Yamaha MT-09 2021 Service Manual page 505

SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
DTC
57 Vehicle CAN communica-
tion line or power source of
vehicle system
62 Power supply voltage fail-
ure in pressure sensor
68 Defective hydraulic unit
assembly (defective front
pressure sensor)
89 CAN communication (be-
tween meter assembly
and hydraulic unit assem-
bly)
90 CAN communication (be-
tween ECU and hydraulic
unit assembly)
91 CAN communication (be-
tween IMU and hydraulic
unit assembly)
Item
Short-circuit in CAN com-
munication line or the volt-
age that supplies the
hydraulic unit assembly is
too low.
Abnormality detected in
pressure sensor power
supply circuit of hydraulic
unit assembly.
Abnormality detected in
pressure sensor circuit at
front caliper side of hy-
draulic unit assembly.
Transmitted data from the
meter cannot be normally
received.
Transmitted data from the
FI ECU cannot be normal-
ly received.
Transmitted data from the
IMU cannot be normally
received.
Symptom
9-75
Check point
• Short-circuit in CAN
communication line
• Defective battery
• Defective coupler be-
tween battery and hy-
draulic unit assembly
• Wire harness between
battery and hydraulic unit
is interrupted or has
short-circuited
• Defective charging sys-
tem
• Defective hydraulic unit
assembly
In case of electrical inter-
locking brake
• Defective front brake line
• Defective hydraulic unit
assembly
• Defective coupler be-
tween meter assembly
and hydraulic unit as-
sembly
• Harness is broken or
short-circuit between
meter assembly and hy-
draulic unit assembly
• Defective meter assem-
bly
• Defective hydraulic unit
assembly
• Defective coupler be-
tween FI ECU and hy-
draulic unit assembly
• Harness is broken or
short-circuit between FI
ECU and hydraulic unit
assembly
• Defective FI ECU
• Defective hydraulic unit
assembly
• Defective coupler be-
tween IMU and hydraulic
unit assembly
• Harness is broken or
short-circuit between
IMU and hydraulic unit
assembly
• Defective IMU
• Defective hydraulic unit
assembly