View Full Version : BMW Can Bus: I need all possible info/documentation , Z3 cluster retrofit


nuvola rossa
08-04-2007, 07:14 AM
I need to know all possible about CAN Bus on BMW E36 and Z3.

I need to know especially if with it the ECU can send km/h or rpms to the instrument cluster.

In my 318iS E36 (M44 engine), CAN is used only from ABS to ECU (pins 86&87 of ecu), but in Z3 (s54 engine) it's used with ABS, ECU and Instrument Cluster(from same ecu pins). So I'm trying to fit a Z3 ///M CAN instrument cluster in my 318is that doesn't have a CAN cluster oem, but it have CAN in ECU and pinouts.

I try to explane better what I'll do.
318is oem cluster have a speed input directly from ecu.
Z3 ///M cluster doesn't have a speed input like 318is, but it take signal from CAN.

I'll remove the 318is cluster.
I'll splice a wire to CAN high and another to CAN low in the ECU, and I connect it to the CAN pins of Z3 cluster.

Will it works for you?


please if you have doku about this, post it here,
thanks.

http://forums.***************************************?att achmentid=174284&stc=1&d=1166742182.jpg

johnny88m3
08-05-2007, 01:29 PM
I don't think there is goin to be anyway to get that to work because the other modules on the bus system do not have an address for the cluster even if they did the communication protocal is different because of the difference in generation add to that that the v.o. (vechile order) what is all the infromation about the car is stored in the cluster is not goin to match the new cluster and if u tried to get coded anywhere it would not work because the diagnostic machine would not recognise the cluster

RNeil
08-08-2007, 05:02 PM
Try Googling "J1939"

nuvola rossa
08-08-2007, 05:23 PM
Try Googling "J1939"

thank you, lot of infos searching "J1939"!:alright

nightkrawler
08-09-2007, 07:31 PM
hey nv, i think you're facing somewhat of a similar issue i had when trying to do the m5 cluster retrofit. did you try coding the cluster? i tried to code the m5 one(used cluster) with progman but it wouldnt take the coding. i have talked to a guy who has successfully coded a used m5 cluster in an 97 e39. he however, used pre v44 gt1 software. the dis/gt1 had more coding options than progman. what model year and production date is your 318? i'll find a cluster wiring diagram for you.

bimmer_boyis
08-11-2007, 12:46 PM
Once a cluster is coded it's married to that car. On e39's try swapping the lamp module and cluster from an m5.

nassos
04-06-2008, 09:51 AM
I need to know all possible about CAN Bus on BMW E36 and Z3.

I need to know especially if with it the ECU can send km/h or rpms to the instrument cluster.

In my 318iS E36 (M44 engine), CAN is used only from ABS to ECU (pins 86&87 of ecu), but in Z3 (s54 engine) it's used with ABS, ECU and Instrument Cluster(from same ecu pins). So I'm trying to fit a Z3 ///M CAN instrument cluster in my 318is that doesn't have a CAN cluster oem, but it have CAN in ECU and pinouts.

I try to explane better what I'll do.
318is oem cluster have a speed input directly from ecu.
Z3 ///M cluster doesn't have a speed input like 318is, but it take signal from CAN.

I'll remove the 318is cluster.
I'll splice a wire to CAN high and another to CAN low in the ECU, and I connect it to the CAN pins of Z3 cluster.

Will it works for you?


please if you have doku about this, post it here,
thanks.

http://forums.***************************************?att achmentid=174284&stc=1&d=1166742182.jpg

Hello,
Did you manage to get this cluster to work?
I am trying to do the same!!!
I have a s54 cluster like the one you had and I am trying to put it to a e36 1997 m3...

When I put the cluster in the car the RPM meter and the temp gauge do not work!!!

So did you get it to work?

If yes, how did you do it?

Thanks
Nassos