Chery A21 2005, Руководство по обслуживанию, Страница: 363 / 475

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