ECU not Visible - 2000 R1150GS

[Onions]

I'm a newbie just got my unit - worked fine on the K1200, but the R1150GS (Not running) the unit cannot even talk to the ECU.

So for the experienced users should I check other issues before I get a new ECU?

[schuppi]

Hello,
difficult without having the VIN, because of different wirings.
But to give some directions:
First, is ABS reachable?
After starting GS911 look to the right lower display for terminal "30" > VBAT and "15" > VIGN. That should be min. 12,5 V.
If not, look for fuses F5 F6 > 10A
Ground connection upper side gearbox and of course the battery connections.

That's my first aid
 

[Onions]

Thanks for your response.
VIN: WB10415A1YZE12995
No ABS on this model (optional).
Fuel Pump is working - bench tested.
Pulled injectors and turned ignition - no fuel coming from injectors. Has spark at both plugs.
Pull hall sensor connection and insulation on wires cracked and peel off easily - so starting to suspect hall sensor.
Very confused.

[schuppi]

"hall sensor connection and insulation on wires cracked and peel off easily"

You're right, but anyway you must have connection to ECU with GS911

[Onions]

Wolfgang.

It doesn't see the ECU - that's what confuses me.

Any Ideas - is it the ECU also??

[schuppi]

" is it the ECU also?"

Hello,
by my experience, NO

What's about the electrical wiring? Did you checked it? no display for electrical power on GS911?
What's about start elimination, switches for zero gear, side stand, engine kill, emergency off?
Fuel pump starts up by switching on ignition for a few seconds. When engine is running, hall sensor signal is fitting to ECU, pump
runs permanent.

[Jughead]

Remove the front plastic cover from the motor. 

Turn on the ignition.

Using a spanner (wrench) on the alternator pulley bolt, slowly rotate the motor one full revolution in the normal direction of rotation.  Listen for the fuel pump to prime.  It should run for about 2-3 seconds.

If it does not run, your Hall sensor is faulty.  The sensor plate has 2 sensors.  One triggers the coils to fire the spark plugs, the other triggers the fuel pump.

[Jughead]

Wolfgang.

It doesn't see the ECU - that's what confuses me.

Any Ideas - is it the ECU also??

Your diagnostic plug wiring may be dicky, preventing comms with the ECU.  Check the wiring harness where it disappears below the battery bracket.  You may find it is chaffed through and shorting to ground.

[Onions]

Well fellows I am still lost.
Replaced the hall sensor (new) plugged in GS911. Still cannot see the ECU and suggests checking kill switch - so checked kill switch working fine.
Went to relay 8 Motronic Relay - works fine, check power at injector plug - nil. Power at relay yes.
So suspiciously looks like ECU has failed. Can these be tested out of the bike to ensure that it is faulty before I spend lots on a new one.

Checked plug wiring appears OK.

[Onions]

From Wayne GS911

"OK, no worries, it is the old Motronic MA 2.4 on that model, not real familiar with the specifics on it but any of the GS911's should have no trouble seeing the module. Which GS911 model are you using ?

I would suggest using model/series menu then a basic module scan to see if it picks up any comms from the Motronic. After that I would look at the power to the actual Motronic at the socket to confirm it has power rather than at the injector. I would also check continuity of the wiring our to the diags socket before I considered replacement of the Motronic although I recall they are relatively low cost on EBay"

I have enth WiFi (Red One). Tried the basic scan still can't see it. I'll check Power at Motronic and Connector continuity and come back.

Thanks.

[WayneC]

No worries, I would like a $ for every time I forgot to check some basics on comms 

[Onions]

Wayne.

I'm old biker - don't like these computers too hard to pin down problem. Next bike ol Kawasaki 900. Simple Mukinis, electronic ignition and a kick start.  I now have too Beemers K1200GT and the R1150GS love them but not when they don't go.

Anyhow. Checked Dia Plug - no earth except on 2 pins rest open circuit. Checked continuity of dia plug to Motronic all seem OK. Also check continuity to injects to Motronic also appear OK.

Have I forgotten anything???

[WayneC]

On that model the diags socket should have the following pins connected

Pin 01 - Brown/Black - Diags pin to Motronic
Pin 02 - Brown/Blue - Diags to ABS (only if fitted)
Pin 04 - Brown - Earth
Pin 06 - Red/Yellow - Unswitched Power (also known as KL30 or Bat+)
Pin 09 - Blue - Rectifier
Pin 10 - Yellow/Gray - Switched Power (also known as KL15 or Ign On)

For basic comms checks, it is pins 1, 4, 6 and 10 which are relevant and the GS911 is suggesting no power on pin 10

Check for voltage between pin 4 and  pin 6 with ignition off to confirm that is in place
Check for voltage  between pin 4 and  pin 10 with ignition on to confirm that is in place
Plus check continuity of pin 1 back to the Motronic

Ah I am also old school but much prefer processor based systems, but I have worked with electronics and processors all my life 

[Onions]

Wayne

Looking at Diag pin r they numbered L-R or R-L?

[Onions]

Looking at Diag pin r they numbered L-R or R-L

It's OK I'm having a blonde moment doh.