WoodnotRust
New Member
- Posts
- 2
- Location
- New Mexico, USA
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.
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.
