Yamaha MTN1000 2016 Service Manual page 518

Fault code No.
Item
4 Wire harness continuity.
5 Defective sidestand switch.
6 Malfunction in ECU.
7 Delete the fault code and check
that the engine trouble warning
light goes off.
Fault code No. P1602
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Tool display
Procedure
Probable cause of malfunc-
Item
tion and check
1 Installed condition of battery
leads. Check the installed con-
dition of the battery and battery
leads (loose bolts).
P1601
Sidestand switch: open or short circuit of the blue/yellow lead of the
ECU is detected.
Open or short circuit  Replace
the wire harness.
Between relay unit coupler and
ECU coupler.
blue/yellow–blue/yellow
Between relay unit coupler and
sidestand switch coupler.
blue/black–blue/black
Execute the diagnostic mode.
(Code No. 20)
Shift the transmission into gear.
Sidestand retracted: "ON"
Sidestand extended: "OFF"
Replace if defective.
Replace the ECU.
Refer to "REPLACING THE
ECU (Engine Control Unit)" on
page 8-194.
Confirm that the fault code has
a condition of "Recovered"
using the Yamaha diagnostic
tool, and then delete the fault
code.
P1602
Malfunction in ECU internal circuit (malfunction of ECU power cut-
off function).
Able/Unable to start engine
Able/Unable to drive vehicle
—
—
—
Maintenance job
Improperly installed battery or
battery leads  Reinstall or
replace the battery leads.
8-101
FUEL INJECTION SYSTEM
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 "Recovered"  Go
to item 7 and finish the service.
Condition is "Detected"  Go to
item 5.
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 "Recovered"  Go
to item 7 and finish the service.
Condition is "Detected"  Go to
item 6.
Service is finished.
Confirmation of service com-
Turn the main switch to "ON",
and then check the condition of
the fault code using the mal-
function mode of the Yamaha
diagnostic tool.
Condition is "Recovered"  Go
to item 7 and finish the service.
Condition is "Detected"  Go to
item 2.
pletion