Tayana -48 Owner's Manual page 102

or the red and gray wires in the control cable contact
coming from the thruster.
Solution
If the thruster runs in both directions, try the same in the
connector that goes into the back of the control panel. If
it also works in this position, check the contact and wires
on the back of the panel and try to engage this again by
pushing both ON buttons simultaneously. If the panel
does not turn on, measure the voltage between the red
and black in the contact going into the thruster. If the
voltage is good, chances are that the panel is not
working. If it works by the thruster and not by the panel
there is a bad contact or a broken lead the control
cables between these two points.
Measure that you have the correct voltage between the
red and all other colors in the contact.
Check
If the thruster does not run at all or only in one direction
in the above tests, check the internal wiring on the
thruster motor, solenoids and electric motor interface
box to be accordance with the wiring diagram and
ensure that all connections are clean and tight
Solution
Between main minus and the blue and gray wire
connected to the sides of the main solenoids you should
have the same voltage as between the main battery
cables on the thruster. If not, check that the internal
wiring on the solenoid is okay and measure that there is
contact through the magnetizing spools of each side of
the solenoid (measure between the red and blue on one
side and red and gray on the other side with an ohm
meter). If there is no contact between these, the
solenoid is broken and needs replacing.
PROBLEM
101