1,Automotive Testing EquipmentCrankshaft Position Sensor

Automobile crankshaft position sensors are generally mounted on the side of the crankshaft pulley or sprocket, and some are mounted on the front, distributor or flywheel of the camshaft.

Automotive Crankshaft Position Sensor detection:

1) Open circuit detection: Turn off the ignition switch, unplug the sensor plug, with multimeter Rx10 European block measurement induction coil resistance value, generally 300-1500 euros.

2) Dynamic detection: 1) Use multimeter AC voltage file to measure its output voltage, starting from 0.1V, working time is 0.4-0.8V, using frequency meter to measure its operating frequency. The voltage signal is then measured with a multimeter and the signal waveform is detected with an oscilloscope.

2, the car testing equipment throttle position sensor

In order to meet the requirements of different working conditions, the sensor installed in the throttle body of the electrically controlled gasoline injection system is collectively referred to as the throttle position sensor.

Determine Throttle position sensor:

3,Linear output throttle position sensor detection

1) Static detection: Use Multimeter to detect the resistance value of each terminal compared with the standard value. Condition detection: The ignition switch does not start the generator to detect whether each terminal is connected.

2) Dynamic detection: First detect the end voltage and conductivity of the wire bundle, turn on the ignition switch, measure the voltage signal and ECU output and the standard value comparison.

4,Detection of switch-output throttle position sensor

1) Static detection: Turn off the spark plug, remove the sensor wire harness, with a multimeter to detect the resistance value of each end.

2) Dynamic detection: line conductivity of the current detection to the ignition switch, with the multimeter voltage file test power supply voltage, in the engine idling began to measure the signal voltage power contact point.

5、Automotive Testing EquipmentInlet manifold pressure Sensor

The pressure sensor of automobile inlet pipe is divided into voltage type automobile inlet pipe pressure sensor (semiconductor piezoresistive type, membrane box type transmission), frequency type automobile inlet pipe pressure sensor (capacitive type, surface elastic wave type).

The automotive intake manifold pressure sensor is mounted on the intake manifold, engine compartment and engine computer.

Vehicle intake manifold pressure sensor detection:

1) Open circuit detection: Turn off the ignition switch, unplug the sensor plug, use the multimeter ohm block pressure to measure the resistance value of the dynamic resistance of each terminal.

2) When using a multimeter to detect different types of signals, different gears should be used. The voltage signal adopts DC voltage block, and the frequency signal adopts frequency block. Unplug the intake pressure sensor Plug and turn on the ignition switch. The voltage between the VCC and E2 terminals on the cable plug should be 4.5-5.5 v. If there is no voltage, check the circuit and ECU between the ECU and the sensor. Plug back, remove the vacuum hose from the sensor, turn on the ignition switch, and measure the output voltage at the upper end of the electronic control Unit connector under atmospheric pressure.

6, Traffic sensor

Vehicle flow sensor is divided into traffic sensor and vehicle mass flow sensor. Installed in air filters, throttle, inlet pipe and other locations.

1) Vehicle flow sensor detection:

Static detection: multimeter to measure the resistance value of each end, guide the state dynamic detection of ignition switch, airflow size measurement of the corresponding resistance value.

Measuring the power supply voltage ignition switch cannot use a multimeter to measure the end voltage to start the engine.

Measuring the power supply voltage ignition switch cannot use a multimeter to measure the end voltage to start the engine.

2) Vehicle quality flow sensor detection

Static detection: Use a multimeter to detect the resistance value of each terminal, not the standard value.

Dynamic detection: The ignition switch does not start the generator to detect changes in the conductivity of each terminal.

7, Car water temperature sensor

The vehicle water temperature sensor detects the temperature of the engine cooling water and enters the temperature signal as the control signal of other control systems into the electronic control unit to obtain the correct fuel injection and ignition timing signal. It is usually mounted on engine cylinders, cylinder heads and pipe fittings.

Vehicle water temperature Sensor detection

1) Static multimeter measures the resistance value of each end, dynamically detects the change of resistance with temperature.

2) Unplug the sensor cable, turn on the ignition switch, determine whether the ECU power supply is 5 V, and then measure its signal end voltage.

8、Automotive Testing EquipmentCamshaft Position Sensor

The camshaft position sensor uses the gas to collect the position signal of the camshaft and input it to identify the stop point of the cylinder compression, so as to carry out sequential injection control, ignition time control and detonation control. Mounted on the camshaft.

Camshaft Position Sensor detection

Turn off the ignition switch, unplug the wire connector of the cam position sensor, and measure the resistance value between the cam position sensor terminals with the resistor file of the multimeter. If the resistance value exceeds the specified range, the crankshaft position sensor must be replaced.