Yamaha TMAX 2020 Service Manual page 528

SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
DTC
15 Front wheel sensor (open
or short circuit)
16 Rear wheel sensor (open
or short circuit)
17* Front wheel sensor (miss-
45* ing pulses)
18* Rear wheel sensor (miss-
46* ing pulses)
21 Hydraulic unit assembly
(defective solenoid drive
circuit)
Item
Open or short circuit is de-
tected in the front wheel
sensor.
Open or short circuit is de-
tected in the rear wheel
sensor.
Front wheel sensor signal
is not received properly.
(Missing pulses are de-
tected in the signal while
the vehicle is traveling.)
Rear wheel sensor signal
is not received properly.
(Missing pulses are de-
tected in the signal while
the vehicle is traveling.)
Solenoid drive circuit in
the hydraulic unit assem-
bly is open or short-circuit-
ed.
Symptom
9-54
Check point
• Defective coupler be-
tween the front wheel
sensor and the hydraulic
unit assembly
• Open or short circuit in
the wire harness be-
tween the front wheel
sensor and the hydraulic
unit assembly
• Defective front wheel
sensor or hydraulic unit
assembly
• Defective coupler be-
tween the rear wheel
sensor and the hydraulic
unit assembly
• Open or short circuit in
the wire harness be-
tween the rear wheel
sensor and the hydraulic
unit assembly
• Defective rear wheel
sensor or hydraulic unit
assembly
• Foreign material ad-
hered around the front
wheel sensor
• Incorrect installation of
the front wheel
• Defective sensor rotor or
incorrect installation of
the rotor
• Defective front wheel
sensor or incorrect in-
stallation of the sensor
• Foreign material ad-
hered around the rear
wheel sensor
• Incorrect installation of
the rear wheel
• Defective sensor rotor or
incorrect installation of
the rotor
• Defective rear wheel
sensor or incorrect in-
stallation of the sensor
• Defective hydraulic unit
assembly