Maintenance Manual for J2 Sedan
Electronic Control System
of Engine
223
Fault code: P0560 “the voltage signal of system battery is unreasonable”
S/N
Step
Check result
Subsequent step
1
Connect the diagnosis device and adapter, and turn the ignition switch
to OFF position.
Next step
Yes
Next step
2
Check if the battery voltage is about 12V by the multimeter.
No
Replace the
battery
Yes
Repair or replace
the harness
3
Check if the circuits connecting Pin 8# and 51# of ECU respectively
to Pin 87# of main relay are open or short to ground.
No
Next step
Yes
Next step
4
Start the engine, and check if the charging voltage of generator is
always between 9V and 16V within different rotation speed ranges.
No
Replace the
generator
Yes
Diagnosis help
5
Check if the grounding point of engine harness is good.
No
Repair or replace
the harness
Fault code: P0562 “the voltage of system battery is too low”
S/N
Step
Check result
Subsequent step
1
Connect the diagnosis device and adapter, and turn the ignition switch
to OFF position.
Next step
Yes
Next step
2
Check if the battery voltage is about 12V by the multimeter.
No
Replace the
battery
Yes
Repair or replace
the harness
3
Check if the resistances of circuits connecting Pins 8# and 51# of
ECU to Pin 87# of main relay are too high.
No
Next step
Yes
Next step
4
Start the engine, and check if the charging voltage of generator is
always between 9V and 16V within different rotation speed ranges.
No
Replace the
generator
Yes
Diagnosis help
5
Check if the grounding point of engine harness is good.
No
Repair or replace
the harness
Fault code: P0563 “the voltage of system battery is too high”
S/N
Step
Check result
Subsequent step
1
Connect the diagnosis device and adapter, and turn the ignition switch
to OFF position.
Next step
Yes
Next step
2
Check if the battery voltage is about 12V by the multimeter.
No
Replace the
battery
3
Start the engine, and check if the charging voltage of generator is
Yes
Next step