Service Manual — page 468 of 715
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.