Troubleshooting Method
Fragment manuala — str. 645
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YCC-S (Yamaha Chip Controlled-Shift) SYSTEM (FJR13AE only)
Able/un-
Fault Able/un- able to
Symptom Malfunction detecting condition
code No. able to start change the
shift
Braking signal is not No braking signal is received by
Sh_ _47 detected while brak- MCU (motor control unit) when ve- Able Able
ing. hicle is braking.
Improper engine idling Engine speed at engine start-up
Sh_ _48* Unable Unable
speed adjustment. exceeds the set limit.
Engine idling speed is
Engine speed when vehicle is
Sh_ _49* too high when vehicle Able Able
starting off exceeds the set limit.
is started.
Shift rod is not in neutral position
Shift actuator sensor
Sh_ _51 when shift actuator is not operat- Unable Unable
signal is abnormal.
ing.
Main switch “OFF” signal is re-
Main switch signal is
Sh_ _52* ceived even though engine is run- Able Able
abnormal.
ning.
*If the main switch is turned to “OFF”, the fault code number will disappear from the display and will not
be displayed again when the main switch is turned back to “ON”. Therefore, use the engine stop switch
to stop the engine, not the main switch. If the fault code number has disappeared, activate the diagnos-
tic mode and select diagnostic code No. Sh_ _61. The fault code numbers can be confirmed in the mal-
function history. Refer to “Diagnostic code table (Diagnostic code No. Sh_ _61)”.
ET3P66063
The YCC-S indicator and warning light come
TROUBLESHOOTING METHOD
on.
NOTE: 1. Check:
If the engine trouble indicator “1”, YCC-S indica- • Fault code number
tor “2”, and engine trouble warning light “3” all ▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
come on, malfunctions have been detected in a. Check the fault code number displayed on
both the fuel injection system and the YCC-S the meter and diagnostic code Sh_ _61.
system. If this occurs, the fault codes for the fuel Refer to “Diagnostic code table (Diagnostic
injection system take priority over those for the code No. Sh_ _61)”.
YCC-S system, so only the fuel injection system b. Identify the faulty system with the fault code.
fault codes will appear in the multi-function dis- Refer to “Self-Diagnostic Function table”.
play. The fault codes for the YCC-S system will ▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
be displayed in the multi-function display after all 2. Check and repair the probable cause of the
of the fault codes for the fuel injection system malfunction.
have been deleted using the reinstatement Refer to “TROUBLESHOOTING DETAILS”
method. on page 8-179.
3. Perform the reinstatement action for the
YCC-system.
Refer to “Reinstatement method” in the ap-
propriate table in “TROUBLESHOOTING
DETAILS”.
SHIFT 3 4. Turn the main switch to “OFF” and back to
“ON”, then check that no fault code number is
1 displayed.
NOTE:
If fault codes are displayed, repeat steps (1) to
(4) until no fault code number is displayed.
8-174