Yamaha FZ8NA Service Manual page 538

Fault
code No.
Brake light signal is not received prop-
erly while vehicle is traveling (brake
ABS_24
light circuit, or front or rear brake light
switch circuit).
Solenoid relay is defective.
ABS_31 Power is not supplied to the solenoid
relay.
Hydraulic unit solenoid relay is short-
ABS_32
circuited.
ABS motor is defective.
ABS_33
Power is not supplied to the ABS motor.
Hydraulic unit ABS motor relay is short-
ABS_34
circuited.
Front wheel will not recover from the
locking tendency even though the sig-
ABS_41 nal is continuously transmitted from the
ABS ECU to release the hydraulic pres-
sure.
Rear wheel will not recover from the
locking tendency even though the sig-
ABS_42
nal is continuously transmitted from the
ABS_47
ABS ECU to release the hydraulic pres-
sure.
Incorrect signal from the front wheel
ABS_43
sensor is detected.
Incorrect signal from the rear wheel
ABS_44
sensor is detected.
ABS_51
Power voltage is too high.
ABS_52
ABS_53 Power voltage is too low.
ABS_54 Power voltage is too low.
ABS (ANTI-LOCK BRAKE SYSTEM)
Symptom
8-143
Check point
• Brake light bulbs
• Wire harness (brake light circuit)
• Brake light system couplers and connectors
• ABS solenoid fuse
• Wire harness (battery and ABS ECU circuit)
• Connection of the ABS ECU coupler
• Hydraulic unit assembly
• Hydraulic unit assembly
• Battery voltage
• ABS motor fuse
• Wire harness (ABS circuit)
• Connection of the ABS ECU coupler and
starter relay coupler
• Hydraulic unit assembly
• Hydraulic unit assembly
• Brake dragging
• Brake fluid
• Hydraulic unit operation tests
• Front wheel brake lines
• Hydraulic unit assembly
• Brake dragging
• Brake fluid
• Hydraulic unit operation tests
• Rear wheel brake lines
• Hydraulic unit assembly
• Installation of the front wheel sensor
• Front wheel sensor housing
• Front wheel sensor rotor
• Installation of the rear wheel sensor
• Rear wheel sensor housing
• Rear wheel sensor rotor
• Battery voltage
• Battery terminal
• Refer to "CHARGING SYSTEM" on page 8-
19.
• Battery voltage
• Connection of the ABS ECU coupler
• Wire harness
• Refer to "CHARGING SYSTEM" on page 8-
19.
• Battery voltage
• Connection of the ABS ECU coupler and
starter relay coupler
• Wire harness
• Refer to "CHARGING SYSTEM" on page 8-
19.