Repair manual

CRT Repair Steering and Pitch Control
wc_tx000096gb.fm 73
7.20 Error Code 321 - Left Joystick Open Circuit
7.20.1 Check the left joystick wire connections. Perform a visual inspection of
the left joystick and associated wiring. If no faults are found proceed to
next step.
7.20.2 Use a digital volt/ohm meter to test for voltage at the gray P1 control
board connector. Turn ignition switch ON. Connect the black meter
lead to a common ground. With the red meter lead, back probe the #7
terminal at the gray P1 connector. The meter should read 5 VDC. If no
voltage is present, replace the control board. If voltage is present, back
probe the #8 terminal at the gray P1 connector. The meter should read
2.5 +/- .2 VDC with the left joystick in the centered position. If no
voltage is present, replace the left joystick. If voltage is present, move
the meter ground lead to terminal #10 of the gray P1 connector. Move
the red meter lead to terminal #8 of the gray P1 connector. The meter
should read 5 VDC. If no voltage is present, keep the black meter lead
inserted in terminal #10 and move the red meter lead to the alternator
battery terminal. The meter should read battery voltage. If voltage is
present, replace the left joystick. If no voltage is present, replace the
control board.
7.20.3 After replacing the failed component make sure to reposition the wiring
harnesses in the correct configuration and secure with wire ties. Turn
ignition switch ON and test the functionality of all 3 circuits; right, left,
and side.