Yamaha FJR1300AS(X), Service Manual

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ABS (ANTI-LOCK BRAKE SYSTEM)
8-144
NOTE:
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.
Special precautions for handling and servicing a vehicle equipped with ABS
CAUTION:
EC3P61030
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
WARNING
EW3P61004
• 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.
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.