Yamaha TRACER MT09 TRA, Service Manual

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ABS (ANTI-LOCK BRAKE SYSTEM)
8-116
4 Defective hydraulic unit assembly If the above items were performed and no malfunctions
were found, replace the hydraulic unit assembly.
Refer to “ABS (ANTI-LOCK BRAKE SYSTEM)” on page
4-60.
Fault code No.
42
47
Item
Rear wheel ABS (intermittent wheel speed pulses or incorrect
depressurization)
Symptom
• Pulses from the rear wheel sensor are received intermittently
while the vehicle is traveling. (for fault code No. 42)
• Rear wheel will not recover from the locking tendency even
though the signal is transmitted from the ABS ECU to reduce the
hydraulic pressure.
Order Item/components and probable cause Check or maintenance job
1 Incorrect installation of the rear wheel
sensor (for fault code No. 42)
Check the components for looseness, distortion, and
bends.
Refer to “CHECKING THE REAR WHEEL” on page
4-31.
2 Incorrect rotation of the rear wheel Check that there is no brake disc drag on the wheel and
make sure that it rotates smoothly.
Refer to “CHECKING THE REAR WHEEL” on page
4-31.
3 Rear brake dragging Check that the brake fluid pressure is correctly transmit-
ted to the brake caliper when the brake pedal is oper-
ated and that the pressure decreases when the pedal is
released.
Refer to “CHECKING THE REAR BRAKE DISC” on
page 4-54.
4 Defective hydraulic unit assembly If the above items were performed and no malfunctions
were found, replace the hydraulic unit assembly.
Refer to “ABS (ANTI-LOCK BRAKE SYSTEM)” on page
4-60.
Fault code No. 43
Item Front wheel sensor (missing pulses)
Symptom
Front wheel sensor signal is not received properly. (Missing pulses
are detected in the signal while the vehicle is traveling.)
Order Item/components and probable cause Check or maintenance job
1 Foreign material adhered around the front
wheel sensor
Check the surface of the sensor rotor and wheel sensor
for foreign material, such as metal particles.
Clean the sensor rotor and wheel sensor if necessary.
Fault code No. 41
Item
Front wheel ABS (intermittent wheel speed pulses or incorrect
depressurization)
Symptom
• Pulses from the front wheel sensor are received intermittently
while the vehicle is traveling.
• Front wheel will not recover from the locking tendency even
though the signal is transmitted from the ABS ECU to reduce the
hydraulic pressure.
Order Item/components and probable cause Check or maintenance job