My abs / anti rollover in my ranger has always seemed overly sensitive.

A few days ago I heard the ABS scrubing noise when going down my steep driveway on the way to work in the morning.

It seems like right hand turns esp make it want to go off. This morning I was stopped at a light and when the light changed, I m making a right hand turn and the system cut power during the turn (along with the scrubbing noise) . Yesterday the abs and rollover lite up the dash and stayed that way till I restarted the engine. It had done that about a year ago a few times but not again until this week.

Any idea why this system is so overly sensitive?

Thanks..

 

You would probably get more response if your post included a model year.

 

Use your ELM scan tool, running FORScan diagnostic software on the viewing device of your choice, as discussed here https://www.ford-trucks.com/forums/1...-scantool.html, to scan All of the vehicle computer/controllers, like the ABS controller, for trouble code clues & post All code Numbers, as they can help focus your trouble shoot.

 

I had a similar problem a year ago and mine turned out to be bad front abs sensors, I think if the problem is on the right the sensor on the left is the problem.

 

Let me see if I can post some logs. I have a bluetooth scanner with torque app so it may not be what you want. I ran it like 3 times and reset after the first log.

I think I have them uploaded now..let know if this helps at all.

thanks

 

Did you fix youself and/or was it expensive?

Thanks

 

As ranger pat asked, what year model, engine, tranny, brake system do you have?

Try here https://www.obd-codes.com/trouble_codes/ for the "C" = Chassis & "U" = Network codes. Looks like the computer isn't happy & is loosing communications, so maybe you have some loose connections, switch, wiring, or electrical connection problems. Check/perform visual/wiggle/voltage drop connection tests on your battery & engine to body ground connections, brake, dash, power electrical connections & wiring. All need to be clean, bright & tight. Let us know what you find.

 

2011 4 cylinder 5 speed auto. 78k. Brakes are 4 wheel disk

Any idea specifially where I should look? Any idea where is the computer that controls the rollover functions?

Thanks...!

 

Before you jump into your trouble shoot, consider trying FORScan, as it's tweaked for Fords & let it scan all of the vehicle computer/controllers, as it can access Ford mfgr trouble code clues that some diagnostic software can't, so maybe it can help more tightly focus your trouble shoot.
Post All code Numbers FORScan finds & the forum will see if it can suggest a more focused starting point.
In automotive trouble shooting, we're to begin with the lowest number trouble code, put it right then work our way up the list to the next highest code Number & put it right, ect, ect.
The computer electrical connector is under hood, passenger side, high up on the firewall, the computer electrical connector sticks through the firewall & the wiring harness electrical connector connects to it under hood. The connector needs to be clean, connections bright, tight & dry.
The computer itself is in cabin, passenger side, up above/behind the glove box liner. We can access it by pushing in to flex the glove box door sides, so the stops clear the opening, to drop the glove box door down & removing the glove box liner to access the computer.
My Taurus computer was held up with a metal strap & 2 fasteners.

 

Ok I just bought ForScan..let me get it setup and see what I can find.

BTW, I did a search with one of those error codes and one person who had same issues said code is abs speed sensor error. In his case, it was tolerance between the sensor and the rotor. He bought a different brand rotor and that fixed it.

BTW if anyone can recommend a good shop on the Gulf coast, please let me know.

This is the first american vehicle I have ever bought and I don't know who is honest/competent in my area.

Shortly after I bought this truck I was given an old but low mileage escort.
I took it to a shop recommended by others and they never could fix any of it's issues but I was $1100 in the hole for nothing. So I am a bit scared of getting burned again. So any recommendations appreciated.

Let me see if I can get some readings with this new software...thanks.

 

If you find the rotor to wheel speed sensor distance is high up on the suspect list, before throwing a set of rotors at the problem, make sure the front wheel bearings play is adjusted to spec. Folks forget to check wheel bearing play as specified by Ford in our scheduled maintenance call out. I've found mine loose twice now, but not enough to cause ABS problems though.
FORScan is a very powerful diagnostic tool for our electronic tool box. My ELM327 scan tool & running FORScan on my laptop, paid for itself on it's first use, by pointing me in the right direction on my Ranger ABS trouble shoot & also by finding Body trouble codes I didn't know I had, stored in the GEM, for my power windows that had recently developed problems & that helped me find & fix my intermittent power window problems.

 

Your software really helped narrow down the issue! Take a look:

===RCM DTC U0154:00-08===
Code: U0154 - Lost Communication With Restraints Occupant Classification System Module

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Restraint Control Module
===END RCM===

===PCM DTC ===
Successful DTC reading, no error codes found

Module: Powertrain Control Module
===END PCM===

===OBDII DTC ===
Successful DTC reading, no error codes found

Module: On Board Diagnostic II
===END OBDII===

===OCS DTC ===
Successful DTC reading, no error codes found

Module: Occupant Classification System Module
===END OCS===

===ABS DTC C1297-F0===
Code: C1297 - Right Front Wheel Speed Sensor Input Signal Fault

Module: Antilock braking system
===END ABS===

===ABS DTC C1963-20===
Code: C1963 - Stability Control Inhibit Warning

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Antilock braking system

Diagnostic Trouble Code details

Stability Control Inhibit Warning


===END ABS===

===GEM/SJB DTC B1318-20===
Code: B1318 - Battery voltage Low

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Generic Electronic Module / Smart Junction Box

Diagnostic Trouble Code details

Battery Voltage Too Low

--- Possible Causes --------

- Battery Voltage below 9.6volts

-Suspect Battery state of charge Charging system


===END GEM/SJB===

===IC DTC ===
Successful DTC reading, no error codes found

Module: Instrument Cluster
===END IC===



So it sounds like its the sensor, the connection, or something out of tolerance.

Sounds about right?

 

The thing that stands out for me is the B1318 code, battery voltage too low, below 9.6 volts to the GEM!!! EDIT: So as the software suggested, check the battery state of charge & the alternator under load output, to make sure they're ok. If all that checks out ok, proceed from the under hood power distribution box using your multi-meter to make sure under load B+ is making it that far without voltage drop. If that's ok, wiggle the GEM fuses to see if they're loose, or pull them to look for corrosion that could cause under load voltage drop to the GEM = Generic Electronic Module. It controls a lot of things for which you have trouble codes.
The GEM is in dash along side, or behind the radio, not certain of it's exact location in your later year model than mine. Mine was along the drivers side of the radio opening.
Maybe it's electrical connector is loose, or a B+ feed to it is loose or damaged, or maybe it's a faulty ground.
This code seems to be a tighter focus of the dash wiring code your first diagnostic software flagged. Remove the radio to have a look-see & wiggle/thump test on the GEM & All of it's wiring & electrical connectors, all the way from the under hood power distribution box & fuse, to where the wiring harness B+ feed goes through the firewall, to the GEM. Again be sure to remove the under hood power distribution box GEM fuses, to look for corrosion at the fuse contacts & let us know what you find.

 

Ok Thank you.

I can do basic electrical checks (but only basic)my self and will see what I can find. Truck starts fine and never a sign of low voltage. But let me see if I can find anything and if so will report back..
Thanks.

 

Attaboy, get that multi-meter & go get that danged problem, bet you can successfully trouble shoot this problem....standing by!!!!