ETRS Equipped Electronic Component Description
B315A Transmission Range Control Valve 1 Position Switch/B315B Transmission Range Control Valve 2 Position 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.
M123 Transmission Park Valve Lock 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.
B316 Transmission Park Valve Position 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.
Component Name Correlation Chart
| Component Code | Control/Signal Circuit Number | Circuit Function Name | Function | Scan Tool Parameter - in TCM unless specified | Units |
|---|---|---|---|---|---|
| B13 Transmission Fluid Temperature Sensor | 585 | Transmission Oil Temperature Signal | Oil Temperature | Transmission Fluid Temperature | Degrees |
| B14A Transmission Output Shaft Speed Sensor | 6358 | Output Speed Signal | 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 |
6353 - B14C | Input Speed Signal | Input Shaft Speed - | Transmission ISS | RPM |
| 4510 - B14D | Transmission Intermediate Speed Signal | Intermediate Shaft Speed | Transmission Intermediate Speed Sensor | RPM | |
| B15 Transmission Internal Mode Switch - Non ETRS Only | 5724 | Ignition Mode Switch Mode Control | Transmission Range Sensor 1 - ECM | Transmission Range Sensor 1 | % |
| 5726 | Ignition Mode Switch Mode Control Backup | Transmission Range Sensor 2 - TCM | Transmission Range Sensor 2 | % | |
| B280 Automatic Transmission Accumulator Solenoid Valve | 4578 | Surge Accumulator Solenoid Low Side Control | Accumulator - Autostop | Transmission Accumulator Solenoid Valve Command - ECM | On/Off |
| B315A Transmission Range Control Valve 1 Position Switch - ETRS Only | 3706 | ETRS Analog Switch 1 | Mode Valve 1/A Position Sensor | Transmission Range Control Valve 1 Position Switch | Volts |
| B315B Transmission Range Control Valve 2 Position Switch - ETRS Only | 3705 | ETRS Analog Switch 2 | Mode Valve 2/B Position Sensor | Transmission Range Control Valve 2 Position Switch | Volts |
| B316 Transmission Park Valve Position Switch - ETRS Only | 6317 | ETRS Out of Park Switch Signal | Park Valve Position Sensor 1 | Transmission Park Valve Position Sensor 1 | Volts |
| 6319 | ETRS Out of Park Switch 2 Signal | Park Valve Position Sensor 2 | Transmission Park Valve Position Sensor 2 | Volts | |
| Q77A Transmission Control Solenoid Valve 1 | 6402 | Clutch C Control | CB123456 - LFS | Transmission Control Solenoid Valve 1 | Pressure |
| Q77B Transmission Control Solenoid Valve 2 | 6403 | Clutch D Control | CB29 - LFS | Transmission Control Solenoid Valve 2 | Pressure |
| Q77C Transmission Control Solenoid Valve 3 | 6404 | Clutch E Control | CB38 - VFS | Transmission Control Solenoid Valve 3 | Pressure |
| Q77D Transmission Control Solenoid Valve 4 | 4509 | Transmission Clutch F Control | C4 - VFS | Transmission Control Solenoid Valve 4 | Pressure |
| Q77E Transmission Control Solenoid Valve 5 | 4508 | Transmission Clutch G Control | C57R - LFS | Transmission Control Solenoid Valve 5 | Pressure |
| Q77F Transmission Control Solenoid Valve 6 | 4507 | Transmission Clutch H Control | SOWC - C5789 - LFS | Transmission Control Solenoid Valve 6 | Pressure |
| Q77G Transmission Control Solenoid Valve 7 | 6400 | Clutch A Control | Line - VFS | Transmission Control Solenoid Valve 7 | Pressure |
| Q77H Transmission Control Solenoid Valve 8 | 6401 | Clutch B Control | TCC - VFS | Transmission Control Solenoid Valve 8 | Pressure |
| Q77J Transmission Control Solenoid Valve 9 | 5501 | TCC/Clutch Select Solenoid Control | Clutch Select | Transmission Control Solenoid Valve 9 | On/Off |
| Q77K Transmission Control Solenoid Valve 10 | 1971 | Transmission Oil Level Sensor Signal | Active Oil Level Valve Control | Transmission Control Solenoid Valve 10 | On/Off |
| M123 Transmission Park Valve Lock Solenoid Actuator - ETRS Only | 7553 | Park Lock Solenoid Control | Park Inhibit Solenoid Control | Transmission Control Solenoid Valve 11 | On/Off |
| LFS - Linear Force Solenoid VFS - Variable Force Solenoid |
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LIN Bus
The TCM is a slave to the Engine Control Module (ECM) on the LIN Bus. The LIN bus is used as a redundant way to control shift commands from the range selector. The image below depicts the signal that is received by the TCM, from the ECM in a normally operating vehicle. For additional information on LIN Bus, refer to: Data Link Communications Description and Operation