Chery A21 2005 Service Manual page 367

CHERY·A21 SERVICE MANUAL
DTC: P0343 Much higher voltage of the phase sensor
No.
Connect the diagnostic tester and commutator, put the
1
Take off the phase sensor joint from the cable; check
the voltage value by multimeter between phase sensor
2
joint pin No.3 and No.1; and observe if it is around
Check if there is open circuit or short circuit to ground
between circuit of phase sensor joint pin No.3 and main
3
relay pin No.87; check if there is bad contact of phase
Check the voltage if it is around 9.9V between phase
4
sensor joint pin No.2 and power supply cathode.
Check if there is open circuit or short circuit to power
5 supply or to ground between the circuit of phase sensor
6
DTC: P0443 Canister control valve drive grade control circuit failure
No.
Connect the diagnostic tester and commutator, put the
1
Take off the canister control valve joint from the cable;
check the voltage value by multimeter between this
2
joint pin No.1 and power supply cathode; and observe
Check if there is open circuit or short circuit to ground
3
of the canister control valve power supply ends circuit.
Check the resistance value if it is around 22-30Ωwhen
4 it is 20℃ between canister control valve pin No.1 and
Check the voltage if it is around 3.7V between canister
5
control valve joint pin No.1 and power supply cathode.
Check if there is open circuit between the circuit of
6
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Operating steps
ignition switch to "ON"
12V.
sensor connector No.1.
joint pin No.2 and ECU pin No.79.
Check the camshaft signal disc if it is in good
conditions.
Operating steps
ignition switch to "ON"
if it is around 12V.
pin No.2.
canister joint pin No.2 and ECU pin No. 46.
44
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ENGINE EFI SYSTEM
Result Follow up steps
Next step
Yes To step No.4
No Next step
Repair or replace
Yes
the cable
No Next step
Yes To step 6
No Next step
Repair or replace
Yes
cable
No Next step
Yes Diagnosis help
Replace signal
No
disc
Result Follow up steps
Next step
Yes To step No.4
No Next step
Repair or replace
Yes
the cable
No To step No.2
Yes Next step
No Replace the valve
Yes Diagnosis help
No Next step
Repair or replace
Yes
cable
No Diagnosis help