Abs System Components; Abs Overview Of Operation - Victory Cross Roads Classic Service Manual

• When the anti-lock brakes engage during a braking
event, the rider will feel pulsing at the brake lever or
pedal. Continue to apply steady pressure to the
brakes for the best stopping performance.
• The wheel speed sensor-to-pulse ring air gap is
adjustable. Shims can be added or removed to
bring the air-gap into specification. See adjustment
procedure outlined in this chapter.
• The ABS system is not re-programmable.
• The ABS light is controlled by the ECM via CAN BUS.
• Diagnostic codes are unique to ABS and can only
be viewed with Digital Wrench. ABS Trouble Codes
will not appear on the Instrument Cluster display as
an SPN / FMI code.
• Wheel speed sensors are used only for ABS. The
Vehicle Speed Sensor is used for vehicle speed.
• If fuse is open or removed, ABS light will remain
ON after 6 mph (10 kph). ABS will not be active.
Normal (conventional) braking will be available
provided the system components (master cylinder,
lines, calipers, etc.) are in working order.

ABS System Components

The following parts function in the same manner as the
same component in a non-ABS system, although parts are
not necessarily interchangeable. Always refer to the
appropriate ABS parts information when replacing a
component or component parts. Refer to the non-ABS
portion of this chapter for removal, installation, operational
overview, and repair of these components. Refer to
page 15.6 for ABS System Component Diagram.
• Front Brake Calipers
• Rear Brake Caliper
• Front Master Cylinder
• Rear Master Cylinder
• Brake Light Switch
• Brake Lines
In addition to the brake system components listed above,
the following are used on ABS equipped vehicles:
• Wheel Speed Sensors (Front located on front left
fork leg; Rear mounted on rear caliper bracket)
• Wheel Speed Sensor Pulse Rings (Front and Rear
mounted to wheel with 3 disc bolts)
• ABS Module Assembly
9924047 - 2012-2013 VICTORY Cross Roads / Cross Country Service Manual
• ABS Related Wiring
• ABS Indicator Lamp

ABS Overview Of Operation

The ABS system is active and available when vehicle
speed exceeds 6 mph (10 kph).
The system uses two independent Hall-Effect Wheel
Speed Sensors. One sensor is mounted to the front left fork
leg and one is mounted to the rear brake caliper bracket.
Two Pulse Rings are also used, one mounted to the left
front brake disc hub and one to the rear brake disc hub,
which rotate with the wheels. When the vehicle is in motion,
the multiple reluctor segments on each pulse ring pass by
the center pole of the respective wheel speed sensor,
generating an electrical pulse signal in the sensor which is
sent to the ABS Module which is located under the rear
fender.
The ABS Module interprets wheel speed signal pulses to
determine speed, rate-of-change, and front / rear wheel
speed differential to determine if wheel lock-up is about to
occur. When wheel lock-up is imminent during a braking
event, the ABS Module controls the operation of solenoids
and a pressure pump (located inside the ABS Module) to
regulate the amount of line pressure and cycles (length of
time) applied to the caliper pistons and brake pads. This
pressure / time modulation can often be felt at the brake
lever or the brake pedal during an ABS braking event and
is a normal condition. Note that the brake fluid is not
diverted inside the module and does not "flow" in the
system any more than occurs in a conventional (non-ABS)
brake system.
If the surface coefficient changes (such as moving from wet
pavement to dry pavement) the ABS system will
recalculate (in a matter of milliseconds) and adjust
pressure output to caliper(s) as required.
In the event of a system fault, the ECM turns on the ABS
indicator lamp (via the CAN BUS) and leaves it on even
after vehicle speed exceeds 6 mph (10 kph) activation
speed.
If a system fault occurs, the light will remain on (and ABS
will not be active) until the ignition key is turned to OFF
position and back to ON.
The ABS Module Assembly is serviceable only as an
assembly. The module itself is not rebuildable.
Disconnect negative (-) battery cable from battery before
servicing ABS brake lines or system components.
© Copyright 2012 Polaris Sales Inc.
BRAKES
15
15.5