KDSS Stabilizer ECU location

[smithdm33]

Hi, I have a KDSS fault standing on my 2014 Land Cruiser ICON. The fault code in C1831 (Accumulator Solenoid Upside). During the last service, I asked the dealer to check this and they told me the suspension system is mechanically sound and they suspect the fault is electrical/wiring. Ive located the accumulator solenoid under the passenger side door and i have managed to check the cable connector - seems ok. I want tocheck the other end of the cable that goes to the stabilzer ECU but i am not sure where that is locations. Can anyone on this forum help me with that. 

 

thansks Mark

[flash22]

they are very prone to corrosion between the aluminium and the plastic housing

http://zatonevkredit.ru/repair_manuals/raw_content/RM0000000000IJO.xml

https://www.drive2.ru/o/b/619741929092982191/

[smithdm33]

thanks @flash22. the cover for the electrical connections shown in the 4th picture - how easy does that come off. I cant see how it is secured. should it pop off with some persuasion using a flat head screwdriver.

[smithdm33]

anyone know where i could get spare parts, even reconditioned ones for the KDSS accumulator solenoid.

[flash22]

it looks destructive ? start with a basic resistance test across the coils

on the black plastic cap it will have a part number something like

48006-60031

 

[smithdm33]

@flash22 ive read the procedure you sent me regarding the KDSS checks. To check the resistance of the harness I think i need to disconnect both end - at the ECU and at the accumulator. I have disconnected the end at the accumulator but i dont know where the ECU is located. Can you help and advise me where this is?

 

thanks , Mark

[flash22]

check the actual coils first

http://zatonevkredit.ru/repair_manuals/raw_content/AWHk8e_ZU9h2CeTmCtAs

http://zatonevkredit.ru/repair_manuals/raw_content/AWHk8eueBFyj9RK3f6aw

I assume its a J150 and not a J200 model

http://zatonevkredit.ru/repair_manuals/raw_content/AWHk8e0YrzlLPWuu6D9i

 

 

[smithdm33]

@flash22 I managed to get some readings on the coils. Was tricky to get a meter on to the pins but think I managed to get some reliable readings:

 

between pins 4-5 = 26 ohms

Between pins 4-6 = 4.3 ohms

does this point towards an issue with one of the solenoids?

Thanks Mark

[flash22]

26 ohms is right, 4.3 is way too low

[smithdm33]

@flash22thanks. Thats what i suspected. must be shorting to ground inside the housing assembly. I guess the next step is to remove this and open it up to check the condition inside as shown in the attachment below. Do you know if you can get spare reconditioned parts for this rather than the whole solenoid unit including hydraulics?

 

[flash22]

I have not come across any rebuild kits the solenoid and sensor look to be welded to the lines in that plastic housing, im not sure undoing the 3 torx screws will get you very far

[flash22]

had a look on Club Lexus and there is a large thread on kdss

links from one of the posts

https://www.clublexus.com/forums/gx-2nd-gen-2010-2023/919420-kdss-info-problems-discussion.html

 

A few other KDSS repair links

https://www.drive2.ru/l/533328011731140769/

https://www.drive2.ru/l/522632787249857612/ <<<<<< removed the coil and had them rewound

https://www.drive2.ru/o/b/473981321866117812/

https://www.drive2.ru/l/520337281848967212/

https://www.drive2.ru/l/523743293993911347/

https://www.drive2.ru/l/522235313796416010/

https://www.drive2.ru/b/466015085244974091/

https://www.drive2.ru/o/b/474414529447461760/

https://www.drive2.ru/l/477590743662199295/

https://www.drive2.ru/o/b/530297482807084861/

https://www.drive2.ru/o/b/551018604066242839/

https://www.drive2.ru/l/516851005355196463/

[smithdm33]

thanks @flash22. some good information there. That should give me some good ideas on how to progress.

 

On another note, I dont suppose you have the Aircon piping schematics for this land cruiser (2014 Land Cruiser ICON). I have a leak and want to try and identify the part.

[flash22]

there are plenty of online resources like Megazip or Amayama

[smithdm33]

perfect thanks

 

[smithdm33]

update on KDSS fault. I put a 22 ohm resistor across pins 4-6 on the wiring harness connector and this cleared the fault (C1831). Looks like the fault is with the solenoid coil inside the stabilizer unit. not an easy fix but at least the wiring between the ECU and the Stabiliser is ok.

[flash22]

The coil is behind the black cover this goes over the metal post what is the valve

if it's just corrosion, you may get away with popping that cap off to give it clean with a brush (acid brush or simlar) and give a good dose of contact cleaner

a 22 ohm resistor will be fine to get you through a MOT (warning lights on are a fail)

[smithdm33]

further update. Managed to get the cover off the terminations at the stabilizer unit. You can see the corrosion inside. 

[smithdm33]

after cleaning i could see it was the second from the left termination that had corroded off.

[smithdm33]

it was difficult to solder in situ so used some connectors to connect to coil pin and i managed to get a solder on pin 6. This has solved the problem. boxed up with lots of silicone to seal it back up and heavy duty tie wraps to secure the lid in place. not sure how long it will last but its sorted for now.

[flash22]

you can always revisit it at a later time

[smithdm33]

thanks for your help with this @flash22. really appreciated.

[stoker]

Hi @smithdm33 and @flash22. I've been reading through this article as I've just bought a 2010 Land Cruiser 150 LC5 with a KDSS warning light. I have tried to take apart the coil today, but was unaware that I have to cut the connectors and then resolder them, so I thought I'd research a bit more before attempting it.

I can't seem to access the photos posted by @smithdm33. I'd really appreciate if you could send them to me to get a better idea of how you did this. The threads in the russian forum always seem to skip the cutting and soldering section of the work.

Interestingly, I had only the C1831 code appear when I attempted the job, but after stopping, my diagnostics was showing the C1832 code as well. What could I have done to cause this new code to show up now?

Do you guys know if the corrosion in the coils are the main cause for these error codes, or could they be caused by something else?

Appreciate your advice!

[flash22]

see my the post above there are loads of pictures 9/10 times they are full of corrosion including the connector

Codes, one is for up and the other is the down solenoid