Disco 3 (LR3) Suspension problem (C1A03-1C...plus many more) solved

[WoodnotRust]

Many thanks to @gstuart whose post [https://www.landyzone.co.uk/land-rover/air-suspension-red-light-solved.384856/post-5500726] solved my nagging suspension problem. For those that don't like a long read, the problem was a loose pin in the connector C2559

It all started 3 weeks ago when my dash lit-up like while driving on a rough and rocky hill. The suspension, ABS, parking, parking break and transmission warning lights came on and would not go off. Fortunately, I was able to drive home normally, but my ride-height was off and eventually it dropped to the bump stops.

I have a GAP iid tool and got the following "permanent" faults: U0122-67, P0500-00, U0122-87, C1A68-1C, C1A03-1C, U0421-68, C1A92-13 and finally C1A93-13. There were other temp faults too...
I narrowed this down to the left front ride-height sensor [fault C1A03-1C] and found it had 0Volts. Problems could be in the sensor, the module or the wiring it seemed. I was in a hurry to fix my car, so I quickly ordered a LF ride level sensor and installed it. Problem not fixed. I read where the 1 and 5 pins were switched on some cheap Chinese sensors (like the one I bought), so switched the pins. Problem not fixed. I left my car at a local mechanic with a wiring diagram and instructions to check the voltage on Pin 14 of the module. He said there was 0 volts coming out of the module, so I bought a used version of the Air Supsension Module. Problem not fixed.

Everyone says the parking brake switch is a problem, and because it is an easy job, I replaced that. Problem not fixed.

On the drive up the mountain I spilled some tea and water onto the center console where the HDC switch is located. It wasn't logically the issue based on fault codes, but it made me wonder. I found a nice used version that came with all switches (parking brake switch too), so I replaced the center console. Problem not fixed.

Finally, with the help of the Landyzone I found links to the wiring diagrams and came across Mr. Stuart's post showing the C2560/2559 connector behind the left wheel arch. This is where the wiring from the front control valves intersect the ride level sensor wiring going to the module. The problem was a loose pin in the connector C2559.

This is where a little patience, a voltmeter and a wiring diagram could have saved a lot of money. In the end it was thanks to a picture by Mr. Stuart that broke the case.

 

[lynall]

Many thanks to @gstuart whose post [https://www.landyzone.co.uk/land-rover/air-suspension-red-light-solved.384856/post-5500726] solved my nagging suspension problem. For those that don't like a long read, the problem was a loose pin in the connector C2559

It all started 3 weeks ago when my dash lit-up like while driving on a rough and rocky hill. The suspension, ABS, parking, parking break and transmission warning lights came on and would not go off. Fortunately, I was able to drive home normally, but my ride-height was off and eventually it dropped to the bump stops.

I have a GAP iid tool and got the following "permanent" faults: U0122-67, P0500-00, U0122-87, C1A68-1C, C1A03-1C, U0421-68, C1A92-13 and finally C1A93-13. There were other temp faults too...
I narrowed this down to the left front ride-height sensor [fault C1A03-1C] and found it had 0Volts. Problems could be in the sensor, the module or the wiring it seemed. I was in a hurry to fix my car, so I quickly ordered a LF ride level sensor and installed it. Problem not fixed. I read where the 1 and 5 pins were switched on some cheap Chinese sensors (like the one I bought), so switched the pins. Problem not fixed. I left my car at a local mechanic with a wiring diagram and instructions to check the voltage on Pin 14 of the module. He said there was 0 volts coming out of the module, so I bought a used version of the Air Supsension Module. Problem not fixed.

Everyone says the parking brake switch is a problem, and because it is an easy job, I replaced that. Problem not fixed.

On the drive up the mountain I spilled some tea and water onto the center console where the HDC switch is located. It wasn't logically the issue based on fault codes, but it made me wonder. I found a nice used version that came with all switches (parking brake switch too), so I replaced the center console. Problem not fixed.

Finally, with the help of the Landyzone I found links to the wiring diagrams and came across Mr. Stuart's post showing the C2560/2559 connector behind the left wheel arch. This is where the wiring from the front control valves intersect the ride level sensor wiring going to the module. The problem was a loose pin in the connector C2559.

This is where a little patience, a voltmeter and a wiring diagram could have saved a lot of money. In the end it was thanks to a picture by Mr. Stuart that broke the case.

Reading that will make Gary a happy bunny, what you reckon @gstuart?

 

[gstuart]

Many thanks to @gstuart whose post [https://www.landyzone.co.uk/land-rover/air-suspension-red-light-solved.384856/post-5500726] solved my nagging suspension problem. For those that don't like a long read, the problem was a loose pin in the connector C2559

It all started 3 weeks ago when my dash lit-up like while driving on a rough and rocky hill. The suspension, ABS, parking, parking break and transmission warning lights came on and would not go off. Fortunately, I was able to drive home normally, but my ride-height was off and eventually it dropped to the bump stops.

I have a GAP iid tool and got the following "permanent" faults: U0122-67, P0500-00, U0122-87, C1A68-1C, C1A03-1C, U0421-68, C1A92-13 and finally C1A93-13. There were other temp faults too...
I narrowed this down to the left front ride-height sensor [fault C1A03-1C] and found it had 0Volts. Problems could be in the sensor, the module or the wiring it seemed. I was in a hurry to fix my car, so I quickly ordered a LF ride level sensor and installed it. Problem not fixed. I read where the 1 and 5 pins were switched on some cheap Chinese sensors (like the one I bought), so switched the pins. Problem not fixed. I left my car at a local mechanic with a wiring diagram and instructions to check the voltage on Pin 14 of the module. He said there was 0 volts coming out of the module, so I bought a used version of the Air Supsension Module. Problem not fixed.

Everyone says the parking brake switch is a problem, and because it is an easy job, I replaced that. Problem not fixed.

On the drive up the mountain I spilled some tea and water onto the center console where the HDC switch is located. It wasn't logically the issue based on fault codes, but it made me wonder. I found a nice used version that came with all switches (parking brake switch too), so I replaced the center console. Problem not fixed.

Finally, with the help of the Landyzone I found links to the wiring diagrams and came across Mr. Stuart's post showing the C2560/2559 connector behind the left wheel arch. This is where the wiring from the front control valves intersect the ride level sensor wiring going to the module. The problem was a loose pin in the connector C2559.

This is where a little patience, a voltmeter and a wiring diagram could have saved a lot of money. In the end it was thanks to a picture by Mr. Stuart that broke the case.

Oh wow , what an incredible compliment, thk u so much for the very words along with sharing with us what ur fault and fix was

Am over the moon the thread helped but of course is always a team effort

Thks again and really made my day and also really pleased ur now up and running

 

[gstuart]

Reading that will make Gary a happy bunny, what you reckon @gstuart?

Indeed it’s really made my day , so nice being able to share what I learnt from when I stripped all my air suspension down

So nice when members come back to say a simple thank u which goes along way, not forgetting it’s always a team effort

Wow , just wow as that’s really made me smile

 

[lynall]

Indeed it’s really made my day , so nice being able to share what I learnt from when I stripped all my air suspension down

So nice when members come back to say a simple thank u which goes along way, not forgetting it’s always a team effort

Wow , just wow as that’s really made me smile

I knew it would cheer you up, nice not to be forgotten, I have always told the younguns at work when you pass on knowledge that you learnt off of some old fart always say where you learnt it from, as that will make the old fart happy even if he is dead!
I am always saying if you do it this way it is easier/quicker, and so and so taught me that x amount of years ago.

 

[gstuart]

I knew it would cheer you up, nice not to be forgotten, I have always told the younguns at work when you pass on knowledge that you learnt off of some old fart always say where you learnt it from, as that will make the old fart happy even if he is dead!
I am always saying if you do it this way it is easier/quicker, and so and so taught me that x amount of years ago.

Plus 1 as funny enough also taught the apprentice’s at work a simple appreciation along with most of all good manners as a simple plse and thk u goes along way these days

When I was an apprentice my senior fitter was an ex para , I was responsible for ensuring I got his tea was ready and hot for when he first came onto site

Along with all the tools laid out ready , dust sheets down if within a home , of course was t required on site

Then his tea at morning , lunch and afternoon break , end of the day had to ensure all of the tools were cleaned and put away

Don’t mind admitting really didn’t like the guy but thanked him in my later years as put me into good stead of a tood work ethic , was very easy being able to walk into new jobs

Sorry as I’m waffling as per usual , lol just a breath of fresh air when a newbie not only reports back of the fix but says thk u which these days seems to happen less often