Yamaha Tenere 700 2020, Service Manual

Page: 429 / 472

ABS (ANTI-LOCK BRAKE SYSTEM)
8-118
Fault code No. 41
Fault code No. 42, 47
Fault code No. 41
Item
Front wheel ABS (intermittent wheel speed pulses or incorrect de-
pressurization)
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
1 Incorrect installation of the front wheel
sensor Check the components for looseness, distortion, and
bends.
Refer to “CHECKING THE FRONT WHEEL” on page
4-13.
2 Incorrect rotation of the front wheel Check that there is no brake disc drag on the front wheel
and make sure that it rotates smoothly.
Refer to “CHECKING THE FRONT WHEEL” on page
4-13 and “CHECKING THE FRONT BRAKE DISCS” on
page 4-30.
3 Front brake dragging Check that the brake fluid pressure is correctly transmit-
ted to the brake caliper when the brake lever is operated
and that the pressure decreases when the lever is re-
leased.
Refer to “CHECKING THE FRONT BRAKE DISCS” on
page 4-30.
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
4-44.
Fault code No.
42
47
Item
Rear wheel ABS (intermittent wheel speed pulses or incorrect depres-
surization)
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 Conditions when the malfunction oc-
curred If the rear wheel locks intermittently due to rapid down
shifting or due to engine braking on a slippery road sur-
face, fault code Nos. ABS_42 and ABS_47 may be indi-
cated.
2 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
4-21.