Chery T21 2014 Service Manual page 272

06 - SQR484F ENGINE MANAGEMENT SYSTEM
2
Check engine speed sensor signal waveform
a. Turn ignition switch to ON, start the engine and observe the signal waveform of engine speed sensor with
an oscilloscope.
06
Go to step 9
OK
3
Check engine speed sensor connector
a. Turn ignition switch to LOCK.
b. Disconnect engine speed sensor connector E-016.
c. Check engine speed sensor connector.
Repair or replace engine speed sensor
NG
connector
4
Check installation of engine speed sensor
a. Remove engine speed sensor.
b. Check and clean engine speed sensor and installation area, and check for damage, foreign matter or
excessive movement, etc. that cause signal incorrectness.
Clean or replace engine speed sensor
NG
108
06–
Oscilloscope
Normal Waveform of Engine Speed Senor Signal
Chery Automobile Co., Ltd.
RT21060200
NG
OK
OK