FAQ: Subaru FSM, Service Manual, Workshop Manual, Parts, Procedures, Diagnostics, CEL, Check Engine Light, DTC, Diagnostic Trouble Code.
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CEL, DTC, MIL, Christmas Tree Lights on dash?
If your car has mechanical issues, but no flashing lights on the dash, download and keyword search the FSM workshop manual document for the issue.
If the car has flashing lights on dash, get the codes scanned then search the FSM document for that diagnostic trouble code.
If you have flashing lights on your dash, can’t use cruise control, your car is probably in limp home mode and has one or more CEL’s (check engine light) aka DTC’s (diagnostic trouble code).
You can get the car scanned at an auto shop, eg SCA etc, your mechanic, or lookup how to display CEL/DTC’s on your odometer, assuming you don’t already have an obdii plug and app, eg Btssm, Romraider, Torque etc.
Here’s how to display CEL’s on the odometer, specifically Gen4 Liberty/Legacy, info from FSM:
You may need to search online for the for your year and model.
https://www.subaruoutback.org/threads/0 ... tcs.19053/
Or here:
https://www.google.com.au/search?biw=27 ... VAhM9yJWQ0
As you can see in this video, there’s definitely a technique to the procedure!
https://m.youtube.com/watch?v=DhDzA-6dFm4
My05 ADM GT codes display on odometer:
viewtopic.php?t=1492
My05-09:
viewtopic.php?f=16&t=20112#p445315
Gen3 BE/BH retrieve error codes on odometer:
https://www.legacygt.com/topic/55845-di ... bd-reader/
Impreza extract fault codes:
https://www.youtube.com/watch?v=kJ9-HNBUBc4
Make a note of the codes or take a photo, accuracy is important as many codes are similar but all are unique.
Once you have the code you can google it with eg subaru as a keyword.
Or the code, and the diagnostic procedures can be searched for in your cars FSM.
DTC diagnostic considerations/no code drivability issues:
Generally the diagnostic code names refer to the affected sensor or systems, not the actual fault itself.
Eg P0011 cam position sensor/camshaft position over advanced is very often an avcs or oil supply issue, not a cam position sensor fault, as but one example.
Its a really important point: proper diagnostics involves not making assumptions and not swapping parts as a first step, but requires following the DTC diagnostic procedures, plus being aware of any related or upstream faults that might have contributed to the DTC fault.
Also DTC fault codes are not absolute as per FSM diagnostics, but can be caused by related issues that might not even be covered in the FSM procedures.
Meaning it’s always good practice to search enthusiast forums for related outlier causes of your current DTC.
Additionally cars can have drivability issues that don’t throw DTC codes, either because the relevant setting thresholds haven’t been reached as regards eg fuel and knock learning or eg ecu/sensor self checks.
However you can address your fundamental engine health stats *during warm idle* using any obdii scanner and app, your mechanics scan tool, Romraider, Btssm or AP, and compare the figures to the warm idle specs in your year model FSM. The specs page can be found by searching the FSM pdf for eg “hg” specifically intake manifold vacuum.
You’ll want to compare at warm idle: rpm, afr, intake manifold relative pressure, fuel learning and fuel correction, coolant temperature. If any of the stats are out of range, including rpm surging, it’s time to perform basic health checks to get to the cause. Eg: viewtopic.php?f=6&t=36513
Additionally the FSM has general diagnostic interviews and diagnostic trees for no code drivability issues, eg no crank no start and crank no start: don’t be afraid to search!
FSM links!
Procedures, diagrams and diagnostics are found in your Field Service Manual aka Factory Service Manual aka FSM:
ADM FSM’s... Some but not all can be found in the master list on SLI.net:
https://sl-i.net/FORUM/showthread.php?1 ... nuals-(FSM)-Every-Model-USDM-EU
Or here (if the link above is down):
AUDM Gen4 FSM: includes RHD EJ20Y/X:
https://drive.google.com/drive/mobile/f ... irection=a
https://www.google.com.au/search?q=site ... ent=safari
JDM FSM’s:
http://jdmfsm.info/Auto/Japan/Subaru/Legacy_Outback/
All models:
http://jdmfsm.info/Auto/Japan/Subaru/
So awesome, some of the FSM's linked here are in html form but will open an a mobile phone, very useful for a quick check of the diagnostic procedures related to a specific CEL. Make a donation to this invaluable service, I did.
PDF or HTML FSM?
So many FSM's are in PDF form, download the link, open the document in a pdf reader and search your keywords...
Plenty of the FSM's in these lists are in HTML form, and need a browser that supports this format, luckily SeaMonkey browser will do the job and is availble for PC's and Mac. Download it here: https://www.seamonkey-project.org/
So the HTML FSM will unzip as a folder, drag the index.html link to the SeaMonkey browser icon in your programs list and it should open to the FSM home page.
Some of the info inside is model, or more specifically engine specific, and this will be referred to at the lower end of each page:
H4SO, 4 cylinder single overhead cam engines, 2.0i & 2.5i models...
H4DO, 4 cylinder dual overhead cam engines, 2.0r & late 2.5i models...
H4DOTC, 4 cylinder dual overhead cam turbo engines, 2.0t & 2.5t models...
H6DO, 6 cylinder dual overhead cam engines, 3.0 & 3.6 models...
So generally if I'm looking up something model and market specific, in a PDF FSM, I'll seach for the model type first then the component name.
More FSM's:
Postfl legacy FSM:
https://legacyiv.weebly.com/
Whole bunch of Subaru FSM’s in this Google Drive link I found on FB, thank you OP!
This covers BRZ etc too, go up one directory level for other manufacturers.
https://drive.google.com/drive/mobile/f ... irection=a
Thanks Denis Ryan via Subaru Mechanics FB group:
https://drive.google.com/drive/mobile/f ... 9fdzx0vWPI
Some Subaru FSM's not on Sli.net may be found here:
https://drive.google.com/drive/mobile/f ... nT69Cf1O5k
http://www.allcarmanuals.com/models-Subaru.html
http://ken-gilbert.com/impreza-manuals
https://workshop-manuals.com/subaru/
Subaru to 2020: https://cardiagn.com/subaru/
Wrx/STi to 2018: http://www.wrxinfo.com/service_manuals/
Parts
A guide to DIY Subaru parts translation:
Use your FSM in conjunction with the parts listing via vin on eg partsouq.com/en/search/vin? or
How to find your Subaru VIN: https://www.google.com/search?q=how+to+ ... CA0&uact=5
Here's my car:
https://partsouq.com/en/search/vin?vin= ... H37G048249
Swap your vin for mine in the link or put your vin in the search box...
Or find your car/model/grade on http://www.opposedforces.com
Here's my car again:
http://opposedforces.com/parts/legacy/en_b13/type_36/
Go to the main menu and choose: Legacy>B13>European >Wagon>2.5L dohc turbo>Fulltime 4wd>6spd manual>Grade 2.5GTB>normal suspension>right hand drive
= click that link for parts diagrams. Backtrack and you can find your specific car...
If it's not there, revert to partsouq vin search.
If, like me, you can’t access Opposed Forces site on mobile cell data on a mobile phone, quite irritating: try use a VPN service or an internet browser that has a built in VPN eg Opera.
Opposed forces is great but it only covers up to BP/BL Liberty/Legacy, GR/GH Impreza and SH Forester.
Another scenario is finding parts for a car/model/grade where you don't have access to the vin.
Go to a car sales site, eg Carsales, punch in your keywords eg "Liberty my07 2.5i VIC" find matching cars in Victoria, note the plate number and smash it into the VicRoads registration check website:
https://www.vicroads.vic.gov.au/registr ... on-enquiry
Bingo! You got VIN which can be used eg on Partsouq.com
Buying parts: get quotes via part number (or VIN) from your dealership, Benny's Custom Works (highly recommended, get in touch as not all stock is listed on their website: https://www.bennyscustomworks.com), Garage88, Revzone, Gotitrex, Tuspeed, Street to Track, Kobe Motorsport etc or via your mechanic.
For JDM parts search and cross referencing, http://www.jp-carparts.com is excellent!
Here’s a search for the longer rear hub bolts (901000258) for jdm alloy trailing arms.
The different arms can be seen in the diagrams...
https://jp-carparts.com/subaru/partlist ... =901000258
Online/international: try Flatirons, Celtic Motorsports, Rallysport Direct, Jegs, Nengun, JapanParts, Amayama, eBay, Partsouq etc.
Indeed googling that oddball part number ^^^ will give a thorough view of international oem parts vendors:
https://www.google.com.au/search?q=buy+ ... ent=safari
Secondhand or used parts, try your local self server wreckers or Subaru specialist wreckers.
You can actually use google to find these, even google maps!
At least get an idea of the online prices available, before trying mainstream auto shops eg Bursons, Repco or even your local dealership. They’ll be competitive on common service parts, less so on some items like O2 sensors etc. The latter always buy genuine regardless of vendor...
Parts Usage info
That's right: some parts are specific to only your car, others fit a very wide range of years/models/grades.
Those cars are ALL potential part donors.
How do you find this info?
Well for example, find a parts diagram on eg opposed forces, click the part number, you'll be taken to a page that shows USAGE.
Which is a list of ALL the cars that use this part.
You can see this on parts websites as well, you may have found the part via a VIN search...
Now search the site for the part number itself and very often the models it fits will be listed.
This means you can source your part from a potentially larger range of models, cars that will actually be common in the wreckers yards. More on that below…
This brings us to the concept of parts equivalence… That is… equivalent part numbers.
It's not so relevant here as we're generally well served for spares, but some parts can be produced by different manufacturers, for different brands and models of cars.
This more often applies to generic parts like fuel pumps, filters and so on, but searching online for equivalent part numbers can save money and hassles!
Wreckers and Self Serve Wreckers:
Let's elaborate on the option of sourcing parts at wreckers and self serve wreckers:
You can find these on Google and or Google maps! Eg: keyword self serve wreckers, subaru wreckers etc…
Most of these businesses have websites with stock lists and pictures.
You can even sign up for stock updates.
So you've found your car at the wreckers, you can call them and ask for availability, pricing, delivery or pick up (wreckers), some self serve wreckers offer the sourcing removal option as well. Have your VIN on hand...
Self server wreckers:
Be sure to check all T&C's before proceeding!
For example, pulling a part that's part of an assembly may incur an extra charge, so ask if you're unsure.
This is because removing that specific part from the assy may render the remainder useless.
Some offer parts warranty, you may need to pay a little more for the part.
You'll need a few bucks in change for entry, covered shoes, trousers and long sleeve shirt, preferably a hat and gloves, prepare for inclement weather and MUD.
Tool-wise, I like to bring a good 1/2 & 1/4" socket and bit set, 2' breaker bar, pliers, cutters, rags and bags… but not too much, and nothing you’re not prepared to lose in the morass.
The wrecks are all propped up on steelies, but you can request a Manitou (offroad forklift) to eg lift an engine or box you've made ready for pulling.
They will usually supply wheelbarrows to loan, for carting parts.
You cannot bring in jacks, jumper packs, grinders or anything else that may cause sparks or fires, however, sawzalls are usually ok.
The staff are generally time-poor due to dealing with the public AND industry parts requests, have low expectations regarding manners and customer service!
Don't bother making enquiries without having first done your research, eg VIN, model, grade, year etc or an understanding of using the resources outlined above, to know what equivalent models/years also might contain your part.
Bear in mind these businesses have extensive surveillance and are very used to dealing with lowest common denominator type customers, so be aware of the rules and regs and stick to them!
Otherwise, the trick with the self serve wreckers is to visit regularly, preferably in person, or on the website.
You want to get to that wreck ASAP!
It's the quick and the dead basically.
There's money to be made, so you're actually in competition with a wide variety of professional pickers.
The other important thing is these businesses are open on weekends but do visit early to beat the crowds.
Don't forget to bookmark all links relevant to your car and situation
Here’s an example of using this info to assist with diagnostis and parts sourcing:
viewtopic.php?f=4&t=35541