Where is the vvt valve of Buick Excelle?

The vvt valve of Buick Excelle is located on the intake camshaft and exhaust camshaft of the engine. The main function of the vvt solenoid valve is to control the left and movement of the slide valve according to the duty ratio signal provided by the engine ECU, so as to control the direction of the oil path leading to the camshaft. If the flow direction of lubricating oil is the same as the rotation direction of camshaft timing gear, the valve opening time will be advanced, and if it is a phase plate, the valve opening time will be delayed.

Quality inspection method of Buick Excelle vvt solenoid valve

Read the fault code If the engine lights the fault indicator, we need to read the fault code first. The common fault codes caused by the damage of vvt valve include the fault of vvt regulating solenoid valve, short circuit of vvt regulating solenoid valve to ground, short circuit of vvt regulating solenoid valve to positive electrode, etc. We need to repair related faults according to the circuit diagram and measure the resistance of vvt solenoid valve. First, unplug the harness connector of the vvt solenoid valve and measure the resistance between the two ends of the VVT solenoid valve. At room temperature, the resistance of the solenoid valve is 6 to 7 ohms. If the measured resistance is too large