At some point it was likely my Disco would have air suspension problems. This was a good 'un!
Last thursday it sank at the rear after being parked for 15 mins. It had done a lot of wading through the floods & towed a few cars out of them. After a quick check, it appeared the r/h height sensor was defective & a pair fitted as a precaution. During calibration the r/h reading was 10 points lower than the left, possibly sensor tolerances? Car was ok for a day, then sat down over night, but rose to the occasion as it were on start up. it was then ok for a couple of days
Yesterday, car stayed up as per normal but when the door was opened, it let the rear straight down. Did it again this morning but would not raise the rear. Had to inflate it with the Nanocom & change the ECU to spring setting to drive it to the workshop.
The r/h sensor reading was nailed to zero, so the plug was removed from the sensor & a check made for the 5 volt supply. Only saw a floating 2 point something on the DVM. This was a bit like a high resistance connection somewhere. Rave gives the wiring & connectors, so a continuity test revealed the + 5v wire had a break somewhere between the grey plug by the fuse box under the bonnet to the sensor plug. A carefully routed wire, alongside the existing loom was soldered in.
After calibration the readings side for side were identical so the sensors are made fairly accurately. Although the Nanocom reports 5v sensor voltage, it's only at the ECU, not the sensor. A difference between left & right here may be a clue too.
This is the second broken wire, the first being the feed to the roll over sensor. That became intermittent too, leaving the car stuck with no engine & hazards flashing. Usually in awkward places!
Sorry for the long post, maybe useful to someone.
Last thursday it sank at the rear after being parked for 15 mins. It had done a lot of wading through the floods & towed a few cars out of them. After a quick check, it appeared the r/h height sensor was defective & a pair fitted as a precaution. During calibration the r/h reading was 10 points lower than the left, possibly sensor tolerances? Car was ok for a day, then sat down over night, but rose to the occasion as it were on start up. it was then ok for a couple of days
Yesterday, car stayed up as per normal but when the door was opened, it let the rear straight down. Did it again this morning but would not raise the rear. Had to inflate it with the Nanocom & change the ECU to spring setting to drive it to the workshop.
The r/h sensor reading was nailed to zero, so the plug was removed from the sensor & a check made for the 5 volt supply. Only saw a floating 2 point something on the DVM. This was a bit like a high resistance connection somewhere. Rave gives the wiring & connectors, so a continuity test revealed the + 5v wire had a break somewhere between the grey plug by the fuse box under the bonnet to the sensor plug. A carefully routed wire, alongside the existing loom was soldered in.
After calibration the readings side for side were identical so the sensors are made fairly accurately. Although the Nanocom reports 5v sensor voltage, it's only at the ECU, not the sensor. A difference between left & right here may be a clue too.
This is the second broken wire, the first being the feed to the roll over sensor. That became intermittent too, leaving the car stuck with no engine & hazards flashing. Usually in awkward places!
Sorry for the long post, maybe useful to someone.
