Yamaha 2008 YZF-R6X, Service Manual

Page: 362 / 434

FUEL INJECTION SYSTEM
8-39
EAS27400
TROUBLESHOOTING METHOD
The engine operation is not normal and the
engine trouble warning light comes on.
1. Check:
• Fault code number
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Check the fault code number displayed on
the meter.
b. Identify the faulty system with the fault
code. Refer to “Self-Diagnostic Function
table”.
c. Identify the probable cause of the malfunc-
tion. Refer to “Fault code table”.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
2. Check and repair the probable cause of
malfunction.
3. Perform Fuel injection system reinstate-
ment action.
Refer to “Reinstatement method” of table in
“TROUBLESHOOTING DETAILS”.
4. Turn the main switch to “OFF” and back to
“ON”, then check that no fault code number
is displayed.
NOTE:
If fault codes are displayed, repeat steps (1) to
(4) until no fault code number is displayed.
5. Erase the malfunction history in the diag-
nostic mode. Refer to “Sensor operation
table (Diagnostic code No. 62)”.
NOTE:
Turning the main switch to “OFF” will not erase
the malfunction history.
The engine operation is not normal but the
engine trouble warning light does not come
on.
1. Check the operation of following sensors
and actuators in the Diagnostic mode.
Refer to “Sensor operation table” and
“Actuator operation table”.
If a malfunction is detected in the sensors
or actuators, repair or replace all faulty
parts.
If no malfunction is detected in the sensors
and actuators, check and repair inner parts
of the engine.
Fault code No. No fault code No.
Check and repair.
Refer to “TROUBLE-
SHOOTING
DETAILS” on page 8-
49.
Monitor the operation
of the sensors and
actuators in the diag-
nostic mode. Refer to
“Sensor operation
table” and “Actuator
operation table”. Check and repair.
01: Throttle position sensor (for throttle
valves) signal 1 (throttle angle)
13: Throttle position sensor (for throttle
valves) signal 2 (throttle angle)
14: Throttle position sensor (for throttle cable
pulley) signal 1 (throttle angle)
15: Throttle position sensor (for throttle cable
pulley) signal 2 (throttle angle)
48: Air induction system solenoid