The Diesel Garage banner

1 - 18 of 18 Posts

·
Senior Member
Joined
·
400 Posts
Discussion Starter #1
Installed my injectors saturday, took it out that night and it ran fine no problems. Took it out hunting sunday, 100 miles of freeway couple of hours idling along in gear and the 100 miles a freeway home not a problem :), until today :(. Went out a few minutes ago to run to the store pulled onto the highway looked down and the speedo was dead and the ABS light was on? Hooked up my smarty to read the Abs and it quickly read, CCD error #97 Program Arorted? Any ideas? I don't have time to look at it tonight but some suggestions would be helpful.
thanks
 

·
Junior Member
Joined
·
81 Posts
abs sensor on the rear end can do that
 

·
Premium Member
Joined
·
2,641 Posts

·
TDG Mafia
Joined
·
651 Posts
x3! I recently had the same problem. Although my speedometer still worked. My rear end speed sensor was cracked at the mount, but somehow still giving speedometer readings.

I got the part at Advance Auto Parts (Auto Zone didn't have it even listed) and was pretty cheap, maybe $25 or so. I put it in right in the parking lot, and as soon as I drove 10 feet, my ABS and BRAKE lights turned off.
 

·
Senior Member
Joined
·
400 Posts
Discussion Starter #5
Thanks for the replies. I dunno what was wrong with it, I took the fuse out and wiped it off and looked at it, put it back in and the problem went away. Everything works like normal now?
Thanks again
 

·
Senior Member
Joined
·
400 Posts
Discussion Starter #6
The problem came back again :( I changed the sensor in the rear end and come to find out the clip was broke on the plug so i thought i had it solved but the next day the abs light came right back on with no speedo. i removed the rear cover and looked the tone ring and eveything looked fine. I checked the wiring a little but i couldn't see a thing. Any suggestions on where is to look or what to do?
 

·
Premium Member
Joined
·
2,641 Posts
It for sure something with the rear speed sensor. If it was the front sensors the speedometer still works but BRAKE/ABS lights are on...



Fairly simple setup... If the speedometer is not working its the rear sensor. If the speedometer is working but lights are on its the front sensors.
 
  • Like
Reactions: tbroadus_41

·
Senior Member
Joined
·
400 Posts
Discussion Starter #8
I HATE electrical stuff but i'll give it a try, Thanks
 

·
SIXINAROWMAKES'EMGO
Joined
·
271 Posts
dont feel bad my abs light, brake light, and seatbelt ligh tstay on and my speedo bounces bad on the interstate
 

·
Senior Member
Joined
·
400 Posts
Discussion Starter #10
Well you don't sound as anal about your truck as i am about mine, no reason to run with those things if it can be fixed.
 

·
Member
Joined
·
78 Posts
I have the bouncing problem all of a sudden. Where is this sensor located?
 

·
Member
Joined
·
78 Posts
Replaced the sensor, brake idiot lights still on. :damnit
 

·
Junior Member
Joined
·
96 Posts
Vehicle » Sensors and Switches » Sensors and Switches - Brakes and Traction Control » Wheel Speed Sensor » Description and Operation Notes



Description and Operation


FRONT WHEEL SPEED SENSOR

DESCRIPTION
The ABS brake system uses 3 wheel speed sensors. A sensor is mounted to each front steering knuckles. The third sensor is mounted on top of the rear axle differential housing.

OPERATION
The Wheel Speed Sensor consists of a magnet surrounded by windings from a single strand of wire. The sensor sends a small AC signal to the CAB. This signal is generated by magnetic induction. The magnetic induction is created when a toothed sensor ring (exciter ring or tone wheel) passes the stationary magnetic WSS.





When the ring gear is rotated, the exciter ring passes the tip of the WSS. As the exciter ring tooth approaches the tip of the WSS, the magnetic lines of force expand, causing the magnetic field to cut across the sensor's windings. This, in turn causes current to flow through the WSS circuit in one direction. When the exciter ring tooth moves away from the sensor tip, the magnetic lines of force collapse cutting the winding in the opposite direction. This causes the current to flow in the opposite direction. Every time a tooth of the exciter ring passes the tip of the WSS, an AC signal is generated. Each AC signal (positive to negative signal or sinewave) is interpreted by the CAB. It then compares the frequency of the sinewave to a time value to calculate vehicle speed. The CAB continues to monitor the frequency to determine a deceleration rate that would indicate a possible wheel-locking tendency.
The signal strength of any magnetic induction sensor is directly affected by:
Magnetic field strength; the stronger the magnetic field, the stronger the signal
Number of windings in the sensor; more windings provide a stronger signal
Exciter ring speed; the faster the exciter ring/ tone wheel rotates, the stronger the signal will be.
Distance between the exciter ring teeth and WSS; the closer the WSS is to the exciter ring/tone wheel, the stronger the signal will be.



The rear WSS is not adjustable. A clearance specification has been established for manufacturing tolerances. If the clearance is not within these specifications, then either the WSS or other components may be damaged. The clearance between the WSS and the exciter ring is 0.005 - 0.050 inch. The assembly plant performs a "Rolls Test" on every vehicle that leaves the assembly plant. One of the test performed is a test of the WSS. To properly test the sensor, the assembly plant connects test equipment to the Data Link Connector (DLC). This connector is located to the right of the steering column and attached to the lower portion of the instrument panel. The rolls test terminal is spliced to the WSS circuit. The vehicle is then driven on a set of rollers and the WSS output is monitored for proper operation.





Account | Vehicle | Help | Contact | Exit
© 2009 ALLDATA, LLC. All Rights Reserved. Trademarks | Privacy Policy | Terms and Conditions
 

·
Member
Joined
·
78 Posts
is the speedo still not working? is the abs light still on? the brake light still on?
Still bouncing under med - hard acceleration, and the idiot lights are still on.
 

·
Senior Member
Joined
·
400 Posts
Discussion Starter #18
Could it be something like the controller under the hood or something?
 
1 - 18 of 18 Posts
Top