D4 Air Suspension

[rhinosm]

I've noticed the car looking a little lop sided yesterday.
So I measured from the concrete to wheel arch on all 4 wheels.
Passenger side is sitting 20mm lower front & back than driver side.
I haven't investigated fully yet but any thoughts would be appreciated.

[Graeme]

It would be prudent to fit the Llams loop-back plug to remove its signal processing from the system so that correct diagnosis of the cause can occur. Perhaps 1 height sensor is causing the whole side to be higher or lower than it should be.

[rhinosm]

It would be prudent to fit the Llams loop-back plug to remove its signal processing from the system so that correct diagnosis of the cause can occur. Perhaps 1 height sensor is causing the whole side to be higher or lower than it should be.
Hi Graeme
I don't quite understand what you mean by, "to fit the Llams loop-back plug".
Vin

[l00kin4]

The loopback plug effectively removes the LLAMS module from interacting with the car's electronics.

So you unplug the wiring loom from the (black box) module and plug the loopback plug into the plug you just removed from the module. See pic

136646

David

[Graeme]

Attach the loop-back plug to the Llams loom instead of the black box (module) to exclude Llams electronics.

[DiscoJeffster]

Does the OP have LLAMS?

[l00kin4]

Does the OP have LLAMS?

OP rhinosm signature:
2016 SDV6SE D4
Mitch Hitch, Llams, IID Tool, Traxide, Tow Pro, GME UHF,
Rhino Traddie Rack, 19" Duratracs, ARB Bull Bar, Runva 11XP, APT Sliders

[smilebigeye]

[DiscoJeffster]

Ah can’t see that from Tap. Soz

[rhinosm]

So I should have the loop back plug? I best have a good look.
Vin

[Graeme]

Yes, you should have one but if not then PM me your address and I'll send you one.

[rhinosm]

Vehicle went for service today.
Reported the problem MLR service dept.
Report back is driver side front height sensor faulty, so that wheel is sitting 20mm higher than the other side.
Need parts so should be done Monday.

I was give a RR Sport as a loner for the day.
I ask if a D5 was possible.
They found one for me and I changed over this afternoon.
So I have a D5 to drive over weekend.

[rhinosm]

So I made up a loop back plug thanks to Graeme's instructions.
Worked a treat.

Final report from LR.
Driver side height sensor faulty.
On replacement they notice passenger side still low.
On inspection, height sensor not working.
Further inspection found Top Control Arm bent 90 deg.
Nearly touching shocker.

I ended up driving D5 for 5 days whilst waiting on parts etc.
Expensive service with new front discs and pads, front suspension bits etc.

Very happy to be back in D4

I suspect damage was done last July playing on Big Red.
I did hit a pot hole hard at the base.
I have since found a cracked alloy wheel.

Cheers

[NavyDiver]

Vtwinmad
Hi
Hi all I registered with aulro last year but I haven’t had much trouble with my D4 until recently
Ive had a recurring suspension fault code pop up. I can’t post this in the disco 3/4 section I don’t know how to
I live in gympie and the local LD guy here replaced the compressor as it showed a fault and the fault showed again so he replaced the rear valve body and it still did it so he downloaded new software as mine looks like it originally had a hitachi and previous owner had it replaced with a no name brand and now it has a AMK now the fault is coming up more often
U2000-67 (6C) motor temperature - algorithm based failure - signal incorrect after the event
C1A13-64 (AF) pressure does not decrease when venting gallery - algorithm based failure- signal plausibility failure
The first one comes up again and again after I clear the Codes with my IIDControl
regards
sean

https://www.aulro.com/afvb/members/78518.html

[geoffmc]

Hi Navy,

I have had the same code C1A13-64 for the past 8 months and haven't been able to find the issue, so will be interested to see what the outcome is.

cheers
Geoff


Vtwinmad
Hi
Hi all I registered with aulro last year but I haven’t had much trouble with my D4 until recently
Ive had a recurring suspension fault code pop up. I can’t post this in the disco 3/4 section I don’t know how to
I live in gympie and the local LD guy here replaced the compressor as it showed a fault and the fault showed again so he replaced the rear valve body and it still did it so he downloaded new software as mine looks like it originally had a hitachi and previous owner had it replaced with a no name brand and now it has a AMK now the fault is coming up more often
U2000-67 (6C) motor temperature - algorithm based failure - signal incorrect after the event
C1A13-64 (AF) pressure does not decrease when venting gallery - algorithm based failure- signal plausibility failure
The first one comes up again and again after I clear the Codes with my IIDControl
regards
sean

https://www.aulro.com/afvb/members/78518.html

[letherm]

Hi.

This is from the workshop manual.

All Greek to me but hope it helps.

Regards,
Martin

DTC
C1A13-
64

Description
Pressure Does
Not Decrease
When Venting
Gallery - Signal
plausibility failure

Possible Causes
Exhaust valve stuck
closed
Gallery pipe
blocked/damaged/crushed
Air suspension exhaust
silencer blocked/restricted

Action
Using the manufacturer approved diagnostic
system, test the operation of the exhaust
valve (vehicle ride height interface)
Check the gallery pipe for
blockages/damage/crushing
Check the air suspension exhaust silencer for
blockages/restrictions


DTC
U2000-
67


Description
Motor
Temperature -
Signal incorrect
after event

Possible Causes
NOTE: Circuit reference
MOT_TEMP_SIG /
MOT_TEMP_GND


Suspension air supply
unit temperature sensor
circuit open circuit

Suspension air supply
unit not operating when
demanded

Action
Refer to the electrical circuit diagrams and
check the suspension air supply unit
temperature sensor circuit for open circuit,
high resistance

Refer to the electrical circuit diagrams and
check the suspension air supply unit circuit
for open circuit, high resistance

[Eric SDV6SE]

If originally fitted with a hitachi and you replave with an AMK, you need to tell thr car via software update, others on here know much more about that than me. Was the compressor replaced with a new one or s/h? Would pay to check or have your mechanic check the dessicant drier as these block over time as the dessicant loses its ability to soak up moisture, turns to dust and ends up blocking the system - note the exhaust valve blocked error.

Note the Hitachi units are fully rebuildable, the rebuild kits are around 150 aud and include a new drier cover out of aluminium, as the plastic ones crack and leak, so that the compressor works overtime to keep pressure up, the motor then overheats and the thermistor (temp sensor) in the motor trips it to avoid cooking the motor windings.

Dont know about the AMK apart that there are cheapo knock offs that are not lasting anywhere near as long as the OEM should.

Also check all the airlines from the compressor to the tank and tank to valve blocks, the lines can get hard and brittle over time.

Hope this helps.