e46fanatics.com/showthread.php?t=106959

http://forum.e46fanatics.com/showthread.php?t=1078986

http://forum.e46fanatics.com/showthread.php?t=1096889

http://forum.e46fanatics.com/showthread.php?t=1100895

http://forum.e46fanatics.com/showpos...2&postcount=28

http://forum.e46fanatics.com/showpos...7&postcount=29

http://www.bimmerfest.com/forums/sho...ary+air+system

http://www.bimmerfest.com/forums/sho...d.php?t=430048

http://forum.e46fanatics.com/showthread.php?t=1125815
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
jfoj is offline   Reply With Quote
Old 04-11-2017, 12:35 PM   #3
Golfer_705
Registered User
 
Join Date: Jul 2016
Location: BC Canada
Posts: 13
My Ride: E46 330ci E30 turbo
Quote:
Originally Posted by jfoj View Post
I believe in one of these links there is something about where the SAP relay gets the power from
Thanks for all the links. Sorry I should have provided more info on my car.

I purchased the car last year with a 1/2 disassembled motor. I swapped in a 120k km motor and new clutch. I went ahead and replaced most of the seals in the motor before it went in, intake, DISA, front and rear mains, intake elbows, every vacuum line and a few more seals I'm forgetting. The car also got a new fuel pump and filter at the time. All of the maintenance work was done at that time. I also had tested the SAP components when the motor went in. Since all that work being done the car saw 50kms and was then parked for 6 months for winter. Aside from the motor work, the bulk of my time has been spent fixing half a$$ wiring done by PO's of the car.

Back to the SAP issue, I was poking around last night with a meter and realized the wire for replay pin 87 (batt V) was snipped when the old anti theft system was removed prior to me purchasing the car. Got that soldered back up and am picking up a new relay this morning for peace of mind before I put everything back together.

I couldn't find a wiring diagram in your links jfoj, I'll have a hunt today if I can find one.

Only thing I'm curious about now is why the relay is wired with pin 87 as batt V and pin 30 is power to the SAP. That's backwards to how every other relay is wired. Is that correct for this application or were the wires flipped at some point prior to me purchasing the car by mistake?

Last edited by Golfer_705; 04-11-2017 at 12:36 PM.
Golfer_705 is offline   Reply With Quote
Old 04-11-2017, 05:33 PM   #4
jfoj
OEM ///Member
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 23,021
My Ride: 330CiC, M5, X5, E93
http://workshop-manuals.com/bmw/
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
jfoj is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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 On
Censor is ON





All times are GMT -5. The time now is 03:16 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
(c) 1999 - 2016 performanceIX Inc - privacy policy - terms of use