rabs self test not working
i ain't rite
Joined: Mar 2005
Posts: 65,481
Likes: 5,542
From: Marlboro Mental Hospital.
it could be a bad RABS unit, or a brake line broke and hte unit was not properly bled.
my RABS has been disconnected since 3 weeks after i bought the truck because ford could not get it to work properly.
my RABS has been disconnected since 3 weeks after i bought the truck because ford could not get it to work properly.
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
From Steve83:
Flashout Codes
Whenever the yellow REAR ABS light comes on during normal operation, a flashout code may be obtained to aid in problem diagnosis. If the vehicle is shut off before the code is read from a RABS-I module, the code will be lost. In some cases, the code may reappear when the vehicle is restarted.
More information:
RABS Codes
RABS Flow Chart
RABS Troubleshooting
All courtesy of Steve83
Flashout Codes
Whenever the yellow REAR ABS light comes on during normal operation, a flashout code may be obtained to aid in problem diagnosis. If the vehicle is shut off before the code is read from a RABS-I module, the code will be lost. In some cases, the code may reappear when the vehicle is restarted.
More information:
RABS Codes
RABS Flow Chart
RABS Troubleshooting
All courtesy of Steve83
Lead Driver
Joined: Nov 2002
Posts: 9,556
Likes: 43
From: Concord, NC
There are two connections at the master cylinder. The circuit that turns on the red brake warning light is separate from the circuit that turns on the yellow RABS warning light and a connector that is broken internally could cause one or the other to lose connection without affecting the other.
Trending Topics
Thread Starter
|
Senior User
Joined: May 2015
Posts: 282
Likes: 3
From: Sonora,Ca
There are two connections at the master cylinder. The circuit that turns on the red brake warning light is separate from the circuit that turns on the yellow RABS warning light and a connector that is broken internally could cause one or the other to lose connection without affecting the other.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Thread Starter
|
Senior User
Joined: May 2015
Posts: 282
Likes: 3
From: Sonora,Ca
From Steve83:
Flashout Codes
Whenever the yellow REAR ABS light comes on during normal operation, a flashout code may be obtained to aid in problem diagnosis. If the vehicle is shut off before the code is read from a RABS-I module, the code will be lost. In some cases, the code may reappear when the vehicle is restarted.
Moe information:
RABS Codes
RABS Flow Chart
RABS Troubleshooting
All courtesy of Steve83
Flashout Codes
Whenever the yellow REAR ABS light comes on during normal operation, a flashout code may be obtained to aid in problem diagnosis. If the vehicle is shut off before the code is read from a RABS-I module, the code will be lost. In some cases, the code may reappear when the vehicle is restarted.
Moe information:
RABS Codes
RABS Flow Chart
RABS Troubleshooting
All courtesy of Steve83
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
A flashout code may be obtained only when the yellow REAR ABS light is on. No code will be flashed if the system is OK. There are certain faults (those associated with the fluid level switch or loss of power to the module) that will cause the system to be deactivated and the REAR ABS light to be illuminated, but will not provide a diagnostic flashout code.
Before obtaining the flashout code, drive the vehicle to a level area, and place the shift lever in PARK for automatic transmissions and NEUTRAL for manual transmissions.
Notice whether the red BRAKE light is on or not (for future reference) and then apply the parking brake.
Keep the ignition key in the ON position so that the code will not be lost.
To obtain the flashout code, locate the RABS diagnostic connector (with the Bk/Or wire), and attach a jumper wire to it. Momentarily ground it to the chassis. When the ground is made and then broken, the REAR ABS light should begin to flash.
NOTE: If the red BRAKE light was on (as noticed before the parking brake was applied), the problem may be with the low fluid level circuit and, in this case, no flashout code will be flashed and the light will remain on steadily.
Thread Starter
|
Senior User
Joined: May 2015
Posts: 282
Likes: 3
From: Sonora,Ca
Obtaining the Flashout Code
A flashout code may be obtained only when the yellow REAR ABS light is on. No code will be flashed if the system is OK. There are certain faults (those associated with the fluid level switch or loss of power to the module) that will cause the system to be deactivated and the REAR ABS light to be illuminated, but will not provide a diagnostic flashout code.
Before obtaining the flashout code, drive the vehicle to a level area, and place the shift lever in PARK for automatic transmissions and NEUTRAL for manual transmissions.
Notice whether the red BRAKE light is on or not (for future reference) and then apply the parking brake.
Keep the ignition key in the ON position so that the code will not be lost.
To obtain the flashout code, locate the RABS diagnostic connector (with the Bk/Or wire), and attach a jumper wire to it. Momentarily ground it to the chassis. When the ground is made and then broken, the REAR ABS light should begin to flash.
NOTE: If the red BRAKE light was on (as noticed before the parking brake was applied), the problem may be with the low fluid level circuit and, in this case, no flashout code will be flashed and the light will remain on steadily.
A flashout code may be obtained only when the yellow REAR ABS light is on. No code will be flashed if the system is OK. There are certain faults (those associated with the fluid level switch or loss of power to the module) that will cause the system to be deactivated and the REAR ABS light to be illuminated, but will not provide a diagnostic flashout code.
Before obtaining the flashout code, drive the vehicle to a level area, and place the shift lever in PARK for automatic transmissions and NEUTRAL for manual transmissions.
Notice whether the red BRAKE light is on or not (for future reference) and then apply the parking brake.
Keep the ignition key in the ON position so that the code will not be lost.
To obtain the flashout code, locate the RABS diagnostic connector (with the Bk/Or wire), and attach a jumper wire to it. Momentarily ground it to the chassis. When the ground is made and then broken, the REAR ABS light should begin to flash.
NOTE: If the red BRAKE light was on (as noticed before the parking brake was applied), the problem may be with the low fluid level circuit and, in this case, no flashout code will be flashed and the light will remain on steadily.
More Turbo
Joined: Feb 2014
Posts: 656
Likes: 1
From: New Braunfels
pardon my thread hi jack here but the ABS has never worked on my truck since the day i got it, which was 14 months ago, in the time ive owned my truck the abs has never worked and about 20 minutes ago i was sitting in a drive thru waiting for food, and my (ABS) light started flashing out of no where, it flashed 15 times rapidly and paused for about 2 seconds, wouldnt stop til i turned the truck off then i started the truck back up about 10-20 seconds later (ABS) flashed again i got home, turned off the truck made sure float was at the top, unplugged the little connector on driver side of master cyl/res and started truck back up after 20 seconds the light came back on, i gave up took my food in now im here writing this post, ive read a couple things on this and found out 15 flashes = memory loss... i dont have the slightest clue as to what that means ive tried following the trouble shooting chart steve83 posted and dont quite understand what alls goin on with that, some assistance would be greatly appreciated!
TIA
-85F350IDI
TIA
-85F350IDI