Diagnosis Using The Fault Codes - Yamaha FZ8NA Service Manual

EAS4B56022
[C-5] DIAGNOSIS USING THE FAULT CODES
Connect the test coupler adapter to the ABS test coupler, and then turn the main switch to "ON".
Information for the fault codes from the ABS ECU is contained in the following table. Refer to this
table for troubleshooting.
TIP
Record all of the fault codes displayed and inspect the check points.
Fault code table
Fault
code No.
ABS_11* Front wheel sensor signal is not
ABS_25* received properly.
Rear wheel sensor signal is not
ABS_12
received properly.
ABS_13 Incorrect signal from the front wheel
ABS_26 sensor is detected.
ABS_14 Incorrect signal from the rear wheel
ABS_27 sensor is detected.
No continuity in the front wheel sensor
ABS_15
circuit.
No continuity in the rear wheel sensor
ABS_16
circuit.
ABS_17 Missing pulses detected in the front
ABS_45 wheel sensor signal.
ABS_18 Missing pulses detected in the rear
ABS_46 wheel sensor signal.
Hydraulic unit solenoid circuit is open or
ABS_21
short-circuited.
Start switch signal is not received prop-
ABS_22 erly (start switch circuit or start switch
monitor circuit).
ABS (ANTI-LOCK BRAKE SYSTEM)
Symptom
8-142
Check point
• Installation of the front wheel sensor
• Front wheel
• Front wheel sensor housing
• Front wheel sensor rotor
• Installation of the rear wheel sensor
• Rear wheel
• Rear wheel sensor housing
• Rear wheel sensor rotor
• Installation of the front wheel sensor
• Front wheel
• Front wheel sensor housing
• Front wheel sensor rotor
• Hydraulic unit assembly
• Installation of the rear wheel sensor
• Rear wheel
• Rear wheel sensor housing
• Rear wheel sensor rotor
• Hydraulic unit assembly
• Continuity of the front wheel sensor circuit
• Wire harness (ABS circuit)
• Connection of the front wheel sensor cou-
pler and ABS ECU coupler
• Front wheel sensor
• Continuity of the rear wheel sensor circuit
• Wire harness (ABS circuit)
• Connection of the rear wheel sensor cou-
pler and ABS ECU coupler
• Rear wheel sensor
• Front wheel sensor rotor
• Front wheel sensor housing
• Front wheel
• Rear wheel sensor rotor
• Rear wheel sensor housing
• Rear wheel
• Hydraulic unit assembly
• Wire harness
• Connection of the starting circuit cut-off
relay couplers and ABS ECU coupler.