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Chery QQ Service Manual Page 52

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CHERY·A21 SERVICE MANUAL ENGINE EFI SYSTEM
52
Yes Next step
2
Check the accumulator voltage by multimeter if it is around
12V.
No
Replace
accumulator
Yes
Repair or
replace cable3
Check if there is open circuit or short circuit to ground
between the circuits of ECU pin No.44, No.45, No.63 and
main relay pin No.87.
No Next step
Yes Next step
4
Start the engine and check if the entire generator recharging
voltage is around 9-16V at the different engine speed.
No
Replace
generator
Yes Diagnosis help
5
Check the engine cable harness contact position if it is in
good conditions.
No
Repair or
replace cable
DTC: P0562 System voltage is too low
No. Operating steps Result Follow up steps
1
Connect the diagnostic tester and commutator, put the
ignition switch to “OFF”.
Next step
Yes Next step
2
Check the accumulator voltage by the multimeter and
observe if it is around 12V.
No
Replace
accumulator
Yes
Repair or
replace cable3
Check if the resistance is over big between the circuits of
ECU pin No.44, No.45, No.63 and main relay pin No.87.
No Next step
Yes Next step
4
Start the engine and check if the entire generator recharging
voltage is around 9-16V at the different engine speed.
No
Replace
generator
Yes Diagnosis help
5
Check the engine cable harness contact position if it is in
good conditions.
No
Repair or
replace cable
DTC: P0563 System voltage is too high
No. Operating steps
Resu
lt
Follow up steps
1
Connect the diagnostic tester and commutator, put the
ignition switch to “OFF”.
Next step
Yes Next step
2
Check the accumulator voltage by the multimeter and
observe if it is around 12V.
No
Replace
accumulator
Yes Next step
3
Start the engine and check if the entire generator
recharging voltage is around 9-16V at the different engine
speed.
No Replace generator
Yes Diagnosis help
4
Check the engine cable harness contact position if it is in
good conditions.
No Repair or replace
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