Diagnostic Monitoring Code Table - Yamaha XT660R 2004 Service Manual

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EAS00906

Diagnostic monitoring code table

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