Yamaha N MAX GPD150-A 2015 Service Manual page 409

Fault code No.
Item
Symptom
Order Item/components and probable cause
3 Open or short circuit in the wire harness
between the battery and the hydraulic unit
assembly
4 Defective hydraulic unit assembly
Fault code No. 34
Fault code No.
Item
Symptom
Order Item/components and probable cause
1 Defective hydraulic unit assembly
Fault code No. 41
Fault code No.
Item
Symptom
Order Item/components and probable cause
1 Incorrect installation of the front wheel
sensor
2 Incorrect rotation of the front wheel
ABS (ANTI-LOCK BRAKE SYSTEM)
33
Hydraulic unit assembly (abnormal ABS motor power supply)
Power is not supplied to the motor circuit in the hydraulic unit assem-
bly.
Check or maintenance job
• Replace if there is an open or short circuit.
• Between ABS ECU coupler and ABS motor fuse.
(Red/Blue–Red/Blue)
• Between ABS ECU coupler and ground.
(Black–Black)
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
4-61.
34
Hydraulic unit assembly (short circuit in ABS motor power supply cir-
cuit)
Short circuit is detected in the motor power supply circuit in the hy-
draulic unit assembly.
Check or maintenance job
Replace the hydraulic unit assembly.
Refer to "ABS (ANTI-LOCK BRAKE SYSTEM)" on page
4-61.
41
Front wheel ABS (intermittent wheel speed pulses or incorrect de-
pressurization)
• 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.
Check or maintenance job
Check the components for looseness, distortion, and
bends.
Refer to "CHECKING THE FRONT WHEEL" on page
4-27.
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
4-27 and "CHECKING THE FRONT BRAKE DISC" on
page 4-42.
8-84