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Old 09-09-2013, 09:10 PM   #1
silvercookie
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Join Date: May 2008
Chapter/Region: Tri-State
Location: Queens, NY, 11385
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2005 WRX
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Default ABS/E-brake light on. No diagnosis connector.

So i have a 2005 wrx. Automatic.

Got into a accident. replaced everything that needed to be replaced etc etc.
EDIT: Forgot to say i was hit on the passenger front frame rail.


Ever since the accident i have had the ebrake/ABS light combo on. I searched through all the diagnosis connector threads. I have searched under my dashboard for hours on end. All i could find were the 2 black/red pinned wires that were taped up with the grey subaru monitor serial port.

I dont have the 6 pin black connector it appears.

I also brought it to the dealership, and after 4 hours i went back and the tech told me he hooked up the subaru select monitor and the usual OBD port scanners and neither of them would let him in to the system to read the codes to find out what is wrong.

Today i also checked through all the ABS/Brake fuses/relays/connectors and everything was good. nothing blown.
Also checked the front passenger ABS sensor and everything was intact as far as i could see. Took it out and cleaned it lightly with a microfiber.

I am losing my mind trying to figure out this problem. I have searched through every wire loom and looked at every connector to no avail.

If anyone has any tips or input as to what the problem could be please let me know. If there is another secret connector for the Auto wrx's or if there is a module underneath the dashboard i can replace.
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Last edited by silvercookie; 09-09-2013 at 09:16 PM.
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Old 09-10-2013, 02:13 PM   #2
silvercookie
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so after digging through the FSM it appears 05+ doesnt have the black diagnosis connectors.
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Old 09-10-2013, 04:39 PM   #3
scrapin'
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So the tech just tells you he can't get in and left it at that? Wow....

So what did get replaced after accident, could help with diagnosis.

There is a section in the FSM on ABS diagnostics...sounds long and tedious but worth it if the system truly isn't working.
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Old 09-10-2013, 06:53 PM   #4
silvercookie
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Quote:
Originally Posted by scrapin' View Post
So the tech just tells you he can't get in and left it at that? Wow....

So what did get replaced after accident, could help with diagnosis.

There is a section in the FSM on ABS diagnostics...sounds long and tedious but worth it if the system truly isn't working.
Yea tell me about it.

Front crash sensors
Passenger and driver airbag.
Seatbelt tensioners.
Radiator support
First 6" or so of the passenger frame rail.

I downloaded the FSM. All it says is use the SSM. Which clearly doesn't work.
There are no other self diagnostic things to do on the 05+ of appears.
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Old 09-11-2013, 03:42 PM   #5
atomicfire
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There are some higher end OBD readers that can connect to the ABS module and scan it for codes. They start at around $120 or so. There's one for $250ish that can cycle the ABS pump without having to use SSM. You can find these tools on Amazon.
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Old 09-11-2013, 04:38 PM   #6
scrapin'
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No, what I meant by the self diagnoses was to read some of the causes that might be worthwhile to check. Like the rest of the sensors and crud on the tone wheels, ect...

BUT since they can't even get into the ABS code storage it might be a mute point as that's probably a good indication of what's wrong. I would assume if the SSM isn't even connecting to the ABS module...that the module itself would be the problem? The dealer didn't have any suggestions? Might try unplugging/replugging the big connector at the ABS module/motor itself (disconnect battery 1st).
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Old 09-11-2013, 07:41 PM   #7
silvercookie
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We tried unplugging the abs module connector, no dice.
Im starting to wonder if the circuit board on the abs pump took a hit in the accident.

I cleaned all the abs wheel sensors and all were intact.
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Old 09-11-2013, 10:42 PM   #8
ryansx
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Hope you didn't have to pay for dealer to tell you "uh we don't know". Sounds like they didn want to mess with it. By chance in the fsm you downloaded is there anything on diag for no communication with abs module? Have you checked power and ground going to the module?
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Old 09-12-2013, 12:45 AM   #9
silvercookie
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PSM

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Yea the tech was nice enough to tell the service counter guys not to charge me. Felt bad cause i had no money to give the guy a tip.

ABS module is getting power. checked it with a DMM.
Ill have to look through the FSM again.

I really think the board on the front of the abs unit got damaged cause i hit the trailer hitch square on the passenger frame rail extension and the power steering reservoir + bracket slammed right into it.
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Old 09-12-2013, 01:25 AM   #10
ryansx
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Very possible, that's an expensive guess though, also a new module might require programming at dealer, some do some dont. If it doesnt have to be programmed you could try to find a used one. Just make sure you check ground circuit and the ground it self.
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