He pulled a face and muttered something unflattering about Land Rovers, but then agreed for a small payment in beers we could treat it as a personal project for me and we would spend a few evenings getting this stuff sorted out. In terms of a solution, I spoke yesterday with Paul, my friend who runs the garage. However, there were these additional codes under new categories, different codes but all with a similar message: Each was under a different group including ABS, SRS, Ride level control module and All terrain control module.ġ/2: U0132 Lost communication with ride level control moduleĢ/2: U0421 Invalid data received from ride level control moduleġ/1: U0132 Lost communication with ride level control moduleġ/1: U0421 Invalid data received from ride level control moduleĪs one can see, the invalid data error was reported by 4 different systems, but all using the same code. So I cleared all the DTCs, took the car for a drive, no warnings or lights and the suspension worked a charm.ġ/5: C1A74 (Again) Rear left height sensor mechanismĢ/5: C1A05 (Again) Rear left height sensor Part 1 Codes: (First plug in, as I found the car)Įrror 1/5: C1A74 Rear left height sensor mechanism - status - currentĮrror 2/5: C1A05 Rear left height sensor - status - currentĮrror 3/5: C1A07 Cross articulation - status - currentĮrror 4/5: C112F Air spring valve - status - currentĮrror 5/5: C1130 Air spring air supply - status - current However, the second set all mentioned one component which I thought was interesting. A little worried that when I did the first reading there were only 4 codes, yet on the second where were about 10. To a novice like myself I was pleased to note the errors all appear to be coming from a single source. Then part 2, I cleared the original codes, took the car for a 10 minute drive, put the suspension up and down and up and down and did a lot of braking and swerving and then took another set of code readings. I took photos of each and I shall go through these in a moment. The first where I read the codes as they presented the first time. A few odd errors on systems like the speakers (?) but I am happy to ignore those for now. Just this minute I went out to the car and did a full scan. I got the iCarsoft i930 as it seemed to have most of the functions I needed. On the advice of I went out and bought a second hand code reader on eBay. I made a quick post to outline the problems I was seeing, including the suspension bottoming out and hopping, then working just fine! Then going ping and disappearing. Last edited by vee8auto 8th September 2017 at 12:28 AM.Picked up a 140,000m Disco 3 late last week and I love it. Shoulda checked them several years ago when I got the diagnostic tool. The calibration value at 'mechanical zero' at normal height is allowed/expected to be slightly different across all 4 corners but the change in height / change of calibration value should be fairly repeatable. It then might be too high so reduce both sides 5 at a time to bring it down to close to 466mm front or 485mm rear. until that axle is even height side to side. If that happens it still needs tweaking and you need to bring the soft side calibration value up by say 5 at a time. If the heights are all close, drive it squarely over a large domed speed hump at approx 20kmh, and see if the front or the back wallows to one side when it drops down off the hump, that might indicate uneven pressures side to side. Put it in Tight Tolerance Mode if you really want to be fussy. Raise the car to off-road height, while rolling slowly, then lower to normal height while rolling slowly. If the heights are all over the shop I suggest you make a note of the calibration values that are in it, then put them all to 190. The procedure requires a full tank of fuel, all your crap out of the back of the car, and all tyres at normal pressure. ( This equates to between 190 and 200 for the constant ( fudge factor ) aka 'Calibration Value'. The normal height for front is 485 mm from top of wheel arch (internal) to centre of axle. The normal height for front is 466 mm from top of wheel arch (internal) to centre of axle. Start by checking your heights in normal mode. I started by trying the calibration sheet / calculations but soon cottoned on to the essence of the adjustment. I have just worked through a re-calibration of all 4 corners on the D3 as I had replaced all the controls arms.
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