FI
FUEL INJECTION SYSTEM
6-24
Fault
code No.
33
Symptom
Primary lead of the ignition coil: open circuit detected.
Diagnostic code No. D30
Ignition coil
Order
Item / components and
probable cause
Check or maintenance job
Reinstatement
method
1
Connections
•
Ignition coil connection
(primary coil side)
•
Main wire harness ECU
coupler
•
Check the connector and coupler for any
pins that may be pulled out.
•
Check the locking condition of the
connector and coupler.
•
If there is a malfunction, repair it and
connect the coupler securely.
2
Open short circuit in wire
harness and/or sub lead.
•
Repair or replace if there is an open or short
circuit
•
Between ignition coil connector and ECU
coupler/main wire harness.
(Orange-Orange)
3
Defective ignition coil.
•
Execute the diagnostic mode. (Code No.
D30).
•
Test the primary and secondary coils for
continuity.
•
Replace if defective.
Refer to “IGNITION SYSTEM”.
Starting the
engine and
operating it at idle.
Fault
code No.
39
Symptom
Open or short circuit detected in fuel injector.
Diagnostic code No. D36
Fuel injector
Order
Item / components and
probable cause
Check or maintenance job
Reinstatement
method
1
Connections
•
Fuel injector coupler
•
Main wire harness ECU
coupler
•
Ckeck the couplers for any pins that may
pulled out.
•
Check the locking condition of the couplers
•
It there is a malfunction, repair it and
connect the coupler securely.
2
Open or short circuit in
wire harness
•
Repair or replace if there is an open or
short circuit.
•
Between ignition coil connector and ECU
coupler
Brown / Red- Red / Blue
Orange / Black– Orange / Black
3
Defective primary
injector.
•
Execute the diagnostic mode. (Code no.
D36).
•
Replace if defective.
Refer to "CHECKING THE FUEL
INJECTOR".
Reinstated by
starting the engine
and operating it at
idle.
Summary of Contents for YBR250 2007
Page 1: ...YBR250 SERVICE MANUAL 5D1 F8197 E0 2007 ...
Page 2: ......
Page 359: ...YAMAHA MOTOR DA AMAZÔNIA LTDA ...
