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Rover 800 820 825 827 Testing & Fitting a Replacement ABS Wheel Sensor.


Rover 800 820 825 827 Testing Replacement ABS Wheel Sensors.

Car: 1999 Rover 800 825 V6 Coupe



The Rover 800 is fitted with an ABS Self Diagnosis Test. This can easily be used to diagnose any problems that have caused the ABS Warning Light on the dashboard to stay illuminated. The results will most often show a faulty ABS wheel sensor is the problem.

If you do not have the list of the fault codes handy, then knowing that the ABS Wheel Sensors are normally what go faulty, you can also check them manually using a multimeter.

After identifying the cause to a specific ABS wheel sensor you will need to find a replacement. Wheel sensors are an expensive item when it comes to buying new, and so more often than not, a used sensor from a scrap yard vehicle will become a much more viable option.

Having bought 2 replacement Front ABS wheel sensors for this Rover 800 Coupe from the scrapyard for 10 :) It was time to give them both a quick test. This can be done on the car in seconds, without having to fit a sensor to the wheel. (see the video above).

By disconecting the known faulty sensor them connecting each of the replacements in turn, you can check they work prior to fitting them. This saves fitting a naff one! (We already knew they both working though, having tested them on the scrap car in the scrapyard using a multimeter! The last 800 we had checked in the scrap yard had duff sensors which we left on the vehicle!)

You can check passenger or drivers side ones on any side of the car like I have! (they are both the same, just the brackets are reversed). The test can be carried out as long as there are no remaining faults in the rest of the circuit.

Swapping a faulty sensor for a replacement one is quite straightforward, (see photos below).



Rover 800 820 825 827 Testing & Fitting a Replacement ABS Wheel Sensor.
Here the ABS warning light will not extinguish due to a faulty front drivers side wheel sensor!

Rover 800 820 825 827 Testing & Fitting a Replacement ABS Wheel Sensor.
With a replacement wheel sensor sourced, it's time to disconnnect the faulty wheel sensor at the connector under the car bonnet.

Rover 800 820 825 827 Testing & Fitting a Replacement ABS Wheel Sensor.
The lead goes through into the wheel arch and over onto the steering knuckle...

Rover 800 820 825 827 Testing & Fitting a Replacement ABS Wheel Sensor.
...then down to the end of the lead where the wheel sensor is located.

Rover 800 820 825 827 Testing & Fitting a Replacement ABS Wheel Sensor.
Remove the 2 outer bolts holding the wheel sensor and also the bolts that hold the brackets in place

Rover 800 820 825 827 Testing & Fitting a Replacement ABS Wheel Sensor.
A piece of string was attached to the connector under the bonnet before the cable was pulled out through the hole in the wheel arch.

Rover 800 820 825 827 Testing & Fitting a Replacement ABS Wheel Sensor.
The piece of string was attached to the replacement lead and this was pulled back through into the bonnet area.
Using the piece of string made things much easier.

Rover 800 820 825 827 Testing & Fitting a Replacement ABS Wheel Sensor.
The replacement wheel sensor and lead were bolted into place.

Rover 800 820 825 827 Testing & Fitting a Replacement ABS Wheel Sensor.
Now the ABS is working again and the ABS warning light extinguishes as it should.

The ABS Fault Code Memory was then wiped clean.

To do this, from the Ignition 'ON' position, turn the Ignition 'OFF' then back on 20, yes 20 times! (see video here; clearing the abs fault code memory!)




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