Service Manual — page 470 of 715

Brakes › Power Supply Voltage Abnormal (Low-Voltage) (Service Code 52)
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12-48 BRAKES
Anti-Lock Brake System

• 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.

• 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.).

Rear Wheel Rotation Sensor Wiring Inspection
(Service Code 45)
• Disconnect:
   ABS Hydraulic Unit Connector (see ABS Hydraulic Unit
     Removal)
     Rear Wheel Rotation Sensor Connector (see Rear
     Wheel Rotation Sensor Removal)

• Check
  lead.
        the wiring continuity of the BK/O lead and W/G

      Rear Wheel Rotation Sensor Lead Connector [A]
      ABS Hydraulic Unit Lead Connector [B]
      BK/O Lead Terminals [C]
      W/GK Lead terminals [D]
    If the wiring is open, replace or repair the harness (see
    ABS System Wiring Diagram).
    If the wiring is good, 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 yellow ABS indicator light (LED) [A] lights, replace
    the rear wheel rotation sensor (see Rear Wheel Rotation
    Sensor Removal).
    Still, when it is not good, 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.).
Power Supply Voltage Abnormal (Low-Voltage)
(Service Code 52)
• Check:
   Battery Condition (see Charging Condition Inspection in
      the Electrical System chapter)
    If the battery and charging voltage are good condition, go
    to next step.