Genie ZX-135/70 Service Manual page 209

Service Manual
Axle Components
How to Calibrate All Steer
Sensors
Note: This procedure will only need to be
performed if the ground controls circuit board
(TCON) has been replaced.
Note: Perform this procedure with the axles
retracted and the tires straightened.
Note: Use the following chart to identify the
description of each LCD screen control button
used in this procedure.
Plus Minus
1 Locate the calibration toggle switch at the top
of the ground control box. Activate calibration
mode by moving the toggle switch in the left
direction.
2 Temporarily install a control box door retaining
fastener between the door and the box to
prevent the control box door from moving the
toggle switch while calibrating the machine.
3 Turn the key switch to ground controls and
pull out the ground controls red Emergency
Stop button to the on position.
4 Loosen the steer angle sensor cover retaining
fasteners. Do not remove the fasteners or the
sensor cover.
5 Using a voltmeter set to DC voltage, probe the
back of the electrical connector at pins B and
C.
194
Previous Enter
ZX-135/70
6 Left front (square-end, blue side) and right
rear (circle-end, yellow side) angle
sensors: Rotate the sensor cover clockwise
or counterclockwise until the voltage reading
is between 1.4 to 1.6V DC. Tighten the sensor
cover fasteners.
Right front (square-end, yellow side) and
left rear (circle-end, blue side) angle
sensors: Rotate the sensor cover clockwise
or counterclockwise until the voltage reading
is between 3.4 to 3.6V DC. Tighten the sensor
cover fasteners.
Note: If available, WebGPI can also be used for
this procedure.
7 Remove the key from the main key switch.
Insert the key into the service/bypass key
switch and turn it to the service/bypass
position.
Note: The angle sensor calibration values will not
be saved correctly unless the key switch is in the
service/bypass position.
8 Push in the red Emergency Stop button to the
off position.
August 2014
Part No. 218700