ABS light diagnostic

[drivemusicnow]

I searched and couldn't seem to find any pertinent information. Something about an LED under the passenger seat... I dunno.

My ABS light comes on after between 2 and 5 minutes of driving. It stays on for the rest of the time, and ABS in inactive. How do I get my OBDII car to tell me what it's not happy with?

I am NOT going to a subaru dealership to get charged 90$ for them to hook up their fancy computer and check. I'd rather physically check everything myself, however if there is another way to have the computer tell me what's wrong, I'd love to hear about it.

[svxcess]

It may be hard to read, but check out this page in the FSM about checking the ABS using the LEDs under the passenger seat.

CLICK HERE (http://www.subaru-svx.net/photos/files/How-To/25336.jpg)

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[svxcess]

The same page, Section 4-4, pg 71, of the FSM says:


B: SELF-DIAGNOSIS

Conduct self diagnosis after driving the vehicle at speeds greater than 19mph for at least one minute. The vehicle must be stopped with the engine operating. When a problem is detected by self-diagnosis, the warning light on the instrument panel comes on.

Approximately 5-12 seconds after the warning light has come on, the problem detected by the ABS control unit (located under the right front seat) is displayed by a trouble code in terms of "the number of LED blinks"

Both the warning light and the LED remain activated unless the ignition is turned OFF. With the ignition key turned OFF, the contents of the problem stored in the memory are reset.

Only one trouble code is displayed at a time. When a multiple of problems occur, only the first problem detected is displayed.

If the LED does not activate (though the warning light is ON) the power supply may be inoperative.



C: LIST OF TROUBLE CODES

00 (LED OFF)...Improper power line voltage or faulty harness.
01...Broken or shorted solenoid valve circuit(s) in hydraulic unit ..LEFT FRONT WHEEL CONTROL
02...Broken or shorted solenoid valve circuit(s) in hydraulic unit ..RIGHT FRONT WHEEL CONTROL
03...Broken or shorted solenoid valve circuit(s) in hydraulic unit ..RIGHT REAR WHEEL CONTROL
04...Broken or shorted solenoid valve circuit(s) in hydraulic unit ..LEFT REAR WHEEL CONTROL

05...Faulty wheel ABS sensor ..LEFT FRONT WHEEL SPEED
06...Faulty wheel ABS sensor ..RIGHT FRONT WHEEL SPEED
07...Faulty wheel ABS sensor ..RIGHT REAR WHEEL SPEED
08...Faulty wheel ABS sensor ..LEFT REAR WHEEL SPEED

09...Faulty motor and/ or motor relay or broken or shorted harness circuit.
10...Faulty valve relay or broken or shorted harness, or interrupted ABS (causing brakes to function as a conventional brake system.) Unidentified fault that are not equivalent to trouble codes 1-16

16...Faulty ABS Control Unit or broken or shorted harness or malfunctioning system or line unidentified by vehicle ABS sensor fail-safe function.


Hope this helps. maybe you can get borrow Section 4 of the FSM from a local member, or get a scan of that section for further troubleshooting help and electrical values. Hope this helps you get started.



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[LetItSnow]

I don't know if it applies to all MYs, but (contrary to the FSM) you don't need to mess around with pulling up the carpet next to the door as it describes. Move the passenger seat forward and find the flap which is a couple of inches from the right rail, iirc.

Thanks to svxfiles for that tip - once again, answering all of my calls, even with Caller ID. :lol:

[plantchick]

Hope this helps. maybe you can get borrow Section 4 of the FSM from a local member, or get a scan of that section for further troubleshooting help and electrical values.

I have the section(US) in .pdf format I can send if you would like. Chapter is about 4.5MB and in a lot of small files, but doable. (sorry, my desktop with full adobe is down so I can't compile them)

Tania.