Main regulating valve
The main regulating valve (variable force solenoid) controls the required main line pressure for the individual transmission ranges.
The main line pressure is controlled dependent on the current engine load.
Internal Shift Mechanism
The shift lever is secured on a square on the manual shaft. Axial movement of the selector lever cable is changed into rotation of the manual shaft.
In the transmission, the manual shaft operates the parking pawl engaging lever and the actuating lever of the manual valve.
The manual valve, a valve operated entirely manually, is moved by means of the manual valve actuating lever in the valve body.
The manual valve guarantees the functions during hydraulic emergency operation.
External Shift Mechanism
The transmission end of the manual selector lever cable is attached to a ball on the lever on the manual shaft.
The cable abutments are secured to the transmission housing, and then to the bracket of the manual selector lever.
The adjuster for the manual selector lever cable is located at the transmission side of the sheath.
At the manual selector lever end the cable is clipped onto a ball.
Intermediate Gear Stage and Final Drive Assembly
The final drive input gear is splined to the planet carrier of the front planetary gear set and drives the transfer shaft input gear of the intermediate gear stage.
The transfer shaft output gear of the intermediate gear stage drives the final drive assembly.
The torque is transmitted to the halfshafts through the final drive assembly.
The differential offsets differences in speed of rotation of the halfshafts.
The intermediate gear stage is designed so that the final drive ratio can be adapted to requirements when the automatic transmission is used in conjunction with different engines.
Overview Transmission Control
Powertrain Control Module (PCM)
The PCM is located under the trim panel on the right-hand A-pillar.
On vehicles with automatic transmissions, the EEC-V PCM controls the transmission in addition to the engine management system. In this case, a module with 104 pins is used.
The PCM evaluates the incoming signals from the individual sensors and actuates the solenoid valves in the valve body of the transmission directly according to the operating state.
Diagnostic checks can be carried out on the transmission through the data link connector (DLC) above the central junction box (CJB).