Circuit/System Description
WARNING: This page is about a different car, the 2023 GMC Sierra 3500 HD and 2023 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
For an overview of the component/system, refer to:Electronic Component Description
| Circuit | Description |
|---|---|
| 9 V Reference | Regulated voltage supplied by the control module. |
| Signal | The sensor produces a frequency modulated signal. |
| Component | Description |
|---|---|
| B14A Transmission Output Shaft Speed Sensor | The sensor contains a hall-effect sensor and additional electronics that processes the signal. It detects the change of strength of the magnetic field caused by the reluctor ring. When the strength changes, the sensor changes the amount of current it consumes. This results in a square wave signal of current and voltage. The control module detects the frequency in which the signal changes, which is proportional to the rotational speed. |
| K20 Engine Control Module | The control module contains a microprocessor used to process input data to control outputs.The control module controls a series of actuators to ensure optimal engine performance. The control module does this by reading values from a variety of sensors, interprets the data and adjusts the engine actuators accordingly. |
| K71 Transmission Control Module | The control module contains a microprocessor used to process input data to control outputs.The control module receives information from a variety of sensors, switches and serial data information from other control modules. This information is used to control a combination of solenoid valves to obtain the correct line pressure, gear ratio and torque converter clutch operation. |
| Reluctor Ring |
|
The sensor is an input to the control module K71.The input signal is used to determine the rotational speed of the component:Output Shaft Assembly