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Home >> Volvo >> 2012 >> XC90 Base, FWD >> Repair and Diagnosis (Single Page) >> Restraints >> Passive Restraints >> Electrical Components - Design And Function >> Transmission Control Module (TCM) (4T65 AWD; 2003-2006) >> TCM Diagnostic Functions >> Description Of Parameters >> Parameters, Value >> Line Pressure Solenoid STH Control
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Line Pressure Solenoid STH Control

Line pressure solenoid STH controls the reference pressure for the transmission. The reference pressure in turn controls the system pressure in the transmission so that the system pressure in gear D varies between 0.28 - 1.2 MPa (R position: 0.5 - 1.8 MPa). Solenoid control is directly dependent on the signal from the throttle position (TP) sensor. The higher the signal from the throttle position (TP) sensor the greater the reference pressure and therefore line pressure.

Measurement range: 0 - 100 %

0 % control, minimal reference pressure, gives lowest line pressure.

100 % control, maximum reference pressure, gives highest line pressure.