6-64
–
+
ELEC
Fault code No.
P1602
Symptoms
The ECU cannot record vehicle status (Throttle opening, O2FB learn-
ing value, etc.).
Diagnostic code No.
Item
Item and components and
probable cause
Actions
Confirmation procedure after
actions
1
Able/Unable to start with a self-
starter.
Repeat the main switch ON
start with a self-starter
main
switch OFF twice.
Cannot start with a self-starter
Perform the procedure in item
2.
If you can start with a self-start-
er, check the condition of the
fault code in diagnostic mode of
the Yamaha diagnostic tool.
Condition is Recovered
Go to
item 7 and finish the service.
Condition is Detected
Go to
item 6.
2
Discharged battery
Charge the battery.
If the battery cannot be
charged, replace the battery.
After charging the battery, per-
form the procedure in item 1
again.
Cannot start with a self-starter
Perform the procedure in item
3.
If you can start with a self-start-
er, check the condition of the
fault code in diagnostic mode of
the Yamaha diagnostic tool.
Condition is Recovered
Go to
item 7 and finish the service.
Condition is Detected
Go to
item 6.
3
Check the connection of the
battery terminals and lead.
Connect the battery terminals to
the lead so that the screws are
not loose and the terminals do
not come off.
Repeat turning the main switch
ON
start with a self-starter
main switch OFF twice, then
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 4.
4
Harness continuity.
Open or short circuit
Replace
the harness.
Between ECU and the battery
Repeat turning the main switch
ON
start with a self-starter
main switch OFF twice, then
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.
B9X-F8197-E0.book Page 64 Thursday, July 16, 2020 2:28 PM
Summary of Contents for FZ 25 2021
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Page 7: ...B9X F8197 E0 book Page 6 Thursday July 16 2020 2 28 PM ...
Page 9: ...GEN INFO B9X F8197 E0 book Page 2 Thursday July 16 2020 2 28 PM ...
Page 35: ...1 26 GEN INFO B9X F8197 E0 book Page 26 Thursday July 16 2020 2 28 PM ...
Page 37: ...SPEC B9X F8197 E0 book Page 2 Thursday July 16 2020 2 28 PM ...
Page 89: ...CHAS B9X F8197 E0 book Page 1 Thursday July 16 2020 2 28 PM ...
Page 121: ...ENG B9X F8197 E0 book Page 1 Thursday July 16 2020 2 28 PM ...
Page 128: ...5 7 ENG B9X F8197 E0 book Page 7 Thursday July 16 2020 2 28 PM ...
Page 238: ...TRBL SHTG B9X F8197 E0 book Page 2 Thursday July 16 2020 2 28 PM ...
Page 243: ...7 5 TRBL SHTG TROUBLESHOOTING B9X F8197 E0 book Page 5 Thursday July 16 2020 2 28 PM ...
Page 245: ...B9X F8197 E0 book Page 1 Thursday July 16 2020 2 28 PM ...
Page 247: ...B9X F8197 E0 87 7 B9X F8197 E0 book Page 2 Thursday July 16 2020 2 28 PM ...