ECU not Visible - 2000 R1150GS

[WayneC]

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

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

No worries, I have them all the time  ;D

I have basic overview info re diags, dealer diags pin outs, how pins are numbered etc on my 650GS web site

[Onions]

OK

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 ------------12.2V  with ign On ---11.9V
Check for voltage  between pin 4 and  pin 10 with ignition on to confirm that is in place-----------0V
Plus check continuity of pin 1 back to the Motronic---------------0 ohm and 0V
Confirmed 4 Brown is earthed.

[WayneC]

There is the first problem, there is no power on pin 10 when ignition is on hence the warning from GS911

Check there is switched power to the Motronic on the socket to it when ignition is on, I dont have a diagram to check which pin it is

[Onions]

So let me see if I have this right - pull plug of Motronic and turn ignition on then see if there is power to one of the plugs?

What if there is?

What if there isn't?

Probably won't get this done today.

[Jughead]

It may be a stupid suggestion, but check the sidestand switch.  Is the bike on the centre stand with the sidestand retracted?

I have had some older bikes that will not comm or even start while on the sidestand.

Sent from my SM-G900F using Tapatalk

[Onions]

First thing I did was pull the side stand plug so it's not connected. :'(

[WayneC]

Good thought Jughead, unplugging the side stand on a 2000 model 650GS is the equivalent of side stand down and there is then no earth return for the engine Motronic relay/ECU hence no power active to it. Suggest plugging the side stand back in and ensure it is up

[Onions]

That'd be right - too smart for my own good - would I be better of shorting the terminals just in case the switch is dicky.

[WayneC]

We are all too smart for our own good at times  ;D, suggest just plugging it back in first, I dont know that diagram so cant comment on shorting wires

[Onions]

Well done it now talks to the ECU. I have a play tomorrow. Minister for Finance is up my ribs to do BBQ - Gotta Go Thanks very much for ur patience and help.

I let you know how I go.

[Jughead]

[emoji106]  The giveaway was the fact that you had spark, a functional fuel pump, but no fuel at the injectors.

Sidestand circuit kills the motor by disabling the injectors. Will post a wiring diagram when I get a chance.

You will most likely find that if you hit the happy button now you will have a running bike.

[WayneC]

I have some pdf's which show wiring Colors/Pins/ECU Type for all the models up to 2014 if you want them Jughead

[Onions]

That would be much appreciated.

[WayneC]

Here you go

[Onions]

Wayne

Thanks again mate looks like it was the hall sensor.

Checked all connections - new sensor installed and bingo diag sees ECU - bloody thing even starts so I am going to see if I can go for a test ride.