Primary Injector: Open Or Short Circuit Detected - Yamaha R1 Series 2015 Service Manual

Fault code No. 39
Fault code No.
Item
Fail-safe system
Diagnostic code No.
36 Actuation
Procedure
Actuation
37
Procedure
Actuation
38
Procedure
39 Actuation
Procedure
Item Probable cause of
malfunction and check
1 Identify the malfunctioning pri-
mary injector.
2 Connection of primary injector
coupler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins).
3 Defective primary injector.
39

Primary injector: open or short circuit detected.

Able to start engine (depending on the number of faulty cylinders)
Able to drive vehicle (depending on the number of faulty cylinders)
36, 37, 38, 39
Actuates primary injector #1 five times at one-second intervals.
Illuminates the engine trouble and system warning light.
Check that primary injector #1 is actuated five times by listening for the
operating sound.
Actuates primary injector #2 five times at one-second intervals.
Illuminates the engine trouble and system warning light.
Check that primary injector #2 is actuated five times by listening for the
operating sound.
Actuates primary injector #3 five times at one-second intervals.
Illuminates the engine trouble and system warning light.
Check that primary injector #3 is actuated five times by listening for the
operating sound.
Actuates primary injector #4 five times at one-second intervals.
Illuminates the engine trouble and system warning light.
Check that primary injector #4 is actuated five times by listening for the
operating sound.
Maintenance job
Execute the diagnostic mode.
(Code No. 36, 37, 38, 39)
Identify the primary injector that
does not produce an operating
sound.
Perform the following proce-
dures for the defective primary
injector.
Refer to "CHECKING THE
FUEL INJECTORS" on page
8-196.
Improperly connected
nect the coupler securely or
replace the wire harness.
Measure the primary injector
resistance.
Replace if out of specification.
Refer to "CHECKING THE
FUEL INJECTORS" on page
8-196.
8-77
FUEL INJECTION SYSTEM
Confirmation of service com-
Con- Execute the diagnostic mode.
(Code No. 36, 37, 38, 39)
No operating sound
item 3.
Operating sound
8.
Execute the diagnostic mode.
(Code No. 36, 37, 38, 39)
No operating sound
item 4.
Operating sound
8.
pletion
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