Can anyone tell me where to find the plug that you disconnect and ground to get the error codes to flash for the ABS ??

 

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what year and model?

 

If you have 4 wheel ABS you'll need to use a scan tool to retrieve the trouble codes.
With rear wheel ABS the connector you need to unplug and jump is behind the kick panel on the passenger's side of the truck. The instructions from the manual are..........

CAUTION: Care must be taken to connect only the black/orange stripe wire to ground. Connecting the mating connector wire to ground will result in a blown fuse.

Verify the ignition switch is in the RUN position (engine does not need to be running). Next, locate the black RABS diagnostic connector C207. The diagnostic connector C207 has two mating halves, one of which has a black/orange (BK/OG) wire connected to it. Disconnect the two halves.

Attach one end of a jumper wire to the black/orange (BK/OG) wire side of the diagnostic connector C207. Ground the opposite end of the jumper wire by connecting it to a ground until the ABS light begins to flash. Grounding this wire should start the yellow ABS warning indicator flashing. If grounding this wire does not start the yellow ABS warning indicator flashing, go to the Symptom Chart.

The code consists of a number of short flashes and ends with a long flash. Count the short flashes and include the following long flash in the count to obtain the code number. For example, three short flashes followed by one long flash indicates diagnostic trouble code 4. The code will continue to repeat itself until the key is turned off. It is recommended that the code be verified by reading it several times. This code will be used later for system repair instructions. It should be written down for future use. A diagnostic trouble code 16 is obtained when the anti-lock brake control module detects normal system operation.

 

Does this include 1999 F150 4x4's?

 

Yes, if you have rear-only ABS (RABS).


Steve

 

1999 f-150 4x4 reg cab longbox 4.6l

 

Can't tell from that. YOU have to look and see.

Steve

 

I, too, have a 1999 4x4, long-bed, but extended cab, and my RABS is all screwed up.

ABS and Brake lights are always on. Ford mechanic told me to ignore it all or replace the system for $1200 in parts alone (module and valve). This is a quality built truck? I've owned, and tried to love, Ford trucks for many years, but Ford will not get me back the next time. By the 1999 model they should have had everything right on such a simple vehicle. This problem finally made me see that, along with some other design flaws, and the inherent rust, they sold us garbage at less than 100k miles. Pure garbage.

 

GammaDriver,

Check your rear ABS speed sensor. It's like a $24 part at any parts store. It's located on top of the rear differential. You could just pull the plug off the sensor, and check the resistance on the sensor (mine was an open), replaced the sensor, no more ABS light! Quick, easy, and cheap. Wish they were all like that.

 

I wish they were, too. speed sensor change didn't do anything.
:-(

 

You probably need a new mechanic. For what it's worth, he's an employee of a privately-owned business that holds a franchise from Ford. He's not a Ford employee. A definite distinction that should be understood.

This could be as simple as a blown fuse or low brake fluid. You will need to diagnose the red BRAKE light first which will probably fix the yellow ABS light since the ABS system cannot pass self test if the red BRAKE light is on.

Steve

 

Thanks Steve, I'll put alittle more time into it.

The mechanic told me what he did to diagnose the problem, and it seemed thorough. He told me, as an aside, that I could just ignore it - which isn't really what many dealership mechanics will tell ya.

Fluid it ain't, but I'll check the fuses.

 

GammaDriver,
If you find out any thing please let me know, I have the same problem with mine.

 

I didn't catch that your brake lights are always on too. Brake switch maybe?