Found this, works for R850GS/R and R1100GS/R/RS/RT/
(dunno if it works for 1150s...)
Resetting the throttle position switch with a digital voltmeter:
1. Push back insulation from the throttle position switch connector
2. Insert two thin probe tips at pins 1 & 2 of the throttle position switch. Note that the connector should not be disconnected for this test.
3. With the ignition ON, measure the voltage with a high resolution digital voltmeter. With the throttle twistgrip at idle position (fully closed) the voltage should read between 360 and 370 mV.
4. Adjust the voltage by slowly and carefully moving the throttle position switch (rotation sensor) up, down or even in a circular motion. Note: extreme precision is required! Work slowly and methodically.
5. The voltage is approx.4.75 V at full load. Open the throttle twistgrip fully for this purpose.
(dunno if it works for 1150s...)
Resetting the throttle position switch with a digital voltmeter:
1. Push back insulation from the throttle position switch connector
2. Insert two thin probe tips at pins 1 & 2 of the throttle position switch. Note that the connector should not be disconnected for this test.
3. With the ignition ON, measure the voltage with a high resolution digital voltmeter. With the throttle twistgrip at idle position (fully closed) the voltage should read between 360 and 370 mV.
4. Adjust the voltage by slowly and carefully moving the throttle position switch (rotation sensor) up, down or even in a circular motion. Note: extreme precision is required! Work slowly and methodically.
5. The voltage is approx.4.75 V at full load. Open the throttle twistgrip fully for this purpose.

