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Home >> Chevrolet >> 2018 >> Equinox L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (Automatic Transmission - 9T45 (M3U) Or 9T50 (M3D M3H) - Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> DTC P176B, P176C, P176D, P178F, P17C4 Or P17D3: Intermediate Speed Sensor Circuit/Intermediate Speed Sensor Direction >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different variant/trim than selected.

For an overview of the component/system, refer to Electronic Component Description

Circuit Description
5 V Reference Regulated voltage supplied by the control module.
Signal The sensor produces a frequency modulated signal.
Component Description
B14C Transmission Input 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 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 reluctor ring has 56 teeth, magnetic segments, or indentations.
  • The reluctor ring is part of the component: 3-8 and 5-7-R clutch hub assembly

The sensor is an input to the control module K71. The input signal is used to determine the rotational speed of the component: 3-8 and 5-7-R clutch hub assembly