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08-17-2013, 03:18 PM
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#1
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Senior Member
Join Date: Apr 2012
Location: Mossy Head, Florida or somewhere else.
Posts: 303
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ABS indicator light.
2005 Southwind 32vs. The ABS indicator light came on on our return trip from Virginia to Florida. Brakes work just fine. After taking 'stuff' out of the MH when we got back I drove down our road and stood on the brakes at about 45-50 MPH. Stopped straight as an arrow and no lock up. I'm thinking a bad sensor? Anyone know how to troubleshoot the ABS? Thanks for any help.
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Life in the Slow Lane.
U.S. Navy, Retired
SKP #111927
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08-17-2013, 04:02 PM
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#2
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Senior Member
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 31,486
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ABS, light on , as you know is not an indicator of problems with the service brakes, only with the ABS system and , while the light is on you will have no ABS function. Visual inspection of the fuses and wiring is about all you can do without scanning for faults. You could disconnect the battery , for 2 mins to clear the fault, then on start up see if the light stays on after the bulb check, an indication that one sensor didn't return a signal to the controller. That doesn't narrow it down much though.
If the light goes out after the bulb check , but comes on while driving , could be a tone wheel signal problem ; but without know which wheel that's really no help.
__________________
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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08-17-2013, 06:39 PM
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#3
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Senior Member
Join Date: Jun 2011
Location: Bradenton, Fl.
Posts: 725
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Disconnecting the battery does no good nor does inspecting fuses in an ABS system. A visual inspection of the wheel sensors (if you can see them) and wiring may reveal something. If you're on a Ford chassis, we often get failures of the rear sensor which is in the differential housing. Cheap and easy to replace.
__________________
Ray G.
ASE Master Med-Heavy Trucks
RVIA Certified
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08-17-2013, 11:19 PM
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#4
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Senior Member
Join Date: Apr 2012
Location: Mossy Head, Florida or somewhere else.
Posts: 303
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WorkHorse chassis. I'll see if I can find and inspect the sensors and inspect wires. Thanks for the replies.
__________________
Life in the Slow Lane.
U.S. Navy, Retired
SKP #111927
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08-17-2013, 11:32 PM
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#5
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Junior Member
Join Date: Dec 2011
Posts: 7
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I have a 99 workhorse chassis and my sensor is bad and no longer made. I hope you don't have the problem.
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08-18-2013, 06:32 AM
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#6
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Senior Member
Join Date: Jun 2011
Location: Bradenton, Fl.
Posts: 725
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The sensors on a WH are easily accessible. First, look to make sure none of them are melted. Then push & twist to make sure they're all properly seated. They will space themselves out to the required .004 gap. Has yours already had the 51101-C recall done?
__________________
Ray G.
ASE Master Med-Heavy Trucks
RVIA Certified
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08-18-2013, 06:41 AM
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#7
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Senior Member
National RV Owners Club Workhorse Chassis Owner Ford Super Duty Owner Carolina Campers
Join Date: Aug 2011
Posts: 2,266
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I just replaced a melted abs sensor on my '02 W22. It was easy, required no tools, and fixed my ABS light problem.
__________________
2002 National Dolphin LX 6356
Workhorse W-22 chassis
Don't believe everything you think.
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09-25-2013, 06:49 PM
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#8
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Senior Member
Join Date: Apr 2012
Location: Mossy Head, Florida or somewhere else.
Posts: 303
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Quote:
Originally Posted by rgreen45
The sensors on a WH are easily accessible. First, look to make sure none of them are melted. Then push & twist to make sure they're all properly seated. They will space themselves out to the required .004 gap. Has yours already had the 51101-C recall done?
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It has had the recall done. I just found the sensor is melted apart. Not broken. Now I need a part number. My AutoZone buddy says they have then but he could use the part number.
__________________
Life in the Slow Lane.
U.S. Navy, Retired
SKP #111927
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09-25-2013, 06:50 PM
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#9
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Senior Member
Join Date: Apr 2012
Location: Mossy Head, Florida or somewhere else.
Posts: 303
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Quote:
Originally Posted by Ramblin
I just replaced a melted abs sensor on my '02 W22. It was easy, required no tools, and fixed my ABS light problem.
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Ah-ha. Where did you go to find the part number Ramblin?
__________________
Life in the Slow Lane.
U.S. Navy, Retired
SKP #111927
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09-25-2013, 07:00 PM
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#10
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Senior Member
National RV Owners Club Workhorse Chassis Owner Ford Super Duty Owner Carolina Campers
Join Date: Aug 2011
Posts: 2,266
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Quote:
Originally Posted by SteveCal
Ah-ha. Where did you go to find the part number Ramblin?
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OEMY'S website.  Bought the part from him as well.
__________________
2002 National Dolphin LX 6356
Workhorse W-22 chassis
Don't believe everything you think.
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09-25-2013, 09:45 PM
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#11
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Senior Member
Join Date: Apr 2012
Location: Mossy Head, Florida or somewhere else.
Posts: 303
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Quote:
Originally Posted by Ramblin
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Thanks Ramblin. Ya'll are a great help on this forum.
__________________
Life in the Slow Lane.
U.S. Navy, Retired
SKP #111927
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10-06-2013, 11:36 PM
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#12
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Senior Member
Join Date: Apr 2012
Location: Mossy Head, Florida or somewhere else.
Posts: 303
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Received the new ABS sensor from OEM and installed it. Light is still on so he said to read the other sensors. So. Something to do this week. Hope its just one more bad sensor. This part changing troubleshooting can get expensive.
__________________
Life in the Slow Lane.
U.S. Navy, Retired
SKP #111927
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10-07-2013, 07:12 AM
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#13
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Senior Member
National RV Owners Club Workhorse Chassis Owner Ford Super Duty Owner Carolina Campers
Join Date: Aug 2011
Posts: 2,266
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Quote:
Originally Posted by SteveCal
Received the new ABS sensor from OEM and installed it. Light is still on so he said to read the other sensors. So. Something to do this week. Hope its just one more bad sensor. This part changing troubleshooting can get expensive.
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Know that it took some miles of driving for my light to go out. Not sure why, but it did not go out immediately.
To test, get the front wheels off the ground, unplug the NEW sensor from the harness and put an ohm meter on the leads, take a reading and record the results, then give the wheel a spin and take another reading and record those results.
Then do the same procedure on the other wheel. You should get similar numbers if you spin the wheel a similar speed.
__________________
2002 National Dolphin LX 6356
Workhorse W-22 chassis
Don't believe everything you think.
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10-07-2013, 09:30 AM
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#14
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Member
Join Date: Feb 2004
Posts: 80
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Measure the resistance of the ABS sensor. It should read about 1100 ohms when working correctly. Just follow the wire to it's connector and unplug, measure it there. The light should go out after driving a few miles if every connector is OK.
Al DeV
Torrance Ca.
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