Remove the wheel and examine the 'tone wheel' (a serrated hub that rotates with the wheel) and a pickup probe that mounts near to the tone wheel. Look for rocks that might be wedged in rubbing on the tone wheel and a bent or damaged pickup probe. Rotate the brake rotor to help find the noise. Also, shake the rotor in and out in several positions to check for loose wheel bearings.
Is it a constant rough sound that increases with speed from the left front?
Then 99% chance of needing a wheel brg on that left front.
Just noise when braking?
Then 99% chance of needing brake pads or pads and rotors.
The ABS light may go out after one or both of these things are repaired.
The ABS codes can be checked for the exact cause and suggested repair needed to correct the ABS system.
Good place to start looking for cause of ABS light on.
These definitely sound related. Need to inspect to see if it's something loose (like a wheel sensor) or the brake pads need replacing, etc. etc...
Charlie
The bearings on the wheels has to be installed one way only, the rotor ring is built into the bearing and if installed the wrong way round the sensor cant pick up the wheel speed causing the ligt to be switched on in the cluster. The diagnostic equipment should pick this up as a fault once the car has been driven, it will see the sensor when you do the diagnostic if the car is standing still but once the car is moving and no signal is send from that wheel it would register a fault into the memory of the PCM that you would be able to retrieve later.
There is a way for you to test the sensor yourself by using a multimeter set on volts, you jack the vehicle up at that wheel, install a vehicle stand to support the vehicle to be safe, disconect the wheel speed sensor and probe the two wires into the sensor, spin the wheel by hand and a small amount of current will be produced meaning the the sensor is working and the wheel bearing is installed the correct way, you can also do a continuaty test on the sensor by switching the multimeter onto ohms, but be very carefull, if this sensor has three wires you cant do the continuaty test because of the integrated circuit in the sensor, the three wire sensors opperate on a voltage from 5Volt and it would be destroyed by the multimeter opperating on 9Volt.
If the continuaty test passes and the bearing is installed the correct way, the most comon fault would be a break in the wiring leading to the PCM
Hope this will be helpfull.
SOURCE: abs ativates during light brakeing, already
There are 4 wheel speed sensors, a problem with any one of them could cause this. -Carl
SOURCE: i scanned my 06 chrysler 300 abs.it said left
try taking battery off for half an hour and retry
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