Chery automobile Service Manual page 190

12) Too high idle speed (the memory has to be restored after ECU's power-off)
Turn the ignition switch to "ON" position.
Inspect with the diagnostic tester to see
1
whether
information record.
Verify that the fastener connected to the
2
accelerator pedal is jammed or too tight.
Verify that the carbon canister control valve,
the fuel pressure regulator, the crankcase
3 forced ventilation vacuum pipe, the brake
system vacuum booster hose are assembled
well or damaged.
Run the engine at idle speed, shift at neutral
4 position, and step on the brake pedal in order
to verify that the idle speed is too high.
Clamp the vacuum booster hose to verify
5
whether the idle speed is normal.
Clamp the crankcase forced ventilation
6 vacuum pipe to verify whether the idle speed
is changed to normal.
Clamp the carbon canister control valve hose
7 to verify whether the idle speed is changed
to normal.
Verify that the idle actuator is inflexible or
8
jammed.
Verify that there is any leakage at other
9
places of air inlet pipe.
Verify that the seal ring of fuel injector is in
10
good condition.
Verify that the absolute pressure sensor of
11 air intake
temperature sensor are in proper conditions.
there is any
manifold and
Yes
malfunction
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
air intake
No
G-81
Fix the indicated
malfunction.
Proceed to next step.
Adjust or replace.
Proceed to next step.
Repair or replace.
Proceed to next step.
Proceed to next step.
Proceed to Step 6
Repair or replace the
vacuum booster.
Proceed to next step.
Replace the PVC
valve
Proceed to next step.
Replace the carbon
canister control
valve.
Proceed to next step.
Repair or replace.
Proceed to next step.
Repair or replace.
Proceed to next step.
Proceed to next step.
Replace the seal
ring.
Replace the ECU.
Replace the sensor.