Yamaha 2006 YZFR6V, Service Manual

Page: 384 / 444

FUEL INJECTION SYSTEM
8-61
Fault code No. 39 Symptom Open circuit detected in a primary injector.
Diagnostic code No. 36
37
38
39 Primary injector #1
Primary injector #2
Primary injector #3
Primary injector #4
Order Item/components and probable
cause
Check or maintenance job Reinstatement
method
1 Connections
• Primary injector coupler
• Main wire harness ECU coupler
• Sub-wire harness 2 coupler • Check the couplers for any pins
that may be pulled out.
• Check the locking condition of
the couplers.
• If there is a malfunction, repair it
and connect the coupler se-
curely.
Cranking the
engine.
(Connect the
fuel injector
couplers.)
2 Open or short circuit in wire harness
and/or sub-wire harness 2. • Repair or replace if there is an
open or short circuit.
• Between primary injector cou-
pler and ECU coupler.
(red/blue–red/blue)
#1: (red/black–red/black)
#2: (green/black–green/black)
#3: (blue/black–blue/black)
#4: (orange/black–or-
ange/black)
3 Defective primary injector. • Execute the diagnostic mode.
(Code Nos. 36, 37, 38, 39)
• Replace if defective.
Refer to “CHECKING THE PRI-
MARY INJECTORS” on page
7-10.