Service Manual (KLZ1000C) — page 691 of 762

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SELF-DIAGNOSIS SYSTEM 17-89
ABS Service Codes
○Check the wiring continuity between the positive cable
    terminal [A] of the battery and R/W lead terminal [B] in
    the ABS hydraulic unit connector [C].
    If the wiring is open, replace or repair the harness (see
    ABS System Circuit(12-32)).
    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.
•   Perform the Pre-Diagnosis Inspection 1 and 2 (see In-
    quiries to Rider(12-40)).
    If this service code appears even if all checks are ended,
    replace the ABS hydraulic unit.
    If the service code does not appear, the ABS system nor-
    mal (temporary failure).
Front Wheel Rotation Sensor Signal Abnormal
(Service Code B42)
• Measure  the air gap between the front wheel rotation sen-
  sor and sensor rotor.
     Thickness Gauge [A]
    Air Gap
      Standard:    0.6  1.4 mm (0.02  0.06 in.)
    If the measurement is not the standard, check each part
    for deformation and looseness and correct accordingly.
    If the measurement is the standard, go to next step.

• Check  that there is iron or other magnetic deposits be-
  tween the sensor and sensor rotor, and the sensor rotor
    slots for obstructions.
•   Check the installation condition of the sensor for loose-
    ness.
•   Check the sensor and sensor rotor tip for deformation or
    damage (e.g., chipped sensor rotor teeth).
    If the sensor and sensor rotor in bad condition, remove
    the any deposits. Install the proper part or replace faulty
    part.
    If the all items are good, go to next step.
•   Perform the Pre-Diagnosis Inspection 1 and 2 (see In-
    quiries to Rider(12-40)).
    If this service code appears even if all checks are ended,
    replace the ABS hydraulic unit.
    If the service code does not appear, the ABS system nor-
    mal (temporary failure).