System overview: Components
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Volvo S80, 2005 Volvo S80, 2004 Volvo S80, 2003 Volvo S80, and 2002 Volvo S80. However, it is still accessible from the selected car via links, so may be relevant.
The following components are included in the control system for the automatic transmission (4T65EV):
- The transmission control module (TCM) - Controls the solenoids
- Shift solenoid, S1 - Controls shifting in the transmission
- Shift solenoid, S2 - Controls shifting in the transmission
- Lock-up solenoid, SL - Controls the torque converter lock-up function
- Line pressure solenoid, STH - Controls the transmission line pressure
- Transmission input speed sensor (input shaft speed) (5) - Provides the transmission control module (TCM) with information about the input shaft speed. This is measured on the turbine side of the torque converter
- Speed sensor (output shaft speed) (7) - Provides the transmission control module (TCM) with information about the output shaft speed from the transmission
- Temperature sensor (6) - Provides the transmission control module (TCM) with information about the oil temperature of the transmission
- Gear-shift position sensor (8) - Provides the transmission control module (TCM) with information about the selected gear position (PRND321)
- Pressure sensor lock-up (9) - Provides the transmission control module (TCM) with information about the transmission oil pressure and selected gear
- Gear selector module (GSM) - Provides the transmission control module (TCM) with information about the gear selector position: If the selector is in position D or in the Geartronic mode, or if up or down shifting occurs in the Geartronic position.