Challenger V8-5.7L (2010)
The electric valve control unit (7) consists of a plastic shell which houses the RPM sensors (1,12), regulating solenoid valves (3, 4), solenoid valves (5,
6, 10), the TCC solenoid valve (11), the park/neutral contact (9), and the transmission oil temperature sensor (8). Conductor tracks integrated into the
shell connect the electric components to a plug connection (2). This 13-pin plug connection (2) establishes the connection to the vehicle-side cable
harness and to the transmission control module (TCM). With the exception of the solenoid valves, all other electric components are fixed to the
conductor tracks.
HYDRAULIC CONTROL UNIT
Working Pressure (Line Pressure or Operating Pressure) (p-A)
The working pressure provides the pressure supply to the hydraulic control and the transmission shift elements. It is the highest hydraulic pressure in the
entire hydraulic system. The working pressure is regulated at the working pressure regulating valve in relation to the load and gear. All other pressures
required for the transmission control are derived from the working pressure.
Lubrication Pressure (p-Sm)
At the working pressure regulating valve surplus oil is diverted to the lubrication pressure regulating valve, from where it is used in regulated amounts to
lubricate and cool the mechanical transmission components and the torque converter. Furthermore, the lubrication pressure (p-Sm) is also used to limit
the pressure in the torque converter.
Shift Pressure (p-S)
The shift pressure is determined by the shift pressure regulating solenoid valve and the shift pressure regulating valve. The shift pressure:
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Regulates the pressure in the activating shift element during the shift phase.
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Determines together with the modulating pressure the pressure reduction at the deactivating shift element as regulated by the overlap regulating
valve.
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Initializes 2nd gear in limp-home mode.
