E39 Tasonsäätö

[JonasG]

Ei auta tuossa tapauksessa jos kerran vikailmo tulee ruutuun heti virrat päälle käännettyäsi. Jos venttiilit jumisivat, vikailmo tulisi vasta puolen minuutin päästä kun pumppaus ei ollut auttanut. Jos vikailmoitus tulee välittömästi, vika on ohjauspuolella/antureissa/moottorissa.

Millä ohjelmalla vikakoodit luettiin?

BMW INPA ohjelmalla, mitään vikaa ei antanut tasonsäädöstä..:think

[exautisti]

Tietää että talvi koittaa kun E39:sini tasonsäätö ilmoittaa aamuisin "selflevel susp inact". Tänään alkoi taas siis talvi täälläpäin, tuo ilmoitus pysyikin koko kesän poissa.

Ostin pullon paineilmajarrujen jäänestoa ja purin systeemin jälleen. Nyt päätin yrittää purkaa kuivaimenkin ja onnistuihan se! Nyt on kuivainaine (pieniä kuulia muutama desi) pakasterasiassa ja mietin miten sen kuivaisin. Mikrossa?

Systeemi oli läpimärkä. Kuivainainekin oli täynnä vesipisaroita.

liekkö tuohon kävis scania malliset kuivaimen rakeet? pussillisella rakeita huoltais koko kylän kuivaimet.
täytyy ruveta vissin ihan mielenkiinnosta huoltamaan tuo kuivain vaikka se vielä pelaakin.
siitä alimitoituksesta olen kyllä eri mieltä sillä oli ne ilmajarrut,jousitus tai mikä tahansa niin kyllä ne kuivaimet täytyy huoltaa aina joskus.

Ja moonshine eikö se sinun priima kuntoinen kompura tarvitse ollenkaan toimivaa kuivaajaa??

[-Tapi]

BMW INPA ohjelmalla, mitään vikaa ei antanut tasonsäädöstä..:think

INPAlla voi muistaakseni laittaa perän jopa kuljetuskuntoon, eli kannattaa sukeltaa ohjelmassa syvemmälle ja kokeilla mitä -Chassis..-1 axle air suspension EHC.. valikon alta löytyy. Muistelen että siellä on paljonkin tilatietoa näkyvillä. Anturitkin voi tsekata varmaan tuosta.

[JonasG]

Bemarnisti tule käymään niin tarkistetaan tuo tasonsäätö erikseen kokonaan. Kiitoksia taas Tapille.

[Dunky]

INPAlla voi muistaakseni laittaa perän jopa kuljetuskuntoon, eli kannattaa sukeltaa ohjelmassa syvemmälle ja kokeilla mitä -Chassis..-1 axle air suspension EHC.. valikon alta löytyy. Muistelen että siellä on paljonkin tilatietoa näkyvillä. Anturitkin voi tsekata varmaan tuosta.

Juuri näin

[Bemarnisti]

Bemarnisti tule käymään niin tarkistetaan tuo tasonsäätö erikseen kokonaan. Kiitoksia taas Tapille.

Jebaa.. ootko huomenissa kotosalla tossa 3-4 aikaan? jos raahan tuon mopon sinne??:think

[JonasG]

Jebaa.. ootko huomenissa kotosalla tossa 3-4 aikaan? jos raahan tuon mopon sinne??:think

Pääsen töistä kl.17 eli kl.18 olisin vapaa. Soittele!

[Bemarnisti]

Pääsen töistä kl.17 eli kl.18 olisin vapaa. Soittele!

jup.onnistuuko vielä se laatikon nollaus?

[janppi]

e39 tasonsäädön toiminta

Netistä löytynyttä tarinaa tasonsäädön toiminnasta:

REAR SUSPENSION SYSTEMS

The standard rear suspension of the 528i sport wagon follows the design characteristics of the four link elasto kinematic system of the E38/E39 sedan vehicles.

The main design difference is the separation of the coil springs and dampers.

• The coil springs are positioned between the perches of the wheel carriers and the underside of the rear floor pan.
• The shock absorbers are positioned diagonally between the lower lateral control arm and the rear axle sub frame.

This configuration provides the wide, uniform load space in the cargo area.

Since the shock absorbers are now mounted directly to the sub
frame, the sport wagon requires unique sub frame hydro mounts.
The hydro mounts contain a fluid that helps to suppress road/suspension noise and vibrations from transmitting into the vehicle body.

The hydro mounts require new special tools for removal and
replacement. See E39 sport wagon special tools section on page 96.

ELECTRONIC HEIGHT CONTROL (EHC) AIR SUSPENSION SYSTEM OVERVIEW

The self-leveling air suspension system is being introduced on US market E39 sport wagon vehicles.

The mechanical design is identical to the standard 528i rear suspension however the coil springs are replaced by air cushion springs. The air pressure in the air springs is managed by the EHC system which automatically controls the ride height under all operating conditions. 91

OVERVIEW OF EHC CONTROL SYSTEM

The control philosophy of EHC is to "Initiate a control sequence only when necessary". The system offers the following advantages:
• The control system operates independently from the vehicle’s engine (no engine driven hydraulic pump system as per previous self leveling systems).
• Individual control of the rear wheels is possible
• An uneven load is identified and compensated for
• Uneven road surfaces are identified and not compensated for
• Automatic control is interrupted when cornering
• The system is diagnosable using the DIS or MoDiC

The air suspension system consists of the following components:

EHC SYSTEM COMPONENTS CONTROL MODULE

The Control Module is mounted in the module carrier box in the luggage compartment on the right side. It contains the processing electronics and final stages for operation of the EHC system.
The control module receives the following inputs for its processing functions:

• KL 30 & 31 (Power/Ground)
• KL 15
• Left & Right Ride Height Sensors
• K Bus for;
- Vehicle speed
- Engine running
- Door/tailgate - open/closed

The control module incorporates two filters (slow/rapid) for processing the input signals from the ride height sensors. Depending on the operating mode, either the slow or rapid filter is used to check the need for a regulating sequence.

The slow filter is used during the normal operation mode to prevent normal suspension travel from causing the system to make adjustments.
The rapid filter is used during the pre-run and tailgate (LID) modes to ensure that the suspension is adjusted quickly while the vehicle is being loaded or checked prior to operation.

E39 Features 06 EHC CONTROL MODULE

AIR SPRINGS

The air spring is made from a flexible rubber material. It forms an air tight cavity which provides the calculated spring rate required for the sport wagon. As the spring compresses downward the bottom edge of the rubber material rolls along the vertical surface of the base mount cylinder.

Air is added or removed from the air spring through its top port. The top port of each spring is connected to a reservoir and the air supply pipes. The reservoirs are required to hold additional air due to the compact design of the springs.

REAR AXLE LEVEL SENSORS

Hall effect sensors are mounted on the left and right sides of the rear suspension for ride height detection. They are pivoted by a coupling rod through the rear axle swing arms.

The hall sensors produce a varying voltage input to the control module as the suspension height changes.

If the vehicle is equipped with Xenon headlights the right side sensor contains an additional sensor for the automatic head E39 Features 07 light level adjustment system.

WARNING DISPLAYS

If the system is faulted and off-line or set in the transport mode, the following is displayed:

Basic Cluster: A warning lamp indicator is illuminated used on the basic cluster.

High Cluster: A message is posted in the high cluster matrix display.

AIR SUPPLY SYSTEM (LVA)

The air supply system is identified as the LVA in the diagnosis program and in the repair manual. It is mounted in the spare tire well compartment. The components are housed in a sound deadening carrier, through rubber bushings, to prevent operating noises from being transmitted through the vehicle’s interior.

With the exception of the compressor relay, individual replacement parts for the air supply system are not available. If diagnosis determines a defect in any of the other air system components, complete replacement is necessary.

The air supply system consists of the following components:

• Compressor assembly with;
- Piston compressor
- Electric motor
- Air dryer (desiccator)
- Pressure relief solenoid valve
- Pressure maintenance valve
- Check valves
• Compressor Relay (Replaceable)
• Solenoid Valve Block (2 - two way
valves)
• Lines - including distributor block

[janppi]

e39 tasonsäätö

Netistä löytynyttä tarinaa tasonsäädön toiminnasta, osa 2:

E39 Features 05

AIR SUPPLY SYSTEM (LVA) OPERATION

The single stage piston compressor produces a maximum pressure of 13.5 Bar. The compressor is maintenance free - provided it is used in a dust free environment. This includes the compressor’s intake air filter.

The compressor is driven by a DC motor that is controlled by the compressor relay through the control module.

When the compressor is activated, the pressure builds up to a working pressure of 11.4 Bar (+0.8/-1.5 Bar). This is controlled through the pressure maintenance valve. The airunder pressure is fed through the dryer and check valve to the solenoid valve block for the air springs.

There is one solenoid valve in the valve block for each air strut. This allows the system to compensate for uneven loads in the vehicle and maintain the vehicles ride height at all times.

Pressure is drained through the left or right solenoid valve (energized open) the pressure relief solenoid valve, restricter, check valve and dryer back to the inlet side of the compressor pump.

EHC SYSTEM OPERATION

A fully functional EHC system is controlled by one of three different modes of operation. The operation mode is selected by the control module based on current conditions provided by the monitored input signals. The main modes of operation are:

• Pre-Run/Post-Run Mode
• Normal Mode
• Tailgate Mode

Two special operating modes are also included in the control module programming.

• New/replacement mode (pre ZCS encoded). This mode provides basic operation.
• Transport Mode - Transport mode is set at the factory and raises the vehicle 30mm to prevent vehicle damage during transportation. It must be deactivated with the DIS/ MoDiC prior to customer delivery.

PRE-RUN/POST-RUN MODE

The Pre-Run mode is activated when the vehicle is parked and the control module is in the sleep mode. Opening a door or the tailgate initiates a system wake up and the control module comes on-line.

The control module performs a self-check of the control electronics and sensors. If no fault is found, the system will check the ride height and institute a rapid regulation if the height varies by more than 40mm.

NORMAL MODE OPERATION

Once the rear lid is closed, KL 15 switched ON and the engine started, the system switches into the normal operation mode. In the normal mode, the control module will constantly monitor the input signals from the ride height sensors and will activate a correction if the ride height deviates by at least 10mm.

TAILGATE OPERATING MODE

The tailgate operating mode is activated if the gate is opened with KL - 15 On and the engine running. The difference between this mode and the normal operating mode is the response time is rapid instead of slow .

SPECIAL OPERATING MODES

• ASSEMBLY LINE MODE (New control module)

The assembly line mode refers to control module manufacturing. New control modules are stored in a deactivated state. The control programming is not active and must first be ZCS encoded.

After installing a replacement control module, it must be coded using the DIS or MoDiC. The instrument cluster fault display will remain illuminated until the control module is coded.

• TRANSPORT MODE

The vehicle rolls off the factory assembly line with the EHC control module in the transport mode. The transport mode inflates the air springs to a higher position (approx. 30mm higher) than the normal mode in order to avoid damage during transit.

The system will not respond to any inputs that would alter the height of the vehicle. The fault indicator (base cluster) is illuminated or instrument cluster matrix display (high cluster) provides the message “Leveling System” to draw attention to the transport mode setting.

The Service Functions section of the diagnosis program is used to activate/deactivate the transport mode. Once the transport mode is deactivated, check the vehicle Ride Height Offset making sure the vehicle rear axle height is to specification.

CONTROL INTERRUPTS

CORNERING

To prevent unnecessary suspension adjustments while driving through corners, a “control interrupt” is built into the system. Above 30MPH the control module monitors the left/right ride height sensors for a difference of 30mm. Exceeding this difference will put the system into a control interrupt and no adjustment will take place. The control interrupt last for a duration of 5 minutes.

VEHICLE LIFTING

The ride height control is interrupted when the vehicle is raised on a lift or with a jack. The system monitors the ride height sensor inputs and when the height limit of 90 mm is exceeded, the control is switched OFF until the vehicle is lowered again.

EHC SERVICE INFORMATION
DIAGNOSIS/CODING

• The EHC control module is connected to the diagnostic link. The EHC control module activates the fault display in the instrument cluster to alert the operator of the off-line status of the system. The EHC control module stores up to three electrical/electronic faults.
• Diagnosis/troubleshooting of EHC is carried out using the fault symptom troubleshooting program of the MoDiC or DIS. The EHC system has an extensive diagnosis program.
• Replacement control modules are shipped in the factory mode. The control modules must be ZCS encoded using the DIS or MoDiC to activate the operating parameters.

DIS/MODIC SERVICE FUNCTIONS PROGRAM

The Service Functions program of the DIS/MoDiC provides the Transport Mode activation/deactivation and Ride Height Offset functions (see next page). Once the transport mode has been released, or if the system requires left to right side height adjustment, the ride height "OFFSET" must be carried out to ensure that the vehicles suspension has a base ride height level starting point. The "HEIGHT OFFSET" is adjusted using the DIS or MoDiC. The procedure is as follows:

• Place the vehicle on a level surface unloaded.
• Access the Height Offset program in the service function menu.
• Measure the base ride height from the lower edge of the wheel housing to the center of the wheel hub.
• Check measured height against the specifications listed
• Use the DIS/MoDiC to correct the ride height if the value differs from the listed specification.

[JonasG]

Bemarnistin auton tasonsäätöä on nyt luettu ja mitään vikakoodia se ei anna.
Kun yrittää suoraan kytkeä päälle lastausmoodia niin mitään ei tapahdu,kompura ei inahdakkaan..Auto on kuitenkin normaalilla korkeudella mutta herjaa tasonsäädöstä jatkuvasti,mitä kannattaisi seuraavaksi kokeilla?

[-Tapi]

Mitäs jos tasonsäädön kompuran käyttöpiuhan ottaa irti, herjaako mitään erityistä sen jälkeen INPA:ssa vai jatkuuko sama? Sitten voi tietysti irrottaa ohjausboksiltakin johtoja (en muista missä liitokset olivat) ja kokeilla muuttuuko herja missään vaiheessa. Jos ei muutu, niin on kyllä ihme vikatila..

[humala]

Tätä topikkia lueskeltuani kysyisin kun omasta tuo palje on puhjennut niin miten uuden asennus?? Kotikonstein varmaan onnistuu mutta tarvinneeko käyttää ohjelmoitavana liikkeessä?? Puhuivat liikkeestä että pitäis ohjelmallisesti käyttää perää ääriasennoissaan asennuksen jälkeen?

kyseessä tuo sigun mukainen tuurinki

[-Tapi]

Puhuivat liikkeestä että pitäis ohjelmallisesti käyttää perää ääriasennoissaan asennuksen jälkeen?

Oudolta kuulostaa. Se kompura kun täyttää palkeen joka tapauksessa asentoanturin tiedon mukaan. Ei kai ääriasennoissa käyttäminen mihinkään auta muuten kuin että näkee toimiiko palje.. Ja voihan sen itse käyttää ääriasennoissa vaikka testeri/ohjelma puuttuukin, eli ilman virtoja ilmat pihalle ja sitten virrat taas kiinni (akkuun/boksiin), jolloin perä nousee normaalikorkeuteen. Normaalia korkeammalle jos haluaa, niin asentoanturia huijaamalla sekin onnistuu.

[humala]

jahas...hyvä homma taidan vain hakea sen palkeen liikkeestä ja tuumata että pitäkää tunkkinne prkl...tuokin taitaa olla 3 viikon päästä kun jo yli viikon saanu sitä paljetta ootella.. Saisko nuit palkeita tilattua muualtakin? vai onko pakko olla marmoritiski, joka vetää välistä taas kerran... ?