What is secondary engine speed sensor?
The secondary engine speed/timing sensor is used to determine when the piston in the No. 1 Cylinder is at the top of the compression stroke. When the timing has been established, the primary engine speed/timing sensor is then used to determine engine speed.
What would happen to the engine if the ECM does not receive a speed timing signal?
If a valid signal is not received from the secondary engine speed/timing sensor, the ECM will default to the primary engine speed/timing sensor. The engine will shut down only if the signals from the primary engine speed/timing sensor and the secondary engine speed/timing sensor are abnormal.
How does the secondary engine timing sensor work?
The secondary engine speed/timing sensor is used to determine when the piston in the No. 1 cylinder is at the top of the compression stroke. The primary engine speed/timing sensor is then used to determine engine speed and the signal from the secondary camshaft sensor is ignored.
How does the speed sensor on a car work?
Your vehicle’s engine speed sensor, or vehicle speed sensor as it is also known, sends information to your car’s computer about how fast the car’s engine is spinning at any particular moment. The sensor does this by recording how fast the crankshaft of your vehicle is spinning.
Where is the primary pulley revolution speed sensor located?
Primary Speed Sensor – This sensor is found in the control valve assembly. It detects the primary pulley revolution speed, generating the ON/OFF pulse in proportion to the rotating body speed. The higher the rotating body speed]
How to tell if you have a faulty engine speed sensor?
However, here is a list of the most common symptoms associated with a bad engine speed sensor: Video Player is loading. This is a modal window. Beginning of dialog window. Escape will cancel and close the window. End of dialog window.