Service Manual — page 472 of 715

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12-50 BRAKES
Anti-Lock Brake System
Output Fluid Pressure Sensor (Front Brake)
Wiring Inspection (Service Code 83)
○The Output Fluid Pressure Sensor is built in the ABS Hy-
    draulic Unit. Therefore the sensor cannot be checked di-
    rectly.
•   Perform the Pre-Diagnosis Inspection 1 and 2 (see In-
    quiries to Rider).
    If the yellow ABS indicator light (LED) [A] lights, the ABS
    hydraulic unit has trouble. Replace the ABS hydraulic
    unit.
    If the yellow ABS indicator light (LED) does not light, ABS
    system is normal (service code is not stored; temporary
    failure.).
Output Fluid Pressure Sensor (Front Brake) Offset
Abnormal (Service Code 84)
○The Output Fluid Pressure Sensor is built in the ABS Hy-
    draulic Unit. Therefore the sensor cannot be checked di-
    rectly.
•   Perform the Pre-Diagnosis Inspection 1 and 2 (see In-
    quiries to Rider).
    If the yellow ABS indicator light (LED) [A] lights, the ABS
    hydraulic unit has trouble. Replace the ABS hydraulic
    unit.
    If the yellow ABS indicator light (LED) does not light, ABS
    system is normal (service code is not stored; temporary
    failure.).
Fluid Pressure Sensor Supply Voltage Inspection
(Service Code 89)
○The Fluid Pressure Sensors are built in the ABS Hydraulic
    Unit. Therefore the voltage cannot be checked directly.
•   Perform the Pre-Diagnosis Inspection 1 and 2 (see In-
    quiries to Rider).
    If the yellow ABS indicator light (LED) [A] lights, the ABS
    hydraulic unit has trouble. Replace the ABS hydraulic
    unit.
    If the yellow ABS indicator light (LED) does not light, ABS
    system is normal (service code is not stored; temporary
    failure.).
ABS Hydraulic Unit Removal
                           NOTICE
    The ABS hydraulic unit [A] has been adjusted
    and set with precision at the factory. Therefore, it
    should be handled carefully, never struck sharply,
    as with a hammer, or allowed to fall on a hard
    surface.
    Be careful not to get water or mud on the ABS hy-
    draulic unit.

•○Drain the brake fluid from the front and rear brake lines.
  Drain the brake fluid through the bleed valve by pumping
    the brake lever and pedal.