Skill Training
1)Ignition Coil Inspection
（1）Table 4.6 Combined with the maintenance manual and circuit diagram,know well about the definition of ignition coil pin,and finish Table 4.6.
Table 4.6 Know Well About the Ignition Coil Pin
（2）Use different methods to finish the single piece inspection of ignition coil and answer the questions.
Use universal meter to test the resistance value of primary coil.
What is the measured value?Is it normal?
________________________，□Yes/□No;
Use universal meter to test the resistance value of secondary coil.
What is the measured value?Is it normal?
________________________，□Yes/□No;
（3）Finish the inspection and diagnosis of ignition coil and wire connection in the car and answer the questions.
Use the diagnostic unit to read the malfunction code and do you get it?If yes,what is it?
□Yes/□No_____________________________
Use the element test function of diagnostic unit to finish the ignition test of one cylinder and observe the working condition changes of the engine.
Is there any change?□Yes/□No.
Use universal meter to test the power source of primary coil.
What is the result?Is it normal?
_________________________________，□Yes/□No.
Use light test pen to test the impulse signal of primary coil.
What is the result?Is it normal?
__________________________________，□Yes/□No.
Use oscilloscope to test the signal wave shape of primary coil and draw it in Fig.4.30.
Is the signal wave shape normal?□Yes/□No.
Fig.4.30 Signal Wave Shape of Primary Coil
Judge whether the performance of ignition coil and its wire connection are good or not and if not,you also need to write down the diagnosed fault.
□Yes/□No.____________________________
2.Crankshaft Position Sensor Inspection
（1）Combined with the maintenance manual and circuit diagram,know well about the crankshaft position sensor,and finish Table 4.7.
Table 4.7 Know Well About the Crankshaft Position Sensor
（2）Use different methods to finish the single piece inspection of crankshaft position sensor and answer the questions.
Use universal meter to test the resistance of the sensor.
What is the measured value?Is it normal?
________________________，□Yes/□No;
Note:The resistance measurement of crankshaft position sensor should be done under the normal temperature.
Use the tool to cut the magnetic circuit of the sensor and use universal meter to test the voltage of the sensor.
What is the measured value?Is it normal?
________________________，□Yes/□No;
（3）Finish the inspection and diagnosis of crankshaft position sensor and wire connection in the car and answer the questions.
Use the diagnostic unit to read the malfunction code and do you get it?If yes,what is it?
□Yes/□No_____________________________
Use oscilloscope to test the signal wave shape of the sensor,and draw it in Fig.4.31.
Is the signal wave shape normal?□Yes/□No.
Fig.4.31 Signal Wave Shape of Crankshaft Position Sensor
Judge whether the performance of crankshaft position sensor and its wire connection are good or not and if not,you also need to write down the diagnosed fault.
□Yes/□No_______________________________________
3)Camshaft Position Sensor Inspection
（1）Combined with the maintenance manual and circuit diagram,know well about the camshaft position sensor,and finish Table 4.8.(https://www.daowen.com)
Table 4.8 Know Well About the Camshaft Position Sensor
（2）Finish the inspection and diagnosis of camshaft position sensor and wire connection in the car and answer the questions.
Use the diagnostic unit to read the malfunction code and do you get it?If yes,what is it?
□Yes/□No______________________________________________
Use the universal meter to test the power line of the sensor.
What is the result?Is it normal?
_________________________________，□Yes/□No.
Use oscilloscope to test the signal wave shape of the sensor and draw it in Fig.4.32.
Is the signal wave shape normal?□Yes/□No.
Fig.4.32 Signal Wave Shape of Camshaft Position Sensor
Judge whether the performance of camshaft position sensor and its wire connection are good or not and if not,you also need to write down the diagnosed fault.
□Yes/□No._____________________________
4)Water Temperature Sensor Inspection
（1）Combined with the maintenance manual and circuit diagram,know well about the water temperature sensor,and finish Table 4.9.
Table 4.9 Know Well About the Water Temperature Sensor
（2）Finish the inspection and diagnosis of water temperature sensor and wire connection in the car and answer the questions.
Use the diagnostic unit to read the malfunction code and do you get it?If yes,what is it?
□Yes/□No______________________________________________
Use the diagnostic unit to read the water temperature of snapshot under certain working conditions.
What is the measured value?Is it normal?
________________________，□Yes/□No;
What is the measured voltage of the sensor signal?Is it normal?
________________________，□Yes/□No;
Judge whether the performance of water temperature sensor and its wire connection are good or not and if not,you also need to write down the diagnosed fault.
□Yes/□No_____________________________
5)Detonation Sensor Inspection
（1）Combined with the maintenance manual and circuit diagram,know well about the detonation sensor,and finish Table 4.10.
Table 4.10 Know Well About the Detonation Sensor
（2）Use different methods to finish the single piece inspection of detonation sensor and answer the questions.
Use universal meter to test the resistance of the sensor.
What is the measured value?Is it normal?
________________________，□Yes/□No;
Use universal meter to test the insulation resistance of the shielding line.
What is the measured value?Is it normal?
________________________，□Yes/□No;
Use the tool to tap the sensor and then use the universal meter to test the sensor’s voltage.
What is the measured value?Is it normal?
________________________，□Yes/□No;
（3）Finish the inspection and diagnosis of detonation sensor and wire connection in the car
Use the diagnostic unit to read the malfunction code and do you get it?If yes,what is it?
□Yes/□No_______________________________________________
Use the diagnostic unit to read the relative snapshot of the sensor.
What is it?Is it normal?
________________________，□Yes/□No;
Judge whether the performance of detonation sensor and its wire connection are good or not and if not,you also need to write down the diagnosed fault.
□Yes/□No_____________________________________________________