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      TIPS & FEATURES AEuro-Forum - READ!!   10/25/2016

      Tips and Features of AEuromotive Technical Site 1.    Quick Peek Feature:       Hover over any Topic/POST within a Specific Forum or NEW POST.  You’ll notice a pop up window displaying the Original (FIRST POST)
      tab containing the vehicle Information and the Diagnostic Issue.  Next to the FIRST POST tab, there is the LATEST POST tab.
      This is the LATEST Reply to that Topic/POST.  It may contain the FIX,NOT FIXED, or UPDATE to the ongoing Topic/POST. 2.    SEARCH Feature: If you have not tried the SEARCH Engine, I’d advise that you do.
      START at the YELLOW Arrow. Then choose from the flip out flag where you wish to begin your initial search. 
      Use Word, or Words separated by a space or comma.  The more words you enter, the wider the search. 
      DO NOT use words like: the, of, abbreviations will not work.  BE Specific!       You’ll be directed to the second “Refinement Page”.  From there, you can narrow the search criteria, by clicking
      +MORE SEARCH OPTIONS. From there attempt to use both sides of the OPTIONS Menu. 
      USE the SEARCH Engine and get comfortable with navigating it. 2a. TSB/SIB/Recalls/Campaigns SEARCH Feature:       Currently, I am working on having the Feature to SEARCH ONLY for TSB/SIB/Recalls/Campaigns for this site. 
      This is in YELLOW type, as it is currently under development.  I hope to get this to work within the initial SEARCH
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      within the TEXT SEARCH FIELD. CLICK the MAGNIFYING GLASS, OR ENTER.
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      Quick SEARCH Feature has been refined for shorter results. I have already ran through some tests with BMW, Mercedes and VW/Audi.        IT WORKS!.  Note! I still have hundreds of TSB/SIB/Recalls,Campaigns, and other related Technical Service Bulletins!
      And this is NOT counting the Domestic and Asian Vehicle MAKES!!  OH, Whoa is ME!!
      Approximately 789 additional FACTORY TSB's in General to do for European.....over 1400 additional TSB Documents
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      and Recalls are available to you.  We have over 1500 document of Factory Level that can help. 
      Again, USE the SEARCH Engine to narrow your results.  Get comfortable with using this great resource. 4. HYPERLINKED Text Within REPLIES in the Topic / POST, Hyperlinks can be added to that reply, or an original Topic / POST.
      It is important that the browser that you are using is set to OPEN a new TAB when a click is clicked. In MOZILLA Browser, quite easy to do.
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      Then check the check box that states "Open New Windows in a new tab instead" Then, when you click a helpful Hyperlink, a new tab, and windows will open to your top right and will go to the
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                If there are more than 3 OPEN or ongoing POSTS, the Member will NOT be able to add another
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                follow this procedure to see what POSTS are currently OPEN.          Click the “Activity” tab > then click “My Activity Streams” > then click “My Open Topics.
               My Open Topics LIST has been modified to ONLY show the OPEN POSTS without REPLIES. 
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               or they are NOT FIXED, or FIXED.  PLEASE, be detailed in the last REPLY, so this will help another
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               please be a productive Member of this site.  I for one will appreciate your efforts. There is a NEW Feature that I have had out Guru Programmer to the site: 2/13/2017 This feature incorporates a "Back to TOP" Button at the bottom of the POSTS Some POSTS are lengthy in information, which makes scrolling the page, or pages time consuming.  Every little bit
      adds up while researching.  TIME is $$$$$, as I always preach.  So now, when needed, you can scroll to the bottom
      of the POST, then click the "Back to TOP" button to go to the top of that POST.         8. FACEBOOK & Twitter Links         For now, located by the AEuromotive Logo, you'll see some small Facebook & Twitter links.  Mind you,
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             Try them, use this to contact Peter.        Again, when this TEXT turns White, it is totally implemented!         9. PICTURES IN POSTS         This FEATURE has been implemented.  When inserting a picture within the POST, make it as small as possible
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             have the Feature to scroll through all pictures resized in your POST.       10. F5 "REFRESH" Feature         This has always been a WINDOWS Feature, but I thought I'd put this up for those that didn't know:         I have tested FF, IE7, Opera and Chrome.    F5 usually updates the page only if it is modified. The browser usually tries to use all types of cache as much
             as possible and adds an "If-modified-since" header to the request. Opera differs by sending a "Cache-Control: no-cache"        CTRL-F5 is used to force an update, disregarding any cache. IE7 adds an "Cache-Control: no-cache", as does FF,
            which also adds "Pragma: no-cache". Chrome does a normal "If-modified-since" and Opera ignores the key. 11. InfoServer 1 and VMDiagnostics Server InfoServer 1 and VMDiagnostics are already in progress, as InfoServer 1 will be comprised of the following Technical
      Information: 1. ISO Diagnostic Programs updated on a weekly basis.  You will need an ISO Application to unzip, or run these programs
          on a "Virtual DVD" 2. PDF Diagnostic Training and Information Documents, requiring you to have Adobe Acrobat Reader installed on your
          computer.  You can get it here for FREE: https://get.adobe.com/reader/ 3.   InfoServer 1 is completed and ALMOST ready to connect to this site.  We are waiting for our security license, and our
           OpenVPN setup.  The SSL (Secure Socket Layer) Certificate is in the process of being issued. And STILL waiting!! 4.   All European, Asian and Domestic Makes and Model Information and User Manuals 5.   All Downloads from the InfoServer 1 will be monitored by Platinum Members that do so.  So I can run a report of
           what and when a download occurred.  Limit is 6 - 8GB per Day VMDiagnostics will be comprised of the following Technical Information: Launch Date for February 2017 This InfoServer 2 is a 4.6+GHz machine with up to 64 Gig of RAM and SSHD (Solid State Drives)
      as to prevent lag and slow response as most Virtualized Systems are. This is no "Puppy" System,
      "Full Tilt Boogie" Machine!! 1.   Virtual Programs running LIVE on this Server for Members to access and use Daily (Charge per Day Access) a.  Mercedes
      b. BMW
      c. Mini Cooper
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      e. Audi
      f. Any other European Make that I can get their FACTORY Programs to run on a  "Virtual Platform"
      g. Domestic Makes (GM, FORD, Chrysler, etc.)
      h.  Asian Makes (Honda, Hyundai, KIA, Mitsubishi, etc.)
      i.  Any Diagnostic Programs that can be "Virtually" operational, I will do so With ALL of the above upcoming Technical Systems coming on line....YOU will be responsible
      for Downloading and Installing these programs...............NOT me.  it is the responsibility of the USER,
      that will have to sign off on the agreement to download and install the programs.  Instructions are included
      in the folders. Please Note!  I will be adding to this ANNOUNCEMENT periodically, so keep coming back to this, and see what other
      Features I have added.  I still have a dozen to add to this ANNOUNCEMENT, as we have upgraded this Forum since
      yesterday 10/24/2016.  Stay Tuned!!

10 posts in this topic

Model: RX 350


Make: Lexus

Production Month: 7

Engine: V6-3456 3.5L DOHC


Transmission: Automatic 4-Speed

Mileage: 111191


Scan Tool Implemented: Snap On Modis/Solus

Affected System: Engine

Type of Problem: Fuel System

Related Repair History:


Vehicle Year: 2007

VIN: 2T2HK31U48C070050

No start, runs when you add fuel. 9 volts at the pump, 9 volts at fuel pump resistor.

Relays click, pulled pump out and pump is good.

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To properly assist we need more information

From what you've posted it sounds as if there isn't sufficient fuel delivery to the cylinders, but more specifically

I need to know are you lacking fuel pressure OR noid operation ? - both conditions can cause the same result, no fuel entering the cylinders.

Whats your battery voltage, do you have noid (if NOT do you have battery voltage on one side of the fuel injector while cranking?)

Whats your fuel pressure, key on engine off do you have a check engine light, are there any codes stored, history pending or current ?

Is there any Security or Immobilizer light on when cranking ?

Fuel pump voltage is controlled its not a 12 feed to fuel pump, that only occurs on cranking & WOT.

  • Inspect Fuel Pump Resistor
  • Measure the resistance between the terminals.
  • Standard resistance: 0.30 to 0.34 ohms at 20 °C (68 °F)
  • If the result is not as specified, replace the fuel pump resistor

Please see attached file....

 

PS: when you post, only post it once, the reason it wasn't up on the board right away , all posts

have to approved by moderators before they will appear on the bulletin board :)

Fuel Pump Resistor.pdf

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VIN decoded as 2008 YM (year model)

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So Garry,

Any news on this issue??

 

Make sure that the battery is fully charged, and scan the entire vehicle.  If you are not using an OEM

scanner or equivalent, get us some P-Codes if possible.

 

The more information you can place on this post, the easier it is to get help.  As we all are here as an

exclusive Group to help each other.

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Have you checked for injector pulse? 

I believe they have constant power with key on and ECM supplies ground for trigger.

 

There is a relay on the left side of the engine compartment that supplies power to the brown wire to the injectors. 

The relay has a 7.5 amp fuse in the junction block on left side of the dash that feeds the violet wire to the relay.

 

First thing I would check. Make sure proper power and ground is present. 

9 volts sounds low. Make sure battery is charged. 

ECM may not operate at low voltage properly.

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B+ and Grounds FIRST and FOREMOST

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Vehicle was towed in no start.

We checked codes, no codes. Engine cranks over, injection pulse, node light.

 

We add  fuel engine runs, no fuel pressure, removed seat, checked  battery voltage at fuel pump, bump key to crank at 11 VDC     

 

Checked grounds, all good.

We replaced fuel pump with O.E, still no fuel pressure. We ohm tested fuel pump resistor, and it is in specs,. 

Fuel pump does not run, we are losing voltage when we plug into pump (2).

 

We checked relays, resistor, crank engine has voltage at fuse box.

We tried to find what else was on this  circuit,  NO LUCK.

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Hard to believe that there is no codes in the Engine Management System.

 

I'll look into this over the weekend.

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Are there any faults??

What is battery OCV?

 

Does voltage improve if you "jump" the resistor?

What did you get for a resistance value when testing the resistor?

 

Did you replace just the fuel pump, or the whole assembly with the fuel pressure regulator and sending unit?

This is returnless system with pressure regulator in the tank installed in the fuel pump assembly.

 

Can you elaborate on losing voltage when the pump is plugged in?

Will the pump run when "jumped" over? Does it run when the relay is jumped over? Do not run for more than ~10 seconds when jumped.

I take it you're checking voltage with the pump unplugged and then backprobing it and checking the voltage that way?

Possible chaffed wire harness, worn relay, voltage drop...

 

I uploaded the fuel pump circuit wiring diagram.

Please note it was two pages. I combined the two pages into a singular .JPEG file to make it a little easier to navigate.

You can click on the thumbnail to view it but I highly recommend downloading it and opening in Irfanview, faststone image viewer, something like that.

Both programs are free.

It will allow you to zoom in.

post-208-0-71977000-1457535984_thumb.jpg

Edited by David Camp-Martin

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measure from pin 5 white black at the fuel pump to Battery negative

while cranking the starter

that value MUST be less than 100mv  

 

report your finding

from that

 

more directions will follow 

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