Yamaha Tenere 700 2020, Service Manual

Page: 383 / 472

FUEL INJECTION SYSTEM
8-72
Fault code No. P1601
4 Defective relay unit. Execute the diagnostic mode.
(Code No. 50)
No operating sound
→
Replace
the relay unit.
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 5.
5 Defective relay unit. Execute the diagnostic mode.
(Code No. 09)
Fuel system voltage is below 3
V
→
Replace the relay unit.
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 6.
6 Malfunction in ECU. Replace the ECU.
Refer to “REPLACING THE
ECU (engine control unit)” on
page 8-130. Service is finished.
7 Delete the fault code and check
that the engine trouble warning
light goes off. Confirm that the fault code has
a condition of “Recover” using
the Yamaha diagnostic tool, and
then delete the fault code.
Fault code No. P1601
Item
Sidestand switch: open or short circuit of the black/red lead of the
ECU is detected.
Fail-safe system
Unable to start engine
Unable to drive vehicle
Diagnostic code No. 20
Tool display
Sidestand switch
• “ON” (sidestand retracted)
• “OFF” (sidestand extended)
Procedure Extend and retract the sidestand (with the transmission in gear).
Item
Probable cause of malfunc-
tion and check
Maintenance job
Confirmation of service com-
pletion
1 Connection of sidestand switch
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.
Turn the main switch to “ON”,
and then extend and retract the
sidestand.
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.