Chery automobile Service Manual page 162

Diagnostic trouble code: P0511 "Malfunction in control circuit of idle speed
regulator"
Item
Operation procedure
No.
Connect the
1 adaptor, and turn the ignition switch to
"ON" position.
Disconnect the connector of idle speed
regulator and inspect with multimeter to
2 verify that the resistances between pin A
and D, pin B and C are 53±5.3Ω under
20 .
Verify that the circuits between pin A, B,
3 C, and D of idle speed regulator and 65#,
66#, 67#, and 64# pin of ECU are open.
diagnostic tester
G-53
Inspection
Follow-up procedure
results
and
Proceed to next step.
Yes Proceed to next step.
No
Repair or replace the
Yes
Refer to diagnosis
No
Replace the step
motor.
wiring harness.
help.