Yamaha FJR1300AS(X) Service Manual page 548

Fault
code Symptom
No.
A break or disconnection of
19 the black/red lead of the
ECU is detected.
Coolant temperature sen-
21 sor: open or short circuit
detected.
Intake air temperature sen-
22 sor: open or short circuit
detected.
No normal signal is re-
24
ceived from the O
Latch up detected.
No normal signal is re-
30
ceived from the lean angle
sensor.
The amount of air-fuel ratio
feedback compensation is
31 maintained continuously in
the vicinity of the upper lim-
it (lean air-fuel ratio).
The amount of air-fuel ratio
feedback compensation is
32 maintained continuously in
the vicinity of the lower limit
(rich air-fuel ratio).
Malfunction detected in the
33 primary wire of the cylin-
ders-#1/#4 ignition coil.
Probable cause of malfunction
• Open or short circuit in wire harness.
• Malfunction in ECU.
• Defective relay unit (diode).
• Open or short circuit in wire harness.
• Defective coolant temperature sensor.
• Malfunction in ECU.
• Improperly installed coolant temperature
sensor.
• Open or short circuit in wire harness.
• Defective intake temperature sensor.
• Malfunction in ECU.
• Improperly installed intake air temperature
sensor.
• Open or short circuit in sub-wire harness.
• Open or short circuit in wire harness.
• Defective O
sensor.
2
• Malfunction in ECU.
• Improperly installed O
• The vehicle has overturned.
• Defective lean angle sensor.
• Malfunction in ECU.
• Improperly installed lean angle sensor.
• Open or short circuit in sub-wire harness.
• Open or short circuit in wire harness.
• Fuel pressure too low.
• Clogged injectors.
• Defective O
signal).
• Malfunction in ECU.
• Malfunction in other areas of the fuel sys-
tem.
• Open or short circuit in sub-wire harness.
• Open or short circuit in wire harness.
• Fuel pressure too high.
• Faulty injectors (excessive injection vol-
ume).
• Defective O
lean signal).
• Malfunction in ECU.
• Malfunction in other areas of the fuel sys-
tem.
• Open or short circuit in front cowling wire
harness.
• Open or short circuit in wire harness.
• Malfunction in cylinders-#1/#4 ignition coil.
• Malfunction in ECU.
8-71
FUEL INJECTION SYSTEM
sensor.
2
sensor.
2
sensor (unable to output a rich
2
sensor (unable to output a
2
Diagnostic
code No.
d:20
d:06
d:05
—
d:08
d:01
d:01
d:30