Yamaha Tracer MT09TRAH 2017 Service Manual page 502

Fault code
No.
42 Rear wheel ABS (intermit-
47 tent wheel speed pulses or
incorrect depressurization)
43 Front wheel sensor (missing
pulses)
44 Rear wheel sensor (missing
pulses)
• Vehicle system power sup-
51
52 ply (voltage of ABS ECU
power supply is high) (for
fault code No. 51)
• Vehicle system power sup-
ply (voltage of wheel sen-
sor power supply is high)
(for fault code No. 52)
53 Vehicle system power supply
(voltage of ABS ECU power
supply is low)
54 Hydraulic unit assembly
(defective ABS solenoid and
ABS motor power supply cir-
cuits)
ABS (ANTI-LOCK BRAKE SYSTEM)
Item
• Pulses from the rear wheel
sensor are received inter-
mittently 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 hydrau-
lic pressure.
Front wheel sensor signal is
not received properly. (Miss-
ing pulses are detected in
the signal while the vehicle is
traveling.)
Rear wheel sensor signal is
not received properly. (Miss-
ing pulses are detected in
the signal while the vehicle is
traveling.)
• Power voltage supplied to
the ABS ECU in the
hydraulic unit assembly is
too high. (for fault code No.
51)
• Power voltage supplied to
the wheel sensor is too
high. (for fault code No. 52)
Power voltage supplied to
the ABS ECU in the hydrau-
lic unit assembly is too low.
Abnormality is detected in
the solenoid or motor power
supply circuit in the hydraulic
unit assembly.
8-131
Symptom
• Incorrect installation of the
• Incorrect rotation of the
• Rear brake dragging
• Defective hydraulic unit
• Foreign material adhered
• Incorrect installation of the
• Defective sensor rotor or
• Defective front wheel sen-
• Foreign material adhered
• Incorrect installation of the
• Defective sensor rotor or
• Defective rear wheel sen-
• Defective battery
• Disconnected battery ter-
• Defective charging system
• Defective battery
• Defective coupler between
• Open or short circuit in the
• Defective charging system
• Defective battery
• Defective coupler between
• Open or short circuit in the
• Defective charging system
• Defective hydraulic unit
Check point
rear wheel sensor (for fault
code No. 42)
rear wheel
assembly
around the front wheel sen-
sor
front wheel
incorrect installation of the
rotor
sor or incorrect installation
of the sensor
around the rear wheel sen-
sor
rear wheel
incorrect installation of the
rotor
sor or incorrect installation
of the sensor
minal
the battery and the hydrau-
lic unit assembly
wire harness between the
battery and the hydraulic
unit assembly
the battery and the hydrau-
lic unit assembly
wire harness between the
battery and the hydraulic
unit assembly
assembly