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need some how to on abs light staying on. seems to be common

Discussion in '1st Gen. Tacomas (1995-2004)' started by coganhagen01, Apr 22, 2012.

  1. Apr 22, 2012 at 8:34 PM
    #1
    coganhagen01

    coganhagen01 [OP] Well-Known Member

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    I have a 2000 sr5 Tacoma 4x4. The abs light was on when i bought it . Being trying to pinpoint what wrong. I have codes 31,32,44. I been googleing it and it seem this is a common problem with several people. But no can figure what wrong with it. And they keep throwing parts at it with no luck. I even sent toyota an email tonite. As anyone run in to this problem yet and had any luck fixing it. I have done several things to it already and going to try more tomorrow. Any hints or tips would be helpful thanks.
     
  2. Apr 23, 2012 at 11:14 AM
    #2
    dtopgun515

    dtopgun515 Well-Known Member

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    Guess I'll be the first jack leg to post the obvious and I'm sure you've already checked this but I'll say it anyways, have you checked the level of the brake fluid? Mine only comes on when the level is low. I'm sure you've already done that but had to ask. If its not low maybe try replacing the fluid all together.
     
  3. Apr 23, 2012 at 7:14 PM
    #3
    coganhagen01

    coganhagen01 [OP] Well-Known Member

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    Fluid is clear and full. I been reading on posts about short pin on DLC and erasing code. By jumping E1 Tc if rite.but i looked in connector and no terminals in plug in Wa Wb for short pin . And directions say should use? Tired couple times using modis to erase code didnt think i was doing it rite. So im going to try paper clip tomorrow.
     
  4. Apr 23, 2012 at 7:42 PM
    #4
    coganhagen01

    coganhagen01 [OP] Well-Known Member

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    Can u change tire size in a 2000 tacoma. Im guessing u have to take it to dealer if u can. I looked in modis and didnt see anything on there.
     
  5. Apr 24, 2012 at 6:41 PM
    #5
    coganhagen01

    coganhagen01 [OP] Well-Known Member

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  6. Apr 29, 2012 at 11:19 AM
    #6
    jarondenson

    jarondenson Member

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    I am working on the same problem as you right now with codes 32 and 44. I would remove the sensors on the front wheels and check them for metal shavings attached to the ends of the magnet. Also different wheel sizes will not affect the operation of the ABS as long as all tires are the same size. I would recommend checking for shorts in the wiring and also unplugging the sensor connectors and checking for corrosion, then clean and reassemble. I will let you know if I get rid of it. If you do make sure you close the loop and post your solution.
     
  7. Apr 29, 2012 at 11:24 AM
    #7
    jarondenson

    jarondenson Member

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  8. Apr 30, 2012 at 3:48 AM
    #8
    coganhagen01

    coganhagen01 [OP] Well-Known Member

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    I ohm the sensors out and tested the deceleration sensor. I havent done a in depth wiring check going to buy books. I also put new wheel bearings and cleaned sensors several times. I checked connectors. Running out of answers. Im betting on abs controller
    But need more info and testing to tell????? Thanks man any help is needed and two heads are better than one.
     
  9. May 1, 2012 at 2:16 PM
    #9
    jarondenson

    jarondenson Member

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    Where is the location of the deceleration sensor? What does it look like and how many wire go to it if you remember.
     
  10. May 1, 2012 at 2:49 PM
    #10
    coganhagen01

    coganhagen01 [OP] Well-Known Member

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    Under steering column. Got one bolt holding it on.three wires - blue/red,blue/white,light green is wire colors. It a little black box.
     
  11. May 1, 2012 at 3:24 PM
    #11
    coganhagen01

    coganhagen01 [OP] Well-Known Member

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    Ohm out sensors ok. Did volt test from another toyota page and check out 2.8 v at sensor plug. Going more in depth
     
  12. May 1, 2012 at 4:47 PM
    #12
    coganhagen01

    coganhagen01 [OP] Well-Known Member

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    Ok i getting all my check lists off of Mitchell.Its same as snap ons shopkey. Ok checked voltage at terminal E1 and Tc and i had 10.77 volts. Ok next i checked terminals E1 to terminal Ts in my data link connector for abs next to intake. It was 6.51V which test said was bad. And my abs light didnt flash when i jumped them out. It must be between 10-14 volts. E1 is ground. Ts and Tc go to abs ecu.
    OK the test i have says 1. Turn switch on 2. Using voltmeter check voltage between terminals Ts and E1 of DLC1. 3. IF voltage is 10-14 volts,circuit is ok. 5. If abs warning light does not flash even after terminals are connected , malfunction may exist in abs ecu. 6. If voltage reading is not 10-14 volts, check for open or short circuit in wiring harness between abs actuator and DLC1, or between ground and DLC1. 7. Repair as necessary, if wiring harness is okay, replace abs ecu.
    So now i must find a good used abs ecu to try out.:( which i thought was my problem whole time. When i get one i will let u know.
     
  13. May 1, 2012 at 4:51 PM
    #13
    arrrghhh

    arrrghhh Well-Known Member

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    Dumb question, do you have an UltraGauge or ScanGauge? I heard 1st gen's don't play nice with 'em in respect to ABS... Same symptoms you're seeing.

    Just a shot in the dark, good luck.
     
  14. May 1, 2012 at 5:05 PM
    #14
    Jdaniel1274

    Jdaniel1274 Well-Known Member

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    I have the same problem, ABS light will come on somtimes, other times it will not. Sometimes when coming to a stop the ABS will kick in, scares you the first few times, but now I am used to it. I have replaced both wheel sensors. I also would appreciate any help with this issue.
     
  15. May 2, 2012 at 3:38 AM
    #15
    coganhagen01

    coganhagen01 [OP] Well-Known Member

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    About question about ultragauge scan gauge? Im guessing this is a scanner? I use a snap pn modis to scan my truck. But on abs part most of it is jumping wires out and dont need scanner as much.
     
  16. May 2, 2012 at 3:46 AM
    #16
    coganhagen01

    coganhagen01 [OP] Well-Known Member

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    I found so far it has nothing to do with sensors. I looked over internet and talked to people it seem to be in wiring or abs ecu. And toyota wants a arm and leg for abs parts so it best to make sure and not guess. I will post anything i done or checks of abs for anybody if they like. I know how hard it is to get help.
     
  17. May 30, 2012 at 4:31 PM
    #17
    coganhagen01

    coganhagen01 [OP] Well-Known Member

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    Replaced abs pump ecu from junk yard. It stil didnot fix abs light stay have same codes. Uuggghhh 250 down drain. Idk what to do now. Any ideas please help!!!!!
     
  18. May 30, 2012 at 4:40 PM
    #18
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

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  19. May 31, 2012 at 3:49 AM
    #19
    coganhagen01

    coganhagen01 [OP] Well-Known Member

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    Code 31,32,44. Front two abs sensors and deceleration sensor.
     
  20. May 31, 2012 at 4:57 AM
    #20
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

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    For 31 and 32 (both front speed sensors)
    http://www.ncttora.com/fsm/2000/Repair Manual/Diagnostics/ABS/Circuit Inspection/ci313233.pdf

    For 44 (Deceleration circuit)

    http://www.ncttora.com/fsm/2000/Repair Manual/Diagnostics/ABS/Circuit Inspection/ci44.pdf

    You said the light was on when you bought it. Makes me think the previous owner may have stretched the wires in the front speed sensors and broke them. It happens a lot when guys do suspension work and don't unplug them.

    The deceleration sensor is located under the dash behind the steering wheel according to this (see page 5 A9)
    http://www.ncttora.com/fsm/2000/Wiring Diagrams/Parts Position.pdf
     
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