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Brakes › Front Wheel Rotation Sensor Signal Abnormal (Service Code 42)

Service Manual page 468 — Brakes › Front Wheel Rotation Sensor Signal Abnormal (Service Code 42)
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12-46 BRAKES
Anti-Lock Brake System
ABS Motor Relay Inspection (Service Code 35)
• Remove:
   Seat (see Seat Removal in the Frame chapter)
• Inspection
  Check  the ABS motor relay fuse (25 A) [A] (see Fuse
             in the Electrical System chapter).

    If the fuse is good, check the wiring continuity between
    the positive (+) terminal [A] of the battery and R/W lead
    terminal [B] in the ABS hydraulic unit lead connector [C].
    If the wiring is open, replace or repair the harness (see
    ABS System Wiring Diagram).
    If the wiring is good, go to next step.

○The ABS motor relay is built in the ABS Hydraulic Unit.
    Therefore the relay cannot be checked directly.
•   Recheck the service code indication; erase the service
    code, perform the pre-diagnosis inspection 1 and 2, and
    retrieve the service code.
    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.).
Front Wheel Rotation Sensor Signal Abnormal
(Service Code 42)
• Measure  the air gap between the front wheel rotation sen-
  sor and sensor rotor (see Wheel Rotation Sensor Air Gap
    Inspection).
•   Check the front wheel rotation sensor (see Wheel Rota-
    tion Sensor Inspection).
    If both inspections are good, go to next step.

• Check  that there is iron or other magnetic deposits be-
  tween the sensor [A] and sensor rotor [B], and the sensor
    rotor slots for obstructions.
•   Check the installation condition of the sensor for loose-
    ness.
•   Check the sensor rotor tip for deformation or damage
    (e.g., chipped sensor rotor teeth).
    If the sensor rotor in bad condition, remove the any de-
    posits. Install the proper part or replace faulty part.
    If the all items are good, go to next step.