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

Fault code No.
Item
4 Connection of wire harness
ECU 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).
5 Connection of sub-wire har-
ness 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).
6 Wire harness continuity.
7 Malfunction in ECU.
8 Delete the fault code.
Fault code No. 40
Fault code No.
Item
Fail-safe system
Diagnostic code No.
40 Actuation
Procedure
39
Primary injector: open or short circuit detected.
Improperly connected
nect the coupler securely or
replace the wire harness.
Improperly connected
nect the coupler securely or
replace the wire harness.
Open or short circuit
the wire harness.
Between primary injector cou-
pler and ECU coupler.
Primary injector #1
red/black–red/black
red/blue–red/blue
Primary injector #2
green/black–green/black
red/blue–red/blue
Primary injector #3
blue/black–blue/black
red/blue–red/blue
Primary injector #4
orange/black–orange/black
red/blue–red/blue
Replace the ECU.
Refer to "REPLACING THE
ECU (Engine Control Unit)" on
page 8-180.
40

Secondary 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)
40, 41, 42, 43
Actuates secondary injector #1 five times at one-second intervals.
Illuminates the engine trouble and system warning light.
Check that secondary injector #1 is actuated five times by listening for
the operating sound.
8-78
FUEL INJECTION SYSTEM
Con- Execute the diagnostic mode.
(Code No. 36, 37, 38, 39)
No operating sound
item 5.
Operating sound
8.
Con- Execute the diagnostic mode.
(Code No. 36, 37, 38, 39)
No operating sound
item 6.
Operating sound
8.
Execute the diagnostic mode.
Replace
(Code No. 36, 37, 38, 39)
No operating sound
item 7.
Operating sound
8.
Start the engine and let it idle for
approximately 5 seconds.
Check that the fault code num-
ber is not displayed.
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