Yamaha FJR13AEV(C) Service Manual page 614

Malfunc-
tion code
No continuity in the front or rear wheel
sensor circuits.
15
15/16
16
Hydraulic unit solenoid circuit is broken
or short-circuited.
21
Front or rear brake light switch is defec-
tive.
23
Brake light is defective.
24
No signal is received from the front
wheel sensor when the vehicle starts
moving.
25
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
41
normal).
41
ABS (ANTI-LOCK BRAKE SYSTEM)
Problem
8-143
Check point
• Continuity of the sensor cir-
cuits
• Wire harness and ABS wire
harness (ABS circuit)
• Connection of the wheel
sensor couplers
• ABS wire harness (ABS cir-
cuit)
• Hydraulic unit solenoid cou-
pler
• Hydraulic unit solenoids
• 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)
• Brake light relay
• Brake light bulbs
• Wire harness and ABS wire
harness (brake light circuit)
• 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)
• Brake dragging
• Hydraulic unit operation
tests
• Front wheel brake lines
Reference
Malfunction
codes 15 and
16
(See page
8-147.)
Malfunction
code 21
(See page
8-148.)
Malfunction
code 23
(See page
8-149.)
Malfunction
code 24
(See page
8-149.)
Malfunction
code 25
(See page
8-150.)
Malfunction
code 41
(See page
8-150.)