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Home >> Saab >> 2005 >> 9-3 Linear (9440) L4-2.0L Turbo (2.0t) >> Repair and Diagnosis >> Powertrain Management >> Transmission Control Systems >> Actuators and Solenoids - Transmission and Drivetrain >> Actuators and Solenoids - A/T >> Torque Converter Clutch Solenoid >> Description and Operation >> 6-Speed, AF 40

6-Speed, AF 40




Abbreviation / Abbreviation expanded Task


SLU Lock up linear solenoid Regulates the pressure to the torque converter clutch.
SLT Throttle linear solenoid Regulates the system pressure.
Also used to slip in B2, which does not have its own solenoid. The system pressure is regulated so that is not higher than is needed for any friction element in order to reduce energy loss.

SLC1 Linear solenoid C1 Regulates pressure to clutch C1
SLC2 Linear solenoid C2 Regulates pressure to clutch C2
SLC3 Linear solenoid C3 Regulates pressure to clutch C3
SLB1 Linear solenoid B1 Regulates pressure to brake B1

Note: There are also 2 on/off-type solenoids. The following table shows these digital solenoids and their duties.

S1 Solenoid 1 Pressure increase when slipping in C2.
S2 Solenoid 2 Pressurising of brake B2 while engine braking in 1st gear.
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