EDC III Info

[NikolaiKirov99]

Hello everyone,i want to ask if somebody has the EDC system and did anybody recycled already the shock absorbers,because when i drive,the front of the car just goes very soft,and the rear its like hard.Both sport and komfort working.For example if im on Comfort mode and got into a bump on the road and the front of the car just lifts a little bit and then just lifts down very quickly,its like a boat.Does this mean that i have to recycle the front 2 or all of them?And did anybody send them to Poland for recycling?The car is BMW E32 1992 730i V8
P.S..Sorry for bad english.

[shogun]

A lot of people did send the shocks to Nagengast in Poland for rebuilding them. EDCIII can be diagnosed with a good fault code reader, that would be the easiest to find the faults.
From some experience with friends cars in all cases a non functioning EDC III was the control module, they replaced it against a new - used one and problems were soved.

https://www.bimmerforums.com/forum/s...DC-doesnt-work
https://www.bimmerforums.com/forum/s...0il-E32-failed
https://www.bimmerforums.com/forum/s...l-gurus-needed!
https://www.bimmerforums.com/forum/s...just-like-that
http://www.bimmernut.com/forum/showt...t-gt-EDC-Plus?
http://bavariaclassics.com/bmw-parts...er=DESC&page=2

download this https://www.meeknet.co.uk/E38/Pdf/ED...air-manual.pdf
Diagnosis/Troubleshooting
The EDC III is connected to the diagnostic link. Any faults stored in memory can be read out with the Diagnostic Module. Troubleshooting is carried out as with other systems by following procedures listed on the service tester display screen and using the ETM and Diagnostic Manual. After connection to the Diagnostic Module the control unit identification is displayed, followed by the selection list.
1. Read defect code memory
2. Monitor status
3. Actuate components
4. Test procedure
5. Special functions
6. Test code
7. Clear defect code memory

System Monitoring
All operating cycles and sensor inputs are checked by the control unit for plausibility and function. Any faults that might occur are stored in a defect memory according to their priority. In the event of certain faults, the control unit selects the "medium" damping setting. The following faults will cause the control unit to select the medium setting:
· Steering angle sensor e.g. bent wiper in sensor (signals do no match; max. deviation 30°) or temporary signal disturbance
· Steering angle sensor e.g. contact difficulties, wiper on conductor of potentiometer, loose contact in connector
· Steering angle sensor e.g. broken locating pin (sensor always supplies same signal), steering angle sensor not fitted
Defect in road speed signal e.g. no V-signal in the case of break in wire to EKM
· Defect-vertical acceleration front axle e.g. signals not within working range (defective sensor)
· Defect-vertical acceleration rear axle e.g. signals not within working range (defective sensor)
· Defect-longitudinal acceleration e.g. signals not within working range (defective sensor)

If the soft solenoid valve circuit fails, the medium setting is selected.
If the medium solenoid valve circuit or control unit fails, the solenoids are de-engerized which results in the firm setting.

Note: In case of a system failure where the system goes into a firm setting, there is no visual warning to the driver of a system problem. The only indication is that the ride is firm at all times.