Honda NC700 2012, Service Manual

Page: 688 / 773

20-7
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ANTI-LOCK BRAKE SYSTEM (ABS)
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 associated part can be detected by reading the
problem code.
When the motorcycle 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 reaches 6 km/h (4 mph), the pump
motor is temporarily operated to check if the ABS system functions normally. If the system is normal, pre-start
self-diagnosis is complete by the time the vehicle speed reaches 10 km/h (6 mph) approximately.
If a problem is detected, the ABS indicator blinks or comes on and stays on to notify the rider of the problem.
The self-diagnosis is also made while the motorcycle is running, and the ABS indicator blinks when a problem
is detected.
When the ABS indicator blinks, the cause of the problem can be identified by retrieving the problem code
following the specified retrieval procedure (page 20-8).
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 20-12).
PRE-START SELF-DIAGNOSIS PROCEDURE
1. Turn the ignition switch ON and engine stop switch
to " ".
2. Make sure the ABS indicator [1] comes on.
3. Start the engine.
4. Ride the motorcycle and increase the vehicle speed
to approximately 10 km/h (6 mph).
5. The ABS is normal if the ABS indicator goes off.
ON
OFF
ON
OFF
Stop
6 km/h (4 mph) or above
10 km/h (6 mph) or above, Pre-start
serf-diagnosis completes
Pre-start serf-diagnosis when normal:
Start
0
Running
OFF
ON
ENGINE
ABS
INDICATOR
PUMP
MOTOR
VEHICLE
SPEED
IGNITION
SWITCH
[1]