General Category > Central Vehicle Electronics/ZFE/GM issues

R1200RT Instrument Cluster Blank

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mike d:
The following is from a friend who has just bought a 2005 R1200RT. Initially all was o.k. with the instrument cluster.The only thing that has changed since it ran last is both wheels are off for new tyres,
the front forks are off for overhaul so the front ABS sensor is just dangling in mid air.

Went to start the bike today (05 R1200RT), turned the key but nothing on the display. None of the handlebar controls work (indicators horn etc) but bizarrely she started fine but still nothing showing on the display.
 Disconnected the battery and left it for an hour, came back and tried again. The display lights up briefly with trip information and then goes out when the battery is connected, turn the ignition key on and still no display.
But now I am getting nothing at all - not even a backlight on the LCD is coming on.

It also sounds different when you turn the key, the ABS pump isn't cycling as normal but the throttle body idle control valves are cycling and resetting.

I don't have a clue where to start looking for a fault. I am assuming the CanBus is detecting a problem somewhere and is isolating that circuit. Could it be the ABS pump ? Phil can you help out here with your wealth of
knowledge on the CanBus system ?I am concerned that the ABS pump isn't running through it's normal checks either. Getting a bit concerned that the ZFE unit has failed, unfortunately the label has no details on it like I have seen on other units for sale - so matching it is going to be difficult :-(
The fuel gauge is part of the LCD display and the whole thing just remains blank, even the back lights for the speedo and rev counter are not coming on

The following is the GS-911 fault readout:
Fault Codes Report
GS-911 version: 1503.2 Datapack version: 2.0 Serial Number: GS60135011 Registered to: The BMW Club Ltd
Date: 18/08/2015 Time: 19:24:42
________________________________________
BMS-K

Motorcycle VIN: WB10368045ZM******

10218: CAN-bus Timeout: no communication with KOMBI (Instrument Cluster) control unit
The fault is currently present.
This problem occurred once.
Logistic counter: 40
Symptom: No signal or value.
MIL set: No


10219: CAN-bus Timeout: no communication with ZFE (Central Vehicle Electronics) control unit
The fault is currently present.
This problem occurred once.
Logistic counter: 40
Symptom: No signal or value.
MIL set: No

I also tried to run the output tests and cluster tests - no response from the instrument cluster at all. So does that mean that the ZFE is not sending an output or is the GS911 talking directly to the instrument cluster ?

I have confirmed there is power to the instrument cluster and a good earth. I have no idea how to test if there is traffic on the canbus cables though.

Any ideas?

Thanks in anticipation

Mike (On behalf of Graham)

WayneC:
Well it is pretty clear the Dash is not talking to CAN-BUS so look at the connections to start with

What we have found with other dash assemblies is they run at 5v internally and the voltage regulator inside has aggressive over current protection and will shut down a dash. The fact you are saying it initially displays and then goes blank reminds me of a voltage regulator shut down due a short or even just dirt and crud build up on the circuit board

Jughead:
Check and clean the 2 small micro switches for the ignition.  I had this recently on an R1200GSA.  Motor ran but nothing else works. 

The switch can be accessed by removing the ring antenna cover.  Unclip the cable from the underside and remove the 2 small screws holding it in place.  Pull the entire switch unit out and open it up carefully.  By bet is that it will be full of corrosion.

Will post some pics.

Jughead:
Ok, here you go.

Once you have removed the unit, this is what you will have:



Carefully pop off the cover...



And flip it over.  You will see the 2 microswitches.



Turn it around and you will most likely see this area corroded.

mike d:
Hi WayneC and Jughead,

Thanks for the suggestions, I will pass them on, much appreciated.

This morning he will be looking at the ignition switch end, having continuity checked all the cabling between the modules.

Will let you know how it progresses.

Mike

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