Kawasaki Z1000SX - Service manual > Front, Rear Wheel Rotation Difference Abnormal (Service Code 25)

Brakes / Anti-Lock Brake System (Equipped Models) / Front, Rear Wheel Rotation Difference Abnormal (Service Code 25)

  • Check the following and correct the faulty part.

    Incorrect Tire Pressure
    Tires not recommended for the motorcycle were installed (incorrect tire size).
    Deformation of Wheel or Tire
    Missing Teeth and Clogging with Foreign Matter of Sensor Rotor (see Wheel Rotation Sensor Inspection)

If the all parts correct, recheck the service code indication; erase the service code, perform the pre-diagnosis inspection 1 and 2, and retrieve the service code.

If the ABS indicator light (LED) [A] lights, the ABS hydraulic unit has trouble. Replace the ABS hydraulic unit.

If the ABS indicator light (LED) does not light, ABS system is normal (service code is not stored; temporary failure.).

Anti-Lock Brake System (Equipped Models)

ABS Motor Relay Inspection (Service Code 35)

  • Remove:
    Front Seat (see Front Seat Removal in the Frame chapter)
  • Check the ABS motor relay fuse (30 A) [A] (see Fuse Inspection in the Electrical System chapter).

Anti-Lock Brake System (Equipped Models)

If the fuse is good, check the wiring continuity that relates to the R lead in the main harness referring to the ABS System Wiring Diagram.

Special Tool - Hand Tester 57001-1394

Wiring Continuity Inspection
 ABS Hydraulic Unit
 Connector [A] ←→ Fuse Box Terminal [B]
  R Lead [C]

Anti-Lock Brake System (Equipped Models)

If there is not the continuity in the lead, replace or repair the main harness.

If there is the continuity in the lead, go to next step.

  • Recheck the service code indication; erase the service code, perform the pre-diagnosis inspection 1 and 2, and retrieve the service code.

    If the ABS indicator light (LED) [A] lights, the ABS hydraulic unit has trouble. Replace the ABS hydraulic unit.

    If the ABS indicator light (LED) does not light, ABS system is normal (service code is not stored; temporary failure.).

Anti-Lock Brake System (Equipped Models)

Front Wheel Rotation Sensor Signal Abnormal (Service Code 42)

  • Measure the air gap between the front wheel rotation sensor and sensor rotor (see Wheel Rotation Sensor Air Gap Inspection).
  • Check the front wheel rotation sensor (see Wheel Rotation Sensor Inspection).

    If both inspections are good, go to next step.

  • Check that there is iron or other magnetic deposits between the sensor [A] and sensor rotor [B], and the sensor rotor slots for obstructions.
  • Check the installation condition of the sensor for looseness.
  • 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 deposits.

    Install the proper part or replace faulty part.

    If the all items are good, go to next step.

Anti-Lock Brake System (Equipped Models)

  • Recheck the service code indication; erase the service code, perform the pre-diagnosis inspection 1 and 2, and retrieve the service code.

    If the ABS indicator light (LED) [A] lights, the ABS hydraulic unit has trouble. Replace the ABS hydraulic unit.

    If the ABS indicator light (LED) does not light, ABS system is normal (service code is not stored; temporary failure.).

Anti-Lock Brake System (Equipped Models)

Front Wheel Rotation Sensor Wiring Inspection (Service Code 43)

  • Disconnect:
    ABS Hydraulic Unit Connector (see ABS Hydraulic Unit Removal)
    Front Wheel Rotation Sensor Connector (see Front Wheel Rotation Sensor Removal)
  • Check the wiring continuity of the G lead and BK/R lead.

Special Tool - Hand Tester 57001-1394

Wiring Continuity Inspection
 ABS Hydraulic Unit
 Connector [A] ←→ Front Wheel Rotation  Sensor Connector [B]
  BK/R Lead Terminal [C]
  G Lead Terminal [D]

If there is not the continuity in the lead, replace or repair the main harness.

If the wiring is good, go to next step.

Anti-Lock Brake System (Equipped Models)

  • Recheck the service code indication; erase the service code, perform the pre-diagnosis inspection 1 and 2, and retrieve the service code.

    If the ABS indicator light (LED) [A] lights, replace the front wheel rotation sensor (see Front Wheel Rotation Sensor Removal).

    Still, when it is not good, replace the ABS hydraulic unit.

    If the ABS indicator light (LED) does not light, ABS system is normal (service code is not stored; temporary failure.).

Anti-Lock Brake System (Equipped Models)

    See also:

     Kawasaki Z1000SX - Service manual > Service Code Clearing Procedures

    Start the service code erase mode with the following procedure. The erase mode starts when the ABS self-diagnosis terminal is disconnected from the ground terminal after starting the self-diagnosis mode. The service code can be erased by grounding and ungrounding (each time for at least one second) the ABS self-diagnosis terminal three times within about 12.5 seconds after starting the erase mode. The ABS indicator light (LED) remains lit during the erase mode. After erasing, the ABS indicator light (LED) blinks and lights. Once erasing is finished, enter the self-diagnosis mode again to confirm that the service codes have been erased. If the ABS has been reset and all codes have been erased, only start code 12 will be shown.

     Kawasaki Z1000SX - Service manual > Rear Wheel Rotation Sensor Signal Abnormal (Service Code 44)

    Measure the air gap between the rear wheel rotation sensor and sensor rotor (see Wheel Rotation Sensor Air Gap Inspection). Check the rear wheel rotation sensor (see Rear Wheel Rotation Sensor Inspection).

    Motorcycles: