Question about Citroen Cars & Trucks
Posted by Anonymous on
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Posted on Jan 02, 2017
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.
Posted on May 04, 2009
SOURCE: ABS Fault? Renault Megane
Hi Liz, I am in exacty the same position as you although I just had the new abs pump fitted and I still have the same problems??? I am going crazy with this, my garage's diagnostic machine won't commuicate with my car and my speedo is not working? My mechanic reckons the abs memory is stuck in a loop and that is why the lights ain't going out, but without a diagnostic I dont know, I guess I will have to take it to a dealership to be ripped off!!!!
Posted on Sep 26, 2009
The first thing i would do is check the wiring on all four wheels.It could be a faulty solenoid.The next thing is a diagnostic check.
Posted on Jan 19, 2010
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