Yamaha MTN1000 2016, Service Manual

Page: 590 / 658

ABS (Anti-lock Brake System)
8-173
Fault code No. 34
Fault code No. 41
Fault code No. 34
Item
Hydraulic unit assembly (short circuit in ABS motor power supply
circuit)
Symptom
Short circuit is detected in the motor power supply circuit in the
hydraulic unit assembly.
Order Item/components and probable cause Check or maintenance job
1 Defective hydraulic unit assembly Replace the hydraulic unit assembly.
Refer to “ABS (Anti-lock Brake System)” on page 4-65.
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
1 Incorrect installation of the front wheel
sensor
Check the components for looseness, distortion, and
bends.
Refer to “CHECKING THE FRONT WHEEL” on page
4-24.
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
4-24 and “CHECKING THE FRONT BRAKE DISCS” on
page 4-45.
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
released.
Refer to “CHECKING THE FRONT BRAKE DISCS” on
page 4-45.
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 4-65.