Yamaha FJR1300A(D) - Page 512

FUEL INJECTION SYSTEM
8-63
2 Connection of injector #1,
#2, #3, and/or injector #4
coupler.
Check the locking condition
of the coupler.
Disconnect the coupler and
check the pins (bent or bro-
ken terminals and locking
condition of the pins).
Improperly connected →
Connect the coupler secure-
ly or replace the wire har-
ness.
Execute the diagnostic
mode. (Code Nos. 36, 37,
38, 39)
No operating sound → Go to
item 3.
Operating sound → Go to
item 7.
3 Defective injector #1, #2, #3,
and/or injector #4.
Measure the injector resis-
tance.
Replace if out of specifica-
tion.
Refer to “CHECKING THE
FUEL INJECTORS” on page
8-191.
Execute the diagnostic
mode. (Code Nos. 36, 37,
38, 39)
No operating sound → Go to
item 4.
Operating sound → Go to
item 7.
4 Connection of wire harness
ECU coupler.
Check the locking condition
of the coupler.
Disconnect the coupler and
check the pins (bent or bro-
ken terminals and locking
condition of the pins).
Improperly connected →
Connect the coupler secure-
ly or replace the wire har-
ness.
Execute the diagnostic
mode. (Code Nos. 36, 37,
38, 39)
No operating sound → Go to
item 5.
Operating sound → Go to
item 7.
5 Wire harness continuity. Open or short circuit → Re-
place the wire harness.
Between injector coupler and
ECU coupler.
Injector #1
red/black–red/black
Injector #2
green/black–green/black
Injector #3
blue/black–blue/black
Injector #4
orange/black–orange/black
Between injector coupler and
joint coupler.
red/blue–red/blue
Between joint coupler and
ECU coupler.
red/blue–red/blue
Execute the diagnostic
mode. (Code Nos. 36, 37,
38, 39)
No operating sound → Go to
item 6.
Operating sound → Go to
item 7.
6 Malfunction in ECU. Replace the ECU.
Refer to “REPLACING THE
ECU (engine control unit)” on
page 8-174.
7 Delete the fault code. Start the engine and let it idle
for approximately 5 seconds.
Check that the fault code
number is not displayed.
Fault code No. 39
Item Injector: open or short circuit detected.