Electrical Control Unit

Fig 1: Identifying Electrohydraulic Unit Components

Courtesy of DAIMLERCHRYSLER CORP.

Signals from the transmission control module (TCM) are converted into hydraulic functions in the electrical control unit (7). The RPM sensors (1, 12), starter interlock contact (9), and transmission oil temperature sensor (8) of the electrical control unit (7) supply the TCM with input signals. The solenoid valves are controlled by the TCM and trigger the hydraulic functions.