Operation Manual

FUEL INJECTION SYSTEM
8-63
TIP
If fault codes 37 and 46 are indicated simultaneously, take the actions specified for fault code 46
first.
Fault code No. 46
Item Incorrect voltage is supplied to the ECU.
Fail-safe system
Able to start engine
Able to drive vehicle
Diagnostic code No. —
Meter display —
Procedure —
Item/components and
probable cause
Check or maintenance job
Sensor inspection proce-
dure
1 Charging system malfunction Check the charging system.
Refer to “CHARGING SYS-
TEM” on page 8-11.
Check the rectifier/regulator,
AC magneto and wire har-
ness. → Replace if defective.
Start and idle the engine for
approximately 5 seconds.
Then, check the fault code
indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Recheck.
Fault code No. 50
Item
Faulty ECU memory. (When this malfunction is detected in the ECU,
the fault code number might not appear on the meter.)
Fail-safe system
Unable to start engine
Unable to drive vehicle
Diagnostic code No. —
Meter display —
Procedure —
Item/components and
probable cause
Check or maintenance job
Sensor inspection proce-
dure
1 ECU malfunction Replace the ECU. Place the main switch to the
ON position.
Then, check that no fault
code indicated.