Globetrotter448
Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1782
  
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The original error code was that the compressor could not refill quick enough. Next you indicated front left went to bump stops. You indicated all height sensors are good. Fault only occurs on rough roads.
To me this indicates that you have a leak at the left hand front that on shows up on rough roads. Now this could be a crack in the air bag that only releases air when extended, the voss connector or pipe on top of air bag that gets vibrated when on rough roads.
Possibly check airbag by putting suspension in extended mode and see if it leaks, also wriggle the connector on top of airbag whilst extended.
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 27th Jun 2020 5:23 am |
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Nedarb2
Member Since: 19 Jun 2020
Location: Canada
Posts: 23
  
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I had similar thoughts, but
-front left strut is brand new - one of the first things I replaced during this journey.
-pulling the fuse to deactivate eas results in no air loss. I’ve gone off-roading 2 days with the fuse pulled without loosing any height. If it was a crack or leak between the valve blocks and shocks this wouldn’t be affected by pulling the fuse.
Only loosing air when the system is active to me, logically, means the system is “working” to raise / lower /level the vehicle when it shouldn’t be OR valves are getting signals to open when the shouldn’t be (could be physical damage somewhere, chaffed wires, etc)
But I’m out of ideas at this point of time. Everything has been replaced with new that are the common problems.
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| 27th Jun 2020 5:42 am |
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Nedarb2
Member Since: 19 Jun 2020
Location: Canada
Posts: 23
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Also - not trying to beat a dead
Horse here but I’m trying not to over look anything. Could this all be caused by the vehicle never having the software updated from the hitachi to amk?
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| 27th Jun 2020 7:08 am |
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Globetrotter448
Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1782
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I thought you had the CCF updated. How wrong can one be.
Still think it is something on front left hand
Last edited by Globetrotter448 on 27th Jun 2020 8:07 am. Edited 1 time in total
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| 27th Jun 2020 8:06 am |
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Nedarb2
Member Since: 19 Jun 2020
Location: Canada
Posts: 23
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The vehicle came with an amk compressor. I can only assume it was updated.
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| 27th Jun 2020 8:07 am |
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Globetrotter448
Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1782
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Find someone with a tool to check
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| 27th Jun 2020 8:08 am |
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Sidestick
Member Since: 22 Apr 2012
Location: Rome
Posts: 2288
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Nedarb2 wrote:Also - not trying to beat a dead
Horse here but I’m trying not to over look anything. Could this all be caused by the vehicle never having the software updated from the hitachi to amk?
Nope, you should only experience the light up of the suspension fault on the dash with no other issue.
I continue to put attention to the front left height sensor, you said it goes out of scale during bumps, this is not normal... - Easy-Lift suspension module 4.0
- GoodWinch 9500 lb
- Full underbody protections
- Tree/Rock sidebars
- Prospeed roofrack & ladder
- Compressor guard
- Raised Air Intake
- Driving lights (2+4)
- 50 mm Waffle boards
- Altox Heater control
- Overland Rooftop Tent
- Rear seats entertainment
- Front & Rear camera
- GVIF
- Removable tow bar
- Cubby box fridge
- BFG KO2 265/65R17
- iidTool BT
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| 27th Jun 2020 6:56 pm |
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Nedarb2
Member Since: 19 Jun 2020
Location: Canada
Posts: 23
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I watched several height sensors and 3/4 of them would go out of range on bumps/side hill driving.
Maybe out of range is the wrong term... I’ll explain.
I’ve calibrated the suspension so it’s equal / even.
I am using lift rods but lowered the lift to about 1.5”.
I’m using the rsw 4Dcan software. I ordered a gap tool last night.
The “normal height” sensor reading is about 170-180 for all sensors. The max is 255 I think. So during articulation the sensors go over 255 and basically 256 = 1 so the reading starts climbing from 1 and during max articulation climbs to about 40 or 50. When through the rough stuff or side hill they go back to their normal range.
I don’t get a sensor error or code.
I don’t know if this is the 4Dcan showing me values or if thus is actually what the sensors are telling the truck.
But 3/4 can’t be wrong/broken and I’ve already replaced the front left one which goes “out of range”. If this is wrong - it would be a calibration issue BUT how would I lower the “normal flat ground” height readings by keeping the truck height the same ?
I even lowered to stock height and they still went over a 255 reading / “out of range”
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| 27th Jun 2020 7:43 pm |
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Sidestick
Member Since: 22 Apr 2012
Location: Rome
Posts: 2288
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Lift rods are the problem...
Height sensors have a range of duty with standard rods, if the travel of the sensor during articulation goes "over" the standard, the electric value from that sensor goes out of scale (of the suspension ecu).
Is not new that users with lift rods have had many problems while the car is gone "below" the access height for some reasons (this because the height sensors with lifting rods goes out of range at access height) and they were not able to raise the car to normal height due to suspension fault code stored on the ecu.
Now as soon the iidTool become available, with it you can check the right values from the sensors (position in mm and electrical 0,5 to 4,5 volt) and i bet that your front left sensor goes out of these range... - Easy-Lift suspension module 4.0
- GoodWinch 9500 lb
- Full underbody protections
- Tree/Rock sidebars
- Prospeed roofrack & ladder
- Compressor guard
- Raised Air Intake
- Driving lights (2+4)
- 50 mm Waffle boards
- Altox Heater control
- Overland Rooftop Tent
- Rear seats entertainment
- Front & Rear camera
- GVIF
- Removable tow bar
- Cubby box fridge
- BFG KO2 265/65R17
- iidTool BT
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| 27th Jun 2020 8:33 pm |
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Nedarb2
Member Since: 19 Jun 2020
Location: Canada
Posts: 23
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Thank you!
So what makes my truck so special then... alot of land rovers have lift rods for off roading and don’t get these problems... would lifting the truck using the iid tool and stock rods be ok?
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| 27th Jun 2020 8:57 pm |
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Sidestick
Member Since: 22 Apr 2012
Location: Rome
Posts: 2288
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I suppose that will be enough to make a new sensor calibration (with rods on) by the tool to get out of trouble.
You said you have shortened your rods, just double check that the front left is longer like the right one  - Easy-Lift suspension module 4.0
- GoodWinch 9500 lb
- Full underbody protections
- Tree/Rock sidebars
- Prospeed roofrack & ladder
- Compressor guard
- Raised Air Intake
- Driving lights (2+4)
- 50 mm Waffle boards
- Altox Heater control
- Overland Rooftop Tent
- Rear seats entertainment
- Front & Rear camera
- GVIF
- Removable tow bar
- Cubby box fridge
- BFG KO2 265/65R17
- iidTool BT
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| 27th Jun 2020 10:29 pm |
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Nedarb2
Member Since: 19 Jun 2020
Location: Canada
Posts: 23
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No I haven’t shortened the rods - i lowered the suspension After installing the rods using the 4Dcan software to try and get the sensor range at normal height more into the middle of the range so it wouldn’t go out of range on suspension articulation.
Something is telling the truck to consume and / or exhaust air very quickly. To my knowledge the truck shouldn’t be using air after it’s at its set height, just the cross link valve should be open so the front shocks share air back and forth and the same for the back.
I really don’t think this is a leak, but I could be wrong. Also don’t think it’s the compressor as it’s brand new and it replaced a low mileage newer amk, but it could be a bad compressor out of the box.
The question to me is what is telling it to use air, and is it an error (broken wire, for example) or is it right but out of calibration ie height sensor telling it the wheel is somewhere other than it should be.
If on a side hill, should the up hill shocks be exhausting air and the downhill filling with air, or should the air supply be off and the cross link open only? It seems to me a low wheel is being told to exhaust and the uphill is trying to be pumped up... frustrating and I’m sure this is going to end up being one thing somewhere that’s fixes it all but until then! :@
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| 27th Jun 2020 11:53 pm |
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Globetrotter448
Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1782
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If what you are saying is correct - maybe when you changed the front valve block you may have the pipes connected wrongly ie: left is where the right should connect and vise a versa.
It does help if you tell the whole story upfront
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| 28th Jun 2020 12:42 am |
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Nedarb2
Member Since: 19 Jun 2020
Location: Canada
Posts: 23
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Nope it’s plumbed right - if one corner is low it pumps up that one. Have also confirmed via. Valve block diagrams the correct lines are in the correct positions.
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| 28th Jun 2020 1:11 am |
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Nedarb2
Member Since: 19 Jun 2020
Location: Canada
Posts: 23
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Quick update. Went and parked on side hill. As I thought, truck does NOT want the suspension to articulate. It wants all wheels to be level. High ones are lowered and lowered ones are raised. Hence constant use of air. Does anyone know what tells the vehicle to do this? Suspension should be articulated on uneven surfaces, it shouldn’t be trying it make all wheels level on the 4x4 screen all the time....
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| 29th Jun 2020 5:42 am |
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