[QldChef]

Naples, The procedure is outlined in the Bentley guide with pictures if you have a copy (p280-11). If not you'll need a Multimeter to test them.

From memory the speed sensor is the middle of the 3 sensors on the left hand side in the engine bay. Remove the 'clip' from around the sensor and pull straight out. The sensor has 3 terminals, the bottom one is no.1, the middle no.2 and the top no.3. Use the Meter to test between terminals 1 & 2 (the bottom and middle), this should give you a reading of 960ohms +/- 96ohms. The reading between terminals 1&3 and 2&3 should be >100,000 ohms. I couldn't get a reading at all on the speed sensor but the reference sensor tested within range. I had a mate test on the control unit under drivers seat and confirm it was faulty and the reference sensor was ok.

I hope my description makes sense and doesn't sound like i'm dribbling you know what.