Yamaha FJR13AEV(C), Service Manual

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ABS (ANTI-LOCK BRAKE SYSTEM)
8-140
ET3P61066
[C-4] THE ABS WARNING LIGHT FLASHES
With the engine off, check the front and rear brake light switches.
Check that the rear brake light switch is adjusted properly, and then check if the brake light comes on
when the front or rear brake is applied.
1. The brake light does not come on for only one brake.
• The corresponding brake light switch connector or coupler is disconnected. Refer to “CIRCUIT DI-
AGRAM (1/2) (FJR13A)” on page 8-119, “CIRCUIT DIAGRAM (2/2) (FJR13A)” on page 8-121,
“CIRCUIT DIAGRAM (1/2) (FJR13AE)” on page 8-123, and “CIRCUIT DIAGRAM (2/2) (FJR13AE)”
on page 8-125.
• The corresponding brake light switch is defective.
2. The brake light does not come on for either brake.
• The wire harness and front cowling wire harness may be disconnected or the fuse may be blown.
Check the fuse and make sure that the wire harness (brown or brown/black lead) is connected to
the power source end of the brake light switch. Refer to “CIRCUIT DIAGRAM (1/2) (FJR13A)” on
page 8-119, “CIRCUIT DIAGRAM (2/2) (FJR13A)” on page 8-121, “CIRCUIT DIAGRAM (1/2)
(FJR13AE)” on page 8-123, and “CIRCUIT DIAGRAM (2/2) (FJR13AE)” on page 8-125.
3. The brake light comes on.
• The ABS wire harness, front cowling wire harness, and the wire harness couplers may be discon-
nected. Refer to “ABS COUPLER LOCATION CHART” on page 8-129.
ET3P61067
[C-5] THE ABS WARNING LIGHT FLASHES EVERY 0.5 SECOND
The ABS warning light flashes every 0.5 second if a malfunction code for a past malfunction is not
stored in the memory of the ABS ECU. The ABS warning light flashes quicker if a malfunction code is
displayed on the multi-function display. If no malfunction code is displayed, make sure that the custom-
er understands the possible conditions that may cause the ABS warning light to come on or flash even
if the system is normal.
1. ABS warning light flashes
The following are probable causes to explain why the ABS warning light flashed while riding, and
then stopped flashing, or stopped flashing when the main switch was turned to “OFF”, then back to
“ON”.
• The rear wheel was rotated with the vehicle on the centerstand.
The system is normal.
• The rear wheel raced.
The system is normal.
• The vehicle was ridden on the rear wheel with the front wheel elevated.
The system is normal.
W W W / B Br / B W / L Br / W
B B B / W G / R G / Y W / Y Lg
R / B B W / G W / L W / Y R / L
Y / G Sb B2 L / W R / W
G / Y
Dg W / L R / W
Ch
Br
Br / G B R / B
L / W
R / L
R / W
9
4
3
1
2
6
7
8
5
5. ABS ECU
6. Start switch
7. Relay unit (starting circuit cut-off relay) 8. Starter relay
9. Starter motor