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FUEL INJECTION SYSTEM
FI
Fault code No. 19 Symptom Open circuit is detected in the input line from the sidestand switch to the ECU.
Used diagnostic code No. 20 (sidestand switch)
Inspection operation item and probable
cause
Operation item and countermeasure Reinstatement
method
Defective sidestand switch Replace if defective.
Refer to “CHECKING THE SWITCHES” in
chapter 8.
If the transmission
is in gear, it is
reinstated by
Open or short circuit in wiring harness and/or
sub lead.
Repair or replace if there is an open or short
circuit.
Between sidestand switch coupler and starting
circuit cut-off relay coupler, starting circuit cut-off
relay coupler and ECU coupler
Blue/Black – Blue/Black,
Blue/Yellow – Blue/Yellow
retracting the
sidestand.
If the transmission
is in neutral, it is
reinstated by
reconnecting the
wiring.
Fault code No. 20 Symptom Faulty atmospheric pressure sensor or intake air pressure sensor.
Used diagnostic code No. 03 (intake air pressure sensor)
02 (atmospheric pressure sensor)
Inspection operation item and probable
cause
Operation item and countermeasure Reinstatement
method
Intake air pressure sensor hose detached,
clogged, kinked, or pinched.
Atmospheric pressure sensor hose is
clogged.
Repair or replace the sensor hose.
Reinstated by
turning the main
switch ON.
Defective intake air pressure sensor or
atmospheric pressure sensor.
Replace if defective.
Refer to “Fault code No.13 or No.23”.
Fault code No. 21 Symptom Open or short circuit is detected from the coolant temperature sensor.
Used diagnostic code No. 06 (coolant temperature sensor)
Inspection operation item and probable
cause
Operation item and countermeasure Reinstatement
method
Installed condition of sensor Check the installed area for looseness or
pinching.
Reinstated by
turning the main
Defective coolant temperature sensor. Replace if defective.
Refer to “COOLING SYSTEM” in chapter 8.
switch ON.
Open or short circuit in wiring harness and/or
sub lead.
Repair or replace if there is an open or short
circuit.
Between sensor coupler and ECU coupler
Black/Blue - Black/Blue
Green/White - Green/White
Connected condition of connector
Inspect the coupler for any pins that may
have pulled out.
Check the locking condition of the coupler.
If there is a malfunction, repair it and connect it
securely.
Coolant temperature sensor coupler
Main wiring harness ECU coupler
Sub-wire harness coupler