Yamaha XT660R(S) Automobile User Manual


 
7 - 9
FI
FUEL INJECTION SYSTEM
EAS00906
Diagnostic monitoring code table
Fault
code No.
Symptom Probable cause of malfunction Diagnostic code
12
No normal signals are received from
the crankshaft position sensor.
Open or short circuit in wire harness
Defective crankshaft position sensor
Disconnected crankshaft position sensor coupler
Malfunction in A.C. magneto rotor
Malfunction in ECU
Improperly installed crankshaft position sensor
13
Open or short circuit is detected in the
intake air pressure sensor.
Open or short circuit in wire harness
Defective intake air pressure sensor
Disconnected intake air pressure sensor coupler
Malfunction in ECU
03
14
Faulty intake air pressure sensor
hose system.
detected hose
clogged hose
Disconnected, clogged, kinked, or pinched intake air
pressure sensor hose
Defective intake air pressure sensor
Malfunction in ECU
03
15
Open or short circuit is detected in the
throttle position sensor.
Open or short circuit in wire harness
Defective throttle position sensor
Disconnected throttle position sensor coupler
Malfunction in ECU
Improperly installed throttle position sensor
01
16
Stuck throttle position sensor is
detected.
Stuck throttle position sensor
Improperly installed throttle position sensor
Malfunction in ECU
01
19
Open circuit in the input line (blue/
black lead) of ECU is detected when
the start switch is pushed.
Open circuit in wire harness (ECU coupler)
Malfunction in ECU 20
21
Open or short circuit is detected in the
coolant temperature sensor.
Open or short circuit in wire harness
Defective coolant temperature sensor
Disconnected coolant temperature sensor coupler
Malfunction in ECU
Improperly installed coolant temperature sensor
06
22
Open or short circuit is detected in the
intake air temperature sensor.
Open or short circuit in wire harness
Defective intake air temperature sensor
Disconnected intake air temperature sensor coupler
Malfunction in ECU
Improperly installed intake air temperature sensor
05
30
The motorcycle has overturned. Overturned motorcycle
Malfunction in ECU
08
33
Open circuit is detected in the primary
lead of the ignition coil.
Open circuit in wire harness
Malfunction in ignition coil
Malfunction in ECU
Malfunction in a component of ignition cut-off circuit sys-
tem
30
41
Open or short circuit is detected in the
lean angle cut-off switch.
Open or short circuit in wire harness
Defective lean angle cut-off switch
Disconnected lean angle cut-off switch coupler
Malfunction in ECU
08
42
No normal signals are received from
the speed sensor or an open or short
circuit is detected in the neutral
switch.
Open or short circuit in wire harness
Defective speed sensor
Disconnected speed sensor coupler
Malfunction in vehicle speed sensor detected unit
Defective neutral switch
Disconnected neutral switch connector
Malfunction in the engine side of the neutral switch
Malfunction in ECU
07
21
43
Power supply to the injector and fuel
pump is not normal. (The ECU is
unable to monitor the battery voltage.)
Open circuit in wire harness
Malfunction in ECU
Defective fuel injection system relay
09, 50