Engine Electrical System

Diagnostic trouble code: P0563 “Overvoltage of system”
Item
No.
Operation procedure
Inspection
results
Follow-up
procedure
1
Connect the diagnostic tester and adaptor
and turn the ignition switch to “OFF”
position.
Proceed to next
step
Yes
Proceed to next
step
2
Inspect with multimeter to verify that the
voltage of battery is about 12V.
No
Replace the
battery.
Yes
Proceed to next
step
3
Start up the engine, and verify that the
charging voltage of generator is maintained
within 9-16V under different speeds.
No
Replace the
generator.
Yes
Refer to diagnosis
help.
4
Verify that the earth point of engine wiring
harness is correct.
No
Repair or replace
the wiring harness.
E-56
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