Honda NSS250S Manual page 507

ABS TROUBLESHOOTING INFORMATION
SYSTEM DESCRIPTION
SUMMARY OF ABS PRE-START SELF-DIAGNOSIS SYSTEM
The ABS pre-start self-diagnosis system diagnoses the electrical system as well as the operating status
of the modulator. When there is any abnormality, the problem and the problematic part can be detected
by outputting the problem code.
When the scooter is running, pulse signals generated at the front/rear wheel speed sensor are sent to
the ABS control unit. When the ABS control unit detects that vehicle speed goes to 6 km/h (4 mph), the
pump motor is temporarily operated to check if the ABS system functions normally. If the system is nor-
mal, pre-start self-diagnosis is complete by when the vehicle speed goes to 10 km/h (6 mph) approxi-
mately.
If the ABS indicator blinks, because problem is detected during the pre-start self-diagnosis (page 18-7).
If the ABS indicator does not come on when the ignition switch is turned ON, or the ABS indicator stays
on after the pre-start self-diagnosis procedure is complete, the ABS indicator may be faulty. Follow the
troubleshooting (page 18-12).
Pre-start self-diagnosis when normal:
ON
IGNITION
SWITCH
OFF
Running
ENGINE
Stop
VEHICLE
0
SPEED
ON
PUMP
MOTOR
OFF
ON
ABS
INDICATOR
OFF
PRE-START SELF-DIAGNOSIS PROCEDURE
1. Turn the ignition switch ON and engine stop
switch to " ".
2. Make sure the ABS indicator comes on.
3. Start the engine.
4. Ride the scooter and increase the vehicle speed
to approximately 10 km/h (6 mph).
5. The ABS is normal if the ABS indicator goes off.
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6 km/h (4 mph) or above
10 km/h (6 mph) or above, pre-start
self-diagnosis completes
ABS (NSS250A)
ABS INDICATOR
18-7