Yamaha Tenere 700 2020, Service Manual

Page: 382 / 472

FUEL INJECTION SYSTEM
8-71
09
Tool display
Fuel system voltage (battery voltage)
Approximately 12.0
Procedure
Set the engine stop switch to “ ”, and then compare the actually mea-
sured battery voltage with the tool display value. (If the actually mea-
sured battery voltage is low, recharge the battery.)
50
Actuation
Actuates the relay unit five times at one-second intervals.
The indicator on the Yamaha diagnostic tool screen come on each time
the relay is actuated.
Procedure
Check that the relay unit is actuated five times by listening for the operat-
ing sound.
Item
Probable cause of malfunc-
tion and check
Maintenance job
Confirmation of service com-
pletion
1 Connection of relay unit 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). Improperly connected
→
Con-
nect the coupler securely or re-
place the wire harness.
Start the engine and let it idle for
approximately 5 seconds.
Check the condition of the fault
code using the malfunction
mode of the Yamaha diagnostic
tool.
Condition is “Recover”
→
Go to
item 7 and finish the service.
Condition is “Malfunction”
→
Go
to item 2.
2 Connection of 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). Improperly connected
→
Con-
nect the coupler securely or re-
place the wire harness.
Start the engine and let it idle for
approximately 5 seconds.
Check the condition of the fault
code using the malfunction
mode of the Yamaha diagnostic
tool.
Condition is “Recover”
→
Go to
item 7 and finish the service.
Condition is “Malfunction”
→
Go
to item 3.
3 Wire harness continuity. Open or short circuit
→
Replace
the wire harness.
Between relay unit coupler and
ECU coupler.
red/blue–red/blue
blue/yellow–blue/yellow
Between relay unit coupler and
joint coupler.
red/white–red/white
Between joint coupler and igni-
tion fuse.
red/white–red/white
Between ignition fuse and main
switch coupler.
brown/blue–brown/blue
Between main switch coupler
and starter relay (main fuse)
coupler.
red–red
Between starter relay (main
fuse) coupler and battery termi-
nal.
red–red
Start the engine and let it idle for
approximately 5 seconds.
Check the condition of the fault
code using the malfunction
mode of the Yamaha diagnostic
tool.
Condition is “Recover”
→
Go to
item 7 and finish the service.
Condition is “Malfunction”
→
Go
to item 4.