Circuit/System Description
WARNING: This page is about a different car, the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Cadillac Escalade ESV, and 2018 Cadillac Escalade. 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 |
|---|---|
| B14DB Transmission Intermediate Speed Sensor 2 | 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 the current, while the voltage stays constant. The control module detects the frequency in which the current changes, which is proportional to the rotational speed. |
| 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 Carrier Internal Gear Transfer Shell