Yamaha XV19SX(C) Service Manual page 437

Fault code No. 19
Diagnostic code No.
Order Item/components and probable
cause
1 Connections
• Main wire harness ECU coupler
2 Open or short circuit in wire harness.
3 Defective sidestand switch.
Fault code No. 22
Diagnostic code No.
Order Item/components and probable
cause
1 Installed condition of air temperature
sensor.
2 Connections
• Air temperature sensor coupler
• Main wire harness ECU coupler
3 Open or short circuit in wire harness.
4 Defective air temperature sensor.
Symptom A break or disconnection of the blue/black lead of the
ECU is detected.
20 Sidestand switch
Check or maintenance job
• Execute the diagnostic mode.
• Check the coupler for any pins
• Check the locking condition of
• If there is a malfunction, repair it
• Repair or replace if there is an
• Between ECU and blue/black
• Replace if defective.
Symptom Air temperature sensor: open or short circuit detected.
05 Air temperature sensor
Check or maintenance job
Check for looseness or pinching. Turning the
• Check the coupler for any pins
• Check the locking condition of
• If there is a malfunction, repair it
• Repair or replace if there is an
• Between air temperature sen-
• Execute the diagnostic mode.
• Replace if defective.
7-46
FUEL INJECTION SYSTEM
(Code No.20)
that may be pulled out.
the coupler.
and connect the coupler se-
curely.
open or short circuit.
lead
Refer to "CHECKING THE
SWITCHES" on page 7-71.
that may be pulled out.
the coupler.
and connect the coupler se-
curely.
open or short circuit.
sor coupler and ECU coupler
(brown/white–brown/white)
(black/blue–black/blue)
(Code No.05)
Refer to "CHECKING THE AIR
TEMPERATURE SENSOR" on
page 7-91.
Reinstatement
method
If the transmis-
sion is in gear,
retracting the
sidestand.
If the transmis-
sion is in neu-
tral,
reconnecting
the wiring.
Reinstatement
method
main switch to
"ON".