Chery automobile Service Manual page 152

Diagnostic trouble code: P0443 "Malfunction in control circuit of drive stage of
carbon canister control valve"
Item
No.
Connect the diagnostic tester and adaptor, and
1
turn the ignition switch to "ON" position.
Disconnect the connector of carbon canister
control valve on the wiring harness, inspect
2
with multimeter to verify that the voltage
between 1# pin of this connector and the
negative grid of power supply is about 12V.
Verify that the power supply circuit of carbon
3 canister control valve is open or short to
ground.
Inspect with multimeter to verify that the
resistance between 1# and 2# pins of carbon
4
canister control valve is within 22-30Ω under
20 .
Inspect with multimeter to verify that the
voltage between 1# pin of carbon canister
5
control valve connector and the negative grid
of power supply is about 3.7V.
Verify that the circuit between 2# pin of
6 carbon canister control valve connector and
46# pin of ECU is open.
Operation procedure
G-43
Inspection Follow-up
results procedure
Proceed to next
step.
Proceed to Step
Yes
4
Proceed to next
No
step.
Repair or
Yes replace the
wiring harness.
Proceed to Step
No
2
Proceed to next
Yes
step.
Replace the
No
control valve.
Refer to
Yes
diagnosis help.
Proceed to next
No
step.
Repair or
Yes replace the
wiring harness.
Refer to
No
diagnosis help.