Yamaha FJR13AEV(C) Service Manual page 616

Malfunc-
tion code
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
52
low).
Present
malfunc-
tion ABS ECU may be malfunctioning.
(pocket
tester al-
ways indi-
cates 12
V)
* Malfunction code 11 is indicated if the rear wheel rotates for longer than about 20 seconds with the
front wheel stopped (e.g., when the vehicle is on the centerstand).
NOTE:
Malfunction codes 15 (front wheel) and 16 (rear wheel) are indicated if a defective connection is detect-
ed in the front or rear wheel sensor when the vehicle is not being ridden.
Malfunction code 11 (Front wheel sensor signal is not received properly.)
Turn the main switch to "OFF", then back to "ON" after removing the test coupler adapter.
1. The ABS warning light remains on.
→ Defective connection is detected in the front wheel sensor circuit.
• Front wheel sensor coupler is disconnected.
Refer to "MAINTENANCE OF THE FRONT WHEEL SENSOR AND SENSOR ROTOR" on page
4-20 and "INSTALLING THE FRONT WHEEL (FRONT BRAKE DISCS)" on page 4-22.
• Front wheel sensor or lead is broken.
Refer to "MAINTENANCE OF THE FRONT WHEEL SENSOR AND SENSOR ROTOR" on page
4-20 and "INSTALLING THE FRONT WHEEL (FRONT BRAKE DISCS)" on page 4-22.
• Front wheel sensor circuit is disconnected.
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.
• ABS ECU coupler terminal is disconnected.
Refer to "MAINTENANCE OF THE ABS ECU" on page 8-132.
2. The ABS warning light comes on for 2.0 seconds, then goes off.
a. With the front wheel stopped, the rear wheel was rotated for longer than about 20 seconds. This is
not a malfunction.
b. No signal is generated at the front wheel sensor.
• Front wheel sensor is not installed properly.
Refer to "MAINTENANCE OF THE FRONT WHEEL SENSOR AND SENSOR ROTOR" on page
4-20 and "INSTALLING THE FRONT WHEEL (FRONT BRAKE DISCS)" on page 4-22.
• Front wheel sensor rotor is defective.
Refer to "MAINTENANCE OF THE FRONT WHEEL SENSOR AND SENSOR ROTOR" on page
4-20 and "INSTALLING THE FRONT WHEEL (FRONT BRAKE DISCS)" on page 4-22.
ABS (ANTI-LOCK BRAKE SYSTEM)
Problem
8-145
Check point
• Brake dragging
• Hydraulic unit operation
tests
• Rear wheel brake line
• Battery voltage
• Wire harness and ABS wire
harness (ABS test coupler
circuit)
• Wire harness, ABS wire har-
ness, front cowling wire har-
ness (ABS warning light
circuit)
• ABS ECU (replace)
Reference
Malfunction
code 52
(See page
8-155.)
Maintenance
of the ABS
ECU
(See page
8-132.)