Yamaha 2009 Diversion XJ6S Service Manual page 433

Fault code No.
Symptom
Fail-safe action
Diagnostic monitoring
code No.
Meter display
Checking method
Order
1
2
3
4
5
6
7
24
The O sensor does not operate.
2
Engine startup: Possible
Riding: Possible
—
—
—
Item/components and
probable cause
O sensor installation
2
status
Connection of O sensor
2
coupler
Check the connection of
the coupler is secure.
Remove the coupler, and
check each pin (for bend-
ing, wear, or locking).
Connection of main har-
ness ECU coupler
Check the connection of
the coupler is secure.
Remove the coupler, and
check each pin (for bend-
ing, wear, or locking).
Continuity of wire har-
ness
Check the fuel pressure.
O sensor malfunction
2
ECU malfunction
FUEL INJECTION SYSTEM
Check or maintenance
job
Check the sensor for a
loose mounting or a
pinch.
Poor connection ⇒ Con-
nect it securely, or repair/
replace the wire harness.
Poor connection ⇒ Con-
nect it securely, or repair/
replace the wire harness.
Open or short circuit ⇒
Connect it securely, or
repair/replace the wire
harness.
Black/Blue–Black/Blue
Gray/Green–Gray/Green
Red/White–Red/White
Pink/Black–Pink/Black
Refer to "CHECKING
THE FUEL PRESSURE"
on page 7-9.
Check the O sensor for
2
an abnormality.
Refer to "ENGINE
REMOVAL" on page 5-1.
sensor malfunction ⇒
O
2
Replace the O sensor.
2
Replace the ECU.
8-62
Sensor inspection
procedure
Either start and warm up
the engine, and then rac-
ing it, or reset it with diag-
nostic code D63.