Yamaha FJR13AG Service Manual page 706

ELECTRONICALLY ADJUSTABLE SUSPENSION SYSTEM
EAS31010
MAINTENANCE OF THE SCU (suspension control unit)
Checking the SCU (suspension control unit)
1. Check:
• Terminals "1" of the SCU
Cracks/damages → Replace the SCU.
• Terminals "2" of the SCU couplers
Connection defective, contaminated, come-off → Replace or clean.
TIP
If the SCU couplers are clogged with mud or dirt, clean with compressed air.
EAS31011
SCU (suspension control unit) SELF-DIAGNOSTIC FUNCTION
The SCU (suspension control unit) is equipped with a self-diagnostic function in order to ensure that
the electronically adjustable suspension system is operating normally. If this function detects a malfunc-
tion in the electronically adjustable suspension system, it immediately operates the system under sub-
stitute characteristics and lights the electronically adjustable suspension system warning light to alert
the rider that a malfunction has occurred in the system. Once a malfunction has been detected, a fault
code is stored in the memory of the SCU (suspension control unit).
Checking the electronically adjustable suspension system warning light
The electronically adjustable suspension system warning light come on for 2.0 seconds after the main
switch has been turned to "ON". If the shift down indicator light, electronically adjustable suspension
system warning light does not come on under this condition, the lights (LED) may be defective.
SCU detects an abnormal signal from a sensor
If the SCU (suspension control unit) detects an abnormal signal from a sensor while the vehicle is being
driven, the SCU (suspension control unit) illuminates the electronically adjustable suspension system
warning light and provides the electronically adjustable suspension system with alternate operating in-
structions that are appropriate for the type of malfunction. When an abnormal signal is received from a
sensor, the SCU (suspension control unit) processes the specified values that are programmed for
each sensor in order to provide the electronically adjustable suspension system with alternate operat-
ing instructions that enable the system to continue operating or stop operating, depending on the con-
ditions.
EAS31012
TROUBLESHOOTING METHOD (SCU)
1. Check:
• Fault code number
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a. Check the fault code numbers that have a condition of "Detected" using the Yamaha diagnostic
tool.
b. Identify the faulty system with the fault code number.
1
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8-229
2
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(FJR13ESG)
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