MOTO GUZZI Stelvio 1200 NTX ABS Service Station Manual page 253

Stelvio 1200 NTX ABS
Braking system
Checks: check the speed sensor signal (0.5 or 1 V) on the orange/purple cable between pin 1 of the
front speed sensor connector and pin 22 of the ABS module connector. If there is not enough voltage,
check cable continuity from the ABS module to the speed sensor connector and make sure that the
cable is grounded insulated. Solution: if the cable is interrupted or grounded, restore wiring.
If the cable harness is not damaged, it means that the speed sensor is defective or the circuit between
sensor and connector is interrupted: replace the speed sensor.
REAR SPEED SENSOR OPEN CIRCUIT OR SHORT CIRCUIT AXONE ERROR
Description of the defect: the control unit detects abnormal voltage in the rear speed sensor signal.
Checks: check battery voltage on the white/pink cable between pin 2 of the rear speed sensor connector
and pin 20 of the ABS module connector. If there is not enough voltage, check cable continuity from
the ABS module to the speed sensor connector and make sure that the cable is grounded insulated.
Solution: restore wiring. It is normal that when the speed sensor connector is disconnected, no voltage
is detected.
If functioning is correct, proceed to the next check
Checks: check the speed sensor signal (0.5 or 1 V) on the purple/pink cable between pin 1 of the rear
speed sensor connector and pin 31 of the ABS module connector. If there is not enough voltage, check
cable continuity from the ABS module to the speed sensor connector and make sure that the cable is
grounded insulated. Solution: if the cable is interrupted or grounded, restore wiring.
If the cable harness is not damaged, it means that the speed sensor is defective or the circuit between
sensor and connector is interrupted: replace the speed sensor.
FRONT / REAR SPEED SENSOR COHERENCE AXONE ERROR
Description of the defect: the control unit detects an abnormal condition in the signals coming from the
speed sensors: for example, disturbances, signal intensity reduced, speed difference between the two
wheels for a certain period of time, etc. Checks: check the correct distance between speed sensor and
tone wheel. Solution: restore the correct distance between speed sensor and tone wheel.
If functioning is correct, proceed to the next check
Checks: check the tone wheel is not distorted (it should not be deformed or damaged). Solution: replace
tone wheel
If functioning is correct, proceed to the next check
Checks: check the speed sensor position and integrity. Solution: position the speed sensor correctly or
replace it.
If functioning is correct, proceed to the next check.
Checks: check tyres for wear (there should not be much difference between front and rear) and for
correct pressure. Solution: use tyres with the specified tyre wear condition and pressure.
If functioning is correct, proceed to the next check
Checks: make sure that "the failure" has not been caused by using the vehicle in sport competitions.
Solution: for example, avoid prolonged rearing up on the back wheel
AXON ERROR FRONT / REAR INLET / OUTLET VALVE
Revente Interdite - Revendita Vietata - Resaling Forbiden - Wiederverkauf Verboten
BRAK SYS - 253