Overview SLT and SLU Solenoids
WARNING: This page is about a different variant/trim than selected.
| Callout | Component Name |
|---|---|
| 1 | On |
| 2 | Off |
| 3 | Ex |
| slu | Solenoid Valve SLU |
| slt | Solenoid Valve SLT |
The PWM controlled solenoid valve is mounted in the transmission valve housing and controls the transmission system pressure. The value is controlled so that it is not higher than what is currently needed for any friction element. Brake B2 does not have its own pressure control valve and is therefore supplied by SLT.
The control module activates the valve by pulsing it with B+ (300 Hz PWM). The valve is powered from control module pin 3 in the connector that makes contact directly with the transmission on the bottom of the control module. The valve is grounded from pin 1. The current varies between 0-1000 mA. The solenoid is normally open and the hydraulic pressure drops as the current increases.