MOTO GUZZI Stelvio 1200 NTX ABS Service Station Manual page 254

Braking system
Description of the defect: the control unit detects a failure in the valve operation. Checks: make sure
that the voltage in pin 25 of the ABS control unit connector is 12 V (battery voltage) and that the con-
nector is not rusty. Solution: restore wiring or the connector
If functioning is correct, proceed to the next check
Checks: no control is possible. Solution: replace ABS control unit.
ABS MOTOR PUMP AXONE ERROR
Description of the defect: the control unit detects a failure in the ABS pump operation. Checks: make
sure that the voltage in pin 1 of the ABS control unit connector is 12 V (battery voltage), that there is
ground connection in pins 13 and 38 of the ABS control unit connector and that the connector is not
rusty. Solution: restore wiring or the connector.
If functioning is correct, proceed to the next check
Checks: no control is possible. Solution: replace ABS control unit.
ABS VALVE RELAY AXONE ERROR
in case of lack of power supply, the error is frequently not detected immediately.
Description of the defect: the control unit detects a failure in the ABS valves relay or lack of power supply
in pin 25 of the control unit. Checks: check pin 25 of the ABS control unit connector, continuity of the
25 A fuse and relative wiring (red/white). Solution: restore the ABS control unit connector or the 25 A
fuse or the wiring.
If functioning is correct, proceed to the next check
Checks: no control is possible. Solution: replace ABS control unit.
CONTROL UNIT AXONE ERROR
Description of the defect: control unit failure. Checks: no control is possible. Solution: replace ABS
control unit.
SUPPLY VOLTAGE AXONE ERROR (operation interval 9.4V - 16.8V)
Error saved only with vehicle speeds over 6 km/h (3.7 m/h).
Description of the defect: the control unit detects a failure in the electric supply voltage. Checks: check
if the voltage is too low (below 9.4V. Solution: charge or replace the battery.
If functioning is correct, proceed to the next check
Checks: check if the voltage is too high (over 16.8V) Solution: replace the voltage regulator
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BRAK SYS - 254
Stelvio 1200 NTX ABS