![Yamaha YBR250 2007 Service Manual Download Page 296](http://html.mh-extra.com/html/yamaha/ybr250-2007/ybr250-2007_service-manual_946314296.webp)
FI
6-23
FUEL INJECTION SYSTEM
Fault
code
No. 32
Symptom
The amount of air-fuel ratio feedback compensation is
maintained continuously in the vicinity of lower limit (air-fuel
ratio is rich).
Diagnostic code No.
—
—
Order
Item / components and
probable cause
Check or maintenance job
Reinstatement
method
1
Installed state of O
2
sensor Check for looseness or pinching.
2
Connections:
•
O
2
sensor coupler
•
Main wire harness ECU
coupler
•
Check the coupler for any pins that may
be pulled out.
•
Check the locking condition of the coupler
•
If there is a malfunction, repair it and
connect the coupler securely
3
Open or short circuit in
wire harness
•
Repair or replace if there is an open or
short circuit.
•
Between O
2
sensor coupler and ECU
coupler
Gray / Red - Blue
Red / Blue - Black.
4
Check fuel pressure
Refer to “THROTTLE BODY”.
5
Defective O
2
sensor.
(Unable to out a lean
signal)
Replace if defective.
Reinstated by
starting the
engine operating it
at idle 15 minutes
and running at 80
km/h until the
warning light turns
off.
Summary of Contents for YBR250 2007
Page 1: ...YBR250 SERVICE MANUAL 5D1 F8197 E0 2007 ...
Page 2: ......
Page 359: ...YAMAHA MOTOR DA AMAZÔNIA LTDA ...