92 f150 5.0l abs light came on the other day and has stay on.

i hook up the code reader but nothing has came on. how do i check for codes?

 

Check the brake fluid level

 

A gift from Steve83: RABS Codes

 

its like a little bit low but it should be enough cause that would it?

 

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. In other cases, the vehicle may have to be driven to reproduce the problem and, if the problem was associated with an intermittent condition, it may be difficult to reproduce. Therefore, whenever possible, it is recommended that the code be read before the vehicle is shut off. RABS II modules have been designed with Keep Alive Memory to preserve stored codes during key-off, and are to be used to service all prior year RABS I systems, except for 1987 and 1988 Bronco II vehicles.

NOTE: If the red BRAKE light is also on, due to a grounding of the fluid level circuit (perhaps low brake fluid), no flashout code will be flashed and the REAR ABS light will remain on steadily. Top up the brake master cylinder reservoir before attempting to read codes.

 

ok so grouned the abs computer wire and nothing

so what this mean?

light stays on 24/7. cannont get it to flash the code

 

Is the red brake light on too?

Some great info from Steve83: RABS Flashout Code Chart

 

no just the abs light is on

 

There is some good information in the link I posted. Hard to say from here what the cause is.

 

ok thanks for the info.but it dosnt say how to reset it.mine only has one the one connector so how do i reset the abs ?

 

Last paragraph:

After ALL codes have been read & repaired, clear the memory by turning the key off while the connector halves are separated, then reconnect the halves.

I would read that to mean shut the key off while you have the jumper installed since you have only the one wire.

 

i have no clue whats going on. cant reset it either.

 

The best thing you can do is unplug the RABS module underneath dash by glove box. The RABS system on the 92 is junk. IMO.

 

I found this:

Flash Code 0 (No Flash): Verify the Master Cylinder Connector is fully seated.

If the connector is good, might be a good idea to ohm it out. Then check the RABS 20 Amp fuse (Fuse Panel Fuse 15).

Since your truck has a RABS-I controller there is no Keep Alive Memory (KAM). Once you shut off the key the memory is cleared.

 

its been on for almost 2 weeks now, even unhook the battery for hour and it still on

ill check the connector and fuse tomorrow