Yamaha 2007 FZ6-NA Service Manual page 420

Fault code No. 19 Symptom
Diagnostic code No.
Item/components and probable
Order
Connected state of connector
• Main wire harness ECU coupler (No.
13 and 30 pin, black)
1
• Alarm coupler
Open or short circuit in wire harness
or sub lead.
2
Defective sidestand switch
3
Fault code No. 21 Symptom
Diagnostic code No.
Item/components and probable
Order
Installed condition of coolant tempera-
1
ture sensor
Connected state of connector
• Coolant temperature sensor coupler
• Main wire harness ECU coupler
2
Open or short circuit in wire harness
and/or sub lead.
3
Defective coolant temperature sensor. • Execute the diagnostic monitor-
4
Open circuit is detected in the input line from the side-
stand switch to the ECU.
20 Sidestand switch
cause
Coolant temperature sensor-open or short circuit
detected.
06 Coolant temperature sensor
cause
FUEL INJECTION SYSTEM
Check or maintenance job
• Check 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.
• Repair or replace if there is an
open or short circuit.
• Between ECU and sidestand
switch
(Black/Red–Blue/Green)
• Execute the diagnostic monitor-
ing mode. (Code No.20)
• Replace if defective.
Refer to "CHECKING THE
SWITCHES" on page 8-109.
Check or maintenance job
Check the installed area for
looseness or pinching.
• Check 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.
• Repair or replace if there is an
open or short circuit.
• Main wire harness
(Black/Blue–Black/Blue)
(Green/White–Green/White)
ing mode. (Code No.06)
• Replace if defective.
Refer to "CHECKING THE
COOLANT TEMPERATURE
SENSOR" on page 8-127.
8-47
Reinstate-
ment method
If the transmis-
sion is in gear,
retracting the
sidestand.
If the transmis-
sion is in neu-
tral,
reconnecting
the wiring.
Reinstate-
ment method
Turning the
main switch
ON.