Circuit/System Description
WARNING: This page is about a different car, the 2024 Chevrolet Equinox. 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 |
|---|---|
| Signal | The control module input circuit has an internal resistance connected to 12 V. |
| Low Reference | Grounded through the control module. |
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| Component | Description |
|---|---|
| B15 Transmission Internal Mode Switch | The assembly contains 5 individual switches. |
| K20 Engine Control Module | The control module contains a microprocessor used to process input data to control outputs. |
| K71 Transmission Control Module | 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. |
The control module K71 uses 4 of the switches as inputs to determine the gear selector lever position. The control module K20 uses 1 of the switches as an input to determine when the transmission is in park or neutral for engine starting.