Structure and inner electrical connection
The shift-position sensor and the two pressure sensors are supplied with current by the VDM control unit (initial current 0.35 ampere, maximum 2.5 ampere). The pressure control valves are activated by the VDM control unit with a pulse-width-modulated signal (5% to 95%). The direction valve as well as the safety valve are either energized or de-energised (activated or not activated).
| Item | Explanation |
|---|---|
| 1 | Shift position sensor |
| 2 | Pressure sensor, front axle |
| 3 | Pressure sensor, rear axle |
| 4 | Front axle pressure control valve |
| 5 | Rear axle pressure control valve |
| 6 | Directional control valve |
| 7 | Safety valve |
PIN REFERENCE
| Item | Explanation |
|---|---|
| Terminal 31E | Terminal 31, electronics earth (ground) |
| PWM1 | Activation of pressure control valve for front axle (pulse-width modulated) |
| PWM2 | Activation of pressure control valve for rear axle (pulse-width modulated) |
| SI G1 | Shift-position sensor signal |
| SI G2 | Pressure sensor signal, front axle |
| SI G3 | Pressure sensor signal, rear axle |
| SI G4 | Activation signal for direction valve |
| SI G5 | Activation signal for safety valve |
| 5 V | Voltage supply
|
The suction throttle valve is connected by means of a 2-pin plug connection.
The suction throttle valve is a solenoid valve. The VDM control unit supplies the suction throttle valve with current (approx. 0.85 Ampere).
| Item | Explanation |
|---|---|
| 1 | Suction throttle valve |
PIN REFERENCE
| Item | Explanation |
|---|---|
| 12 V | Voltage supply for suction throttle valve |
| Terminal 31E | Terminal 31, electronics earth (ground) for suction throttle valve |