Type 2 Linear Drive Not Actuating

[BarefootBoy]

I have a Type 400G Course Computer driving a Type 2 Hydraulic Linear Drive (M81200). Upon pressing "Auto" the clutch engages as evidenced by the wheel locking but the Drive does not steer the boat (even when +/- 10 is pressed). I'm assuming the system is attempting to steer the boat because eventually the "off course" alarm initiates. Since the fluid reservoir is full I suspect something electrical. The voltage out of the course computer "Motor" terminals is ~ 6.5V when +/- 10 is pressed and the same voltage is also being seen at the black & red wires of the pump, but there is no apparent indication that the motor is running. Now for the questions:
1. Is ~ 6.5V an appropriate reading?
2. If so, are there any further tests I can run to verify that pump/motor condition? Can the pump/motor be rebuilt or is a new one needed. What type /model number?
3. If 6.5V is not appropriate is there any troubleshooting that can performed on the Course Computer?

Thank you in advance.