Yamaha XSR MTM690 2016 Service Manual page 512

Fault code No. 42, 47
Fault code No.
Item
Symptom
Order Item/components and probable cause
1 Incorrect installation of the rear wheel
sensor (for fault code No. 42)
2 Incorrect rotation of the rear wheel
3 Rear brake dragging
4 Defective hydraulic unit assembly
Fault code No. 43
Fault code No.
Item
Symptom
Order Item/components and probable cause
1 Foreign material adhered around the front
wheel sensor
2 Incorrect installation of the front wheel
3 Defective sensor rotor or incorrect instal-
lation of the rotor
4 Defective front wheel sensor or incorrect
installation of the sensor
ABS (ANTI-LOCK BRAKE SYSTEM)
42
47
Rear wheel ABS (intermittent wheel speed pulses or incorrect depres-
surization)
• 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.
Check or maintenance job
Check the components for looseness, distortion, and
bends.
Refer to "CHECKING THE REAR WHEEL" on page
4-24.
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
4-24.
Check that the brake fluid pressure is correctly transmit-
ted to the brake caliper when the brake pedal is operat-
ed and that the pressure decreases when the pedal is
released.
Refer to "CHECKING THE REAR BRAKE DISC" on
page 4-49.
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
4-56.
43
Front wheel sensor (missing pulses)
Front wheel sensor signal is not received properly. (Missing pulses
are detected in the signal while the vehicle is traveling.)
Check or maintenance job
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.
Check the components for looseness, distortion, and
bends.
Refer to "CHECKING THE FRONT WHEEL" on page
4-14.
Check the surface of the sensor rotor for damage. Re-
place the sensor rotor if there is visible damage.
Refer to "MAINTENANCE OF THE FRONT WHEEL
SENSOR AND SENSOR ROTOR" on page 4-15.
Check the wheel sensor for damage and the installed
condition of the sensor. Repair or replace the wheel
sensor if necessary.
Refer to "MAINTENANCE OF THE FRONT WHEEL
SENSOR AND SENSOR ROTOR" on page 4-15.
8-141