Yamaha FJR1300AS(X) Service Manual page 670

YCC-S (Yamaha Chip Controlled-Shift) SYSTEM (FJR1300AS
Checking the YCC-S indicator and warning light
The YCC-S indicator and warning light come on for 1.4 seconds after the main switch has been turned
to "ON" and they come on while the start switch is being pushed. If the YCC-S indicator and warning
light does not come on under these conditions, the warning light (LED) may be defective.
a. Main switch "OFF"
b. Main switch "ON"
c. YCC-S indicator and warning light off
ET3P66062
SELF-DIAGNOSTIC FUNCTION TABLE
If the MCU (motor control unit) detects an abnormal signal from a sensor while the vehicle is being driv-
en, the MCU (motor control unit) lights the YCC-S indicator and warning light and provides the YCC-S
system with alternate operating instructions that are appropriate for the type of malfunction.
When an abnormal signal is received from a sensor, the MCU (motor control unit) processes the spec-
ified values that are programmed for each sensor in order to provide the YCC-S system with alternate
operating instructions that enable the system to continue operating or stop operating, depending on the
conditions.
Self-Diagnostic Function table
Fault
Symptom
code No.
Too low or too high
Sh_ _11 voltage is supplied to
the YCC-S system.
Malfunction of power
cut-off function in
Sh_ _12
MCU (motor control
unit)
a b
c d
Malfunction detecting condition
Voltage is below 8 V or above 16
V.
Faulty power source relay cut-off
function is detected during the
YCC-S system check when main
switch is turned to "ON".
8-193
3
SHIFT
1
2
c
d. YCC-S indicator and warning light on for 1.4
seconds
able to start
Unable
Unable
only)
Able/un-
Able/un- able to
change the
shift
Unable
Unable