Yamaha FJR13AY 2009 Service Manual page 615

TIP
The ABS performs a self-diagnosis test for a few seconds each time the vehicle first starts off after the
main switch was turned on. During this test, a "clicking" noise can be heard from under the seat, and if
the brake lever or brake pedal are even slightly applied, a vibration can be felt at the lever and pedal,
but these do not indicate a malfunction.
Self-diagnosis using the ABS ECU
The ABS ECU performs a static check of the entire system when the main switch is turned to
"ON". It also checks for malfunctions while the vehicle is ridden. Since all malfunctions are record-
ed after they are detected, it is possible to check the recorded malfunction data by utilizing the
multi-function display when the ABS ECU has entered the self-diagnosis mode.
Special precautions for handling and servicing a vehicle equipped with ABS
EC3P61030
NOTICE
Care should be taken not to damage components by subjecting them to shocks or pulling on
them with too much force since the ABS components are precisely adjusted.
• The ABS ECU and hydraulic unit are united assemblies and cannot be disassembled.
• The malfunction history is stored in the memory of the ABS ECU. Delete the fault codes when the ser-
vice is finished. (This is because the past fault codes will be displayed again if another malfunction
occurs.)
EAS27800
BASIC INSTRUCTIONS FOR TROUBLESHOOTING
EW3P61004
WARNING
• Perform the troubleshooting [A] → [B] → [C] → [D] in order. Be sure to follow the order since
a wrong diagnosis could result if the steps are followed in a different order or omitted.
• Use sufficiently charged regular batteries only.
[A] Malfunction check using the ABS warning light
[B] Detailed check of the malfunction
The results of the self-diagnosis by the ABS ECU can be displayed using the multi-function display.
[C] Determining the cause and location of the malfunction
Determine the cause of the malfunction from the condition and place where the malfunction occurred.
[D] Servicing the ABS
Execute the final check after disassembly and assembly.
ABS (ANTI-LOCK BRAKE SYSTEM)
8-132