This information is about testing the Race Tools hardware for the Quickshifter/Autoblipper unit.
Plug the Race Tools Harness into the bike harness as per normal operation. Turn the Ignition ON.
Use a multimeter to measure sensor signal voltage at the connector that attaches the Race Tools to the Bike harness. (O2 or EXUP plug)
- Race Tools Brown wire - Ground (Black multimeter probe)
- Race Tools White wire - Signal (Red multimeter probe)
A) No Load Voltage Test
- No load signal voltage = 2.5V ± 0.15V
- Write down this voltage reading (Value A)
- Voltage should be fairly stable
B) Compression Load response
- Put compression force on sensor
- Signal voltage should move towards 5V
- Write down this voltage reading (Value B)
- Release force from sensor
- Voltage should return to 2.5V ± 0.15V
C) Tension Load response
- Put tension force on sensor
- Signal voltage should move towards 0V
- Write down this voltage reading (Value C)
- Release force from sensor
- Voltage should return to 2.5V ± 0.15V
D) Pit Speed Limiter button response (if available)
- Press the PSL button ON
- Record the signal voltage seen
- Write down this voltage reading (Value D)
- Press the PSL button OFF
- Voltage should return to 2.5V ± 0.15V
Potential problems when testing the Quickshifter/Autoblipper voltages.
The Quickshifter sensors and controllers have an auto-zero feature built into them which can sometimes interfere with these voltage tests.
When no pressure is applied to the sensor, it self-zeroes in its current state which is typically about 2.5V. The sensor then waits for a change from this value in order to detect an up- or downshift.
When you apply pressure, the controller detects the CHANGE in voltage and triggers the output.
If the pressure is applied for more than 3-4 seconds, the sensor begins to self-zero again, and you will see the voltage output return to the 'no pressure state', if you then release the pressure, the controller again detects the change (from the new zero state) and triggers the output in the other direction. It then begins to zero itself again.
So, if you put pressure on the shift sensor for more than 3-4 seconds it will skew the results.
If you are using a digital multimeter, remember they can be relatively slow to respond and display voltages, and it can be more difficult to see the voltages in the 3-4 second window accurately.
If your results match the above, then the hardware is working just fine.
If your results do not match the above (ie: there is no initial voltage, or there is no change when applying pressure), then please
Open a Support Ticket, and let us know the model/year, your Race Tools serial number, and the results of the above tests.