Chery A21 2005 Service Manual page 363

CHERY·A21 SERVICE MANUAL
Check if there is open circuit or short circuit to ground
6 between 1
DTC: P0202 The 2
No.
Connect the diagnostic tester and commutator, put the
1
Take off the 2
check the voltage value between this joint pin No.1
2
and the power cathode by multimeter and observe if it
Check if there is open circuit or short circuit to ground
3
between the 2
Check the resistance value by multimeter between 2
4 cylinder injector pin No.1 and No.2, and observe if it
Check the voltage value by multimeter between 2
5 cylinder injector pin No.2 and power supply cathode,
Check if there is open circuit or short circuit to ground
6 between 2
DTC: P0203 The 3
No.
Connect the diagnostic tester and commutator, put the
1
Take off the 3
check the voltage value between this joint pin No.1
2
and the power cathode by multimeter and observe if it
Check if there is open circuit or short circuit to ground
3
between the 3
Check the resistance value by multimeter between 3
4 cylinder injector pin No.1 and No.2, and observe if it
Check the voltage value by multimeter between 3
5 cylinder injector pin No.2 and power supply cathode,
6 Check if there is open circuit or short circuit to ground
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and observe if it is around 3.7V.
st
cylinder injector joint pin No.2 and the
ECU pin No.27.
nd
cylinder injector circuit failure
Operating steps
ignition switch to "ON"
nd
cylinder injector joint from the cable,
is 12V.
nd
injector joint pin No.1 and main relay.
is 11-13Ω when it is 20℃.
and observe if it is around 3.7V.
nd
cylinder injector joint pin No.2 and the
ECU pin No.6.
rd
cylinder injector circuit failure
Operating steps
ignition switch to "ON"
rd
cylinder injector joint from the cable,
is 12V.
rd
injector joint pin No.1 and main relay.
is 11-13Ω when it is 20℃.
and observe if it is around 3.7V.
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ENGINE EFI SYSTEM
No
Yes
No
Result
Yes
No
Yes
No
nd
Yes
No
nd
Yes
No
Yes
No
Result
Yes
No
Yes
No
rd
Yes
No
rd
Yes
No
Yes
40
Diagnosis help
Repair or replace
cable
Diagnosis help
Follow up steps
Next step
To step No.4
Next step
Repair or replace
the cable
Next step
Next
Change injector
Diagnosis help
Next step
Repair or replace
cable
Diagnosis help
Follow up steps
Next step
To step No.4
Next step
Repair or replace
the cable
Next step
Next step
Change injector
Diagnosis help
Next step
Repair or replace