Weird air suspension problem.
#11
09-14-2018, 10:40 PM
MixManSC's advice is very good, the Tech2 is very useful and worth the minimal investment.
The AS system is very useful despite the occasional issues so I agree with you, worth keeping. However it is VERY sophisticated and would be difficult to replicate any other way. For example the electronics provides:-
The AS system is very useful despite the occasional issues so I agree with you, worth keeping. However it is VERY sophisticated and would be difficult to replicate any other way. For example the electronics provides:-
- Air-Pressure measurement (PSI)
- Inlet & Exhaust Valve control with individual current measuremt
- Battery Voltage measurement
- Ignition "On" Detection
- Compressor Over-Temperature detection
- Dash Extended Ride-Height Switch and Lamp control (doors must be closed to activate!)
- Left & Right Ride-Height sensor voltage measurement 0-5V, 2.5V = nominal height approx., voltage increasure with ride-height
- Left & Right Ride-Height current measurement
- 5V Supply On/Off control (turns sensors off)
- Tyre Inflator control
- Experience indicates ride-height sensors can be changed without re-calibration.
- EEProm storage of ride height calibration etc.
- Communications to BCU
#12
09-15-2018, 08:21 AM
My AS Controller died (very expensive here in UK) so I un-potted it, drew out its electronic circuit and repaired it, pretty-much learnt everything about it.
There is more than one type of controller, mine was a GM 1036984 (00131A-EP-02) now superceeded by GM89060585.
Some units have a single compressor (earlier ones) mine was the twin type.
I also completely dismantled and repaired the twin air control valve unit which was pretty coroded and messy inside, possible another source of air-leaks especially if air-bags are OK.
As the H2's ages it was important to get to grips with the AS Units to help others, so this was a start start.
There is more than one type of controller, mine was a GM 1036984 (00131A-EP-02) now superceeded by GM89060585.
Some units have a single compressor (earlier ones) mine was the twin type.
I also completely dismantled and repaired the twin air control valve unit which was pretty coroded and messy inside, possible another source of air-leaks especially if air-bags are OK.
As the H2's ages it was important to get to grips with the AS Units to help others, so this was a start start.
#13
09-15-2018, 10:16 AM
My AS Controller died (very expensive here in UK) so I un-potted it, drew out its electronic circuit and repaired it, pretty-much learnt everything about it.
There is more than one type of controller, mine was a GM 1036984 (00131A-EP-02) now superceeded by GM89060585.
Some units have a single compressor (earlier ones) mine was the twin type.
I also completely dismantled and repaired the twin air control valve unit which was pretty coroded and messy inside, possible another source of air-leaks especially if air-bags are OK.
As the H2's ages it was important to get to grips with the AS Units to help others, so this was a start start.
There is more than one type of controller, mine was a GM 1036984 (00131A-EP-02) now superceeded by GM89060585.
Some units have a single compressor (earlier ones) mine was the twin type.
I also completely dismantled and repaired the twin air control valve unit which was pretty coroded and messy inside, possible another source of air-leaks especially if air-bags are OK.
As the H2's ages it was important to get to grips with the AS Units to help others, so this was a start start.
Nice Work... I printed that out..good to have... I have an 2009 with Dual Comps...
Thank You
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