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Home >> Chevrolet >> 2018 >> Equinox L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Automatic Transmission - 9T45 (M3U) Or 9T50 (M3D M3H) - Description And Operation) >> Description And Operation >> Electronic Component Description >> ETRS Equipped Electronic Component Description

ETRS Equipped Electronic Component Description

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

Transmission Range Control Valve Switch 

The transmission range control valve switch is a linear hall effect sensor that changes current flow based on magnetic field position relative to the sensor. The transmission control module (TCM) supplies a 9 V reference circuit to the transmission range control valve switch. Sensor signal circuit is an input to the TCM. The sensor signal circuit toggles between 0.8V and 2V based on valve position.

Park Inhibit Solenoid Actuator 

The park inhibit solenoid actuator (PISA) is an actuator that when energized, will lock the park servo in the applied position, holding the parking pawl out of the park position.

Transmission Park Valve Switch 

The transmission park valve switch is a linear hall effect sensor that changes current flow based on magnetic field position relative to the sensor. The transmission control module (TCM) supplies a 9 V reference circuit to the transmission park valve switch. Sensor 1 signal circuit and sensor 2 signal circuits both toggle between 0.8V and 2V based on valve position. There are two sensors within the component to serve as a redundancy for safety.

ETRS Component Name Correlation Chart 

Component Code Function Scan Tool Parameter - in TCM unless specified Units
B13 Transmission Fluid Temperature Sensor Oil Temperature Transmission Fluid Temperature Degrees
B14A Transmission Output Shaft Speed Sensor Output Shaft Speed - Park Gear Transmission OSS RPM
"B14E Transmission Input/Intermediate Shaft Speed Sensor
- Includes B14C Input Shaft Speed Sensor and B14D Intermediate Shaft Speed Sensor"
Input Shaft Speed - Transmission ISS RPM
Intermediate Shaft Speed Transmission Intermediate Speed Sensor RPM
B280 Automatic Transmission Accumulator Solenoid Valve Accumulator - Autostop Transmission Accumulator Solenoid Valve Command - ECM On/Off
B315A Transmission Range Control Valve 1 Position Switch Mode Valve 1/A Position Sensor Transmission Range Sensor 1 Volts
B315B Transmission Range Control Valve 2 Position Switch Mode Valve 2/B Position Sensor Transmission Range Sensor 2 Volts
B316 Transmission Park Valve Position Switch Park Valve Position Sensor 1 Transmission Park Valve Position Sensor 1 Volts
Park Valve Position Sensor 2 Transmission Park Valve Position Sensor 2 Volts
Q77A Transmission Control Solenoid Valve 1 CB123456 - LFS Transmission Control Solenoid Valve 1 Pressure
Q77B Transmission Control Solenoid Valve 2 CB29 - LFS Transmission Control Solenoid Valve 2 Pressure
Q77C Transmission Control Solenoid Valve 3 CB38 - VFS Transmission Control Solenoid Valve 3 Pressure
Q77D Transmission Control Solenoid Valve 4 C4 - VFS Transmission Control Solenoid Valve 4 Pressure
Q77E Transmission Control Solenoid Valve 5 C57R - LFS Transmission Control Solenoid Valve 5 Pressure
Q77F Transmission Control Solenoid Valve 6 SOWC - C5789 - LFS Transmission Control Solenoid Valve 6 Pressure
Q77G Transmission Control Solenoid Valve 7 Line - VFS Transmission Control Solenoid Valve 7 Pressure
Q77H Transmission Control Solenoid Valve 8 TCC - VFS Transmission Control Solenoid Valve 8 Pressure
Q77J Transmission Control Solenoid Valve 9 Clutch Select Transmission Control Solenoid Valve 9 On/Off
Q77K Transmission Control Solenoid Valve 10 Accumulator Pressure Release Transmission Control Solenoid Valve 10 On/Off
M123 Transmission Park Valve Lock Solenoid Actuator Park Inhibit Solenoid Actuator Transmission Control Solenoid Valve 11 On/Off
LFS - Linear Force Solenoid
VFS - Variable Force Solenoid