ABS (ANTI-LOCK BRAKE SYSTEM)
8-131
21
Hydraulic unit solenoid circuit is broken
or short-circuited.
• ABS wire harness (ABS cir-
cuit)
• Hydraulic unit solenoid cou-
pler
• Hydraulic unit solenoids
Malfunction
code 21
(See page
8-135.)
23
Front or rear brake light switch is defec-
tive.
• Improper adjustment of the
rear brake light switch
• Brake light switches
• Brake light relay
• Wire harness, ABS wire har-
ness, and front cowling wire
harness (ABS circuit)
Malfunction
code 23
(See page
8-136.)
24
Brake light is defective.
• Brake light relay
• Brake light bulbs
• Wire harness and ABS wire
harness (brake light circuit)
Malfunction
code 24
(See page
8-137.)
25
No signal is received from the front
wheel sensor when the vehicle starts
moving.
• Rear wheel was rotated
when the vehicle was on the
centerstand
• Slippage of the rear wheel
• The vehicle wheelies
• Installation of the front
wheel sensor
• Wire harness and ABS wire
harness (front wheel sensor
circuit)
Malfunction
code 25
(See page
8-137.)
41
Front wheel will not recover from the
locking tendency even though the sig-
nal is continuously transmitted from the
ABS ECU to release the hydraulic
pressure (when the battery voltage is
normal).
41
• Brake dragging
• Hydraulic unit operation
tests
• Front wheel brake lines
Malfunction
code 41
(See page
8-137.)
42
Rear wheel will not recover from the
locking tendency even though the sig-
nal is continuously transmitted from the
ABS ECU to release the hydraulic
pressure (when the battery voltage is
normal).
42
• Brake dragging
• Hydraulic unit operation
tests
• Rear wheel brake lines
Malfunction
code 42
(See page
8-139.)
31
Disconnection is detected in the bat-
tery and ABS ECU circuit.
• ABS motor fuse
• Wire harness and ABS wire
harness (battery and ABS
ECU circuit)
• ABS ECU couplers
Malfunction
code 31
(See page
8-140.)
Malfunc-
tion code
Problem Check point Reference
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