Chery T21 2014 Service Manual page 395

Engine starts normally, but idle speed is too high
Diagnosis Procedure
1
Check if accelerator pedal is stuck
Adjust or replace accelerator pedal
NG
2
Check intake system and connected vacuum pipe for air leakage
Check and repair intake system
NG
3
Check throttle for carbon deposits
Clean throttle
NG
Disconnect coolant temperature sensor connector, start engine and observe if engine idles
4
normally at this time
Check and repair wire harness or replace
OK
sensor
5
Check engine ignition timing
a. Check if engine ignition timing is as specified.
Check and repair ignition timing
NG
Chery Automobile Co., Ltd.
06 - SQR484F ENGINE MANAGEMENT SYSTEM
OK
06
OK
OK
NG
OK
231
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