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LIN-BUS - eroare


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Va salut.

 

F11 2011 520d 

Am facut o diagnoza cu ISTA si am eroarea asta: 28CC00 - "LIN bus communication". Daca citesc erorile cu Bimmerlink imi zice: "Lin bus, communication: control unit has switched itself off from the bus (bus off)". Asta e singura eroare de pe masina...

Ma gandeam ca poate e releul de bujii pentru ca de cand a aparut eroarea, dimineata masina porneste uneori balbait putin, timp de 2 3 secunde, si scoate un puf de fum alb. Am testat totusi cu un alt releu, dar eroarea persista...

S a mai lovit cineva de eroarea asta? Sau are cineva vreo sugestie?

 

Mersi!

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4 hours ago, Sofrone Ionut said:

Va salut.

 

F11 2011 520d 

Am facut o diagnoza cu ISTA si am eroarea asta: 28CC00 - "LIN bus communication". Daca citesc erorile cu Bimmerlink imi zice: "Lin bus, communication: control unit has switched itself off from the bus (bus off)". Asta e singura eroare de pe masina...

Ma gandeam ca poate e releul de bujii pentru ca de cand a aparut eroarea, dimineata masina porneste uneori balbait putin, timp de 2 3 secunde, si scoate un puf de fum alb. Am testat totusi cu un alt releu, dar eroarea persista...

S a mai lovit cineva de eroarea asta? Sau are cineva vreo sugestie?

 

Mersi!

Salut, cred ca releul de bujii scoate alt cod.

 Error 28CC00 LIN Bus: Communication error. Diagnosis monitors LIN/BSD bus communication.
The error is detected when communication between all bus users is not possible.
Service plan....
- Disconnect bus users one by one. Error memory reading. If the fault is not currently present, a disconnected user/partial wiring harness causes a bus failure. At least one user must always stay connected; otherwise the error will be re-entered.
- Check the bus user's supply voltage.
- Check the wiring harness between the DME and the trunk user. For this, all bus users must be disconnected.
- Replace bus user

E o chestie de verificare mai amanuntita, daca dai click pe eroare in Ista nu te indruma pas cu pas ce sa deconectezi si sa masori?

Ar fi nevoie si de un osciloscop cred ca sa vezi comunicatia de pe bus....

Bafta.

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12 hours ago, Ali said:

Salut, cred ca releul de bujii scoate alt cod.

 Error 28CC00 LIN Bus: Communication error. Diagnosis monitors LIN/BSD bus communication.
The error is detected when communication between all bus users is not possible.
Service plan....
- Disconnect bus users one by one. Error memory reading. If the fault is not currently present, a disconnected user/partial wiring harness causes a bus failure. At least one user must always stay connected; otherwise the error will be re-entered.
- Check the bus user's supply voltage.
- Check the wiring harness between the DME and the trunk user. For this, all bus users must be disconnected.
- Replace bus user

E o chestie de verificare mai amanuntita, daca dai click pe eroare in Ista nu te indruma pas cu pas ce sa deconectezi si sa masori?

Ar fi nevoie si de un osciloscop cred ca sa vezi comunicatia de pe bus....

Bafta.

Orice as deconecta nu se modifica statusul la test pe ista...

In schimb daca deconectez orice bus, dupa ce citesc erorile, imi apare eroare noua. De exemplu deconectez valva egr si apare eroare noua pe egr.

Daca deconectez releul de bujii, nu imi apare nicio alta eroare. Cu releul deconectat, am doar eroarea "lin bus communication. Control unit has switched itself off..."

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4 minutes ago, Sofrone Ionut said:

Orice as deconecta nu se modifica statusul la test pe ista...

In schimb daca deconectez orice bus, dupa ce citesc erorile, imi apare eroare noua. De exemplu deconectez valva egr si apare eroare noua pe egr.

Daca deconectez releul de bujii, nu imi apare nicio alta eroare. Cu releul deconectat, am doar eroarea "lin bus communication. Control unit has switched itself off..."

Salut, ar fi bine sa desfaci la DDE si sa verifici conexiunea cu aparatul de masura de la releu la dde, eventual sa cureti bine mufele cu spray de contact. Vezi ca la acest model exista o procedura la schimbul releului si a bujiilor ce se face cu ISTA in care releul face ceva adaptari. Scoate bateria inainte de orice operatiune de genul acesta. Eu dupa schimbul de distributie am avut ceva probleme cu injectia la drum denivelat, am desfacut la DDE box si am curatat si reintrodus mufele, apoi s-a rezolvat. 

Spor.

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1 hour ago, Sofrone Ionut said:

Orice as deconecta nu se modifica statusul la test pe ista...

In schimb daca deconectez orice bus, dupa ce citesc erorile, imi apare eroare noua. De exemplu deconectez valva egr si apare eroare noua pe egr.

Mergi la cineva care stie sa foloseasca ISTA si rezolvi, nu rezolvi nimic deconectand mufe la intamplare, de exemplu valva egr si busul care iti da tie eroare nu au nicio legatura...

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@Sofrone Ionut daca pricepi putina engleza cauta pe YT orice are legatura cu CAN-Bus in masina si o sa afli si ce face unul, ce face altul. De acolo incepi diagnoza, dupa ce o intelegi cat poti de bine ce face. O sa vezi ca NIMENI nu scoate mufe la intamplare si se uita apoi in diagnoza..

Cum au zis si altii deconectand module nu rezolvi problema.

Nu este exclus ca MODULUL bujiilor, nu releu (Nu mai zice releu ca NU ESTE RELEU in veci) sa fie si el implicat, sa nu il "vada" sistemul. Dimineata cand e rece se aprinde semnul de bujii, preincalzire in bord?

O sa ma uit maine sa vad daca modulul ala primeste vreun semnal de date. Se prea poate.

Edited by bimmer90f30
  • Facepalm 1
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The glow system of the N47 and N57 diesel engines consists of the following components:

  • DDE control unit
  • Electronic preheating control unit
  • Ceramic glow plugs
  • LIN bus as interface between the DDE control unit and preheating control unit

................

To activate glowing, the DDE sends the required glow plug temperature to the combustion preheating control unit.

Across the LIN bus, the DDE also sends the following operating values to the preheating control unit:

  • Coolant temperature
  • Intake air temperature
  • Ambient pressure
  • Vehicle voltage
  • Injection rate
  • Engine speed
  • Status signal for starter enable

The preheating control unit uses these three operating values to determine the required current for the heater plugs and supplies the heater plugs with current.

......................

Communication

The DDE control unit and preheating control unit communicate across the LIN bus.

The LIN bus is a bidirectional data interface based on the master‐slave principle. The DDE control unit is the master controller.

 

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18 hours ago, bimmer90f30 said:

@Sofrone Ionut daca pricepi putina engleza cauta pe YT orice are legatura cu CAN-Bus in masina si o sa afli si ce face unul, ce face altul. De acolo incepi diagnoza, dupa ce o intelegi cat poti de bine ce face. O sa vezi ca NIMENI nu scoate mufe la intamplare si se uita apoi in diagnoza..

Cum au zis si altii deconectand module nu rezolvi problema.

Nu este exclus ca MODULUL bujiilor, nu releu (Nu mai zice releu ca NU ESTE RELEU in veci) sa fie si el implicat, sa nu il "vada" sistemul. Dimineata cand e rece se aprinde semnul de bujii, preincalzire in bord?

O sa ma uit maine sa vad daca modulul ala primeste vreun semnal de date. Se prea poate.

Nu imi apare semnul de preincalzire dimineata oricat de frig ar fi.

Stiti pe cineva in Bucuresti care ar putea verifica conexiunea dintre dde si modulul bujiilor? Sau care ar putea depista care e defapt problema, in caz ca nu e asta cu preincalzitorul.

 

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