Honda VFR800F 2014 Service Manual page 353

ABS (ll AC,
lll
GM
types)
ABS TROUBLESHOOTING
IN
FORMATION
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
DTC,
When the motorcycle is running, pulse signals generated
at
the front and rear wheel speed sensors are sent to the ABS control
unit.
When the vehicle speed
reaches
approximately 6 km/h (a
mph) the ABS control
unit operates
the pump
motor to check it. When
the vehicle speed reaches
10
km/h (6 mph),
the
ABS control unit turns off the
ABS
indicator
if
the system
is
normal and the pre-start
self-diagnosis
is
completed.
lf any
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 reading the DTC (page
18-6).
lf the ABS indicator does not come on when the ignition switch
is
turned ON, or the ABS indicator stays on
after
the pre-stad
self-
diagnosis is completed although the ABS system is normal, the ABS
indicator circuit may be faulty. Follow the troubleshooting
(page
18-11)
Pre-start
self-diagnosis when
the
system
is normal:
IGNITION
SWITCH
ENGINE
VEHICLE
SPEED
PUN/P
MOTOR
ON
OFF
Running
Stop
0
ON
OFF
ON
6 km/h (4 mph) or
above
ABS
INDICATOR
OFF
PRE-START SELF-DIAGNOSIS PROCEDURE
(Daily check)
1.
Tufn the ignition switch ON with the engine stop switch "O".
2.
Make sure the ABS indicator 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.
Pre-start self-diagnosis
is
completed
at
10
km/h (6 mph)
18-5