Factory Cat MINI-MAG SERIES, Service Manual

Page: 113 / 121

Mini-Mag Service Manual V1.0
13
13-35
CENTRAL COMMAND CONTROLLER
Did the icon
appear?
NO
Was the voltage
between 0.8 and 2.8
volts?
From
Page 1
Replace the
controller
Trace orange wire out of
pin #7 on the 14 pin Molex
connector on the controller
and make sure it is not
shorted to other wires or
the body of the machine.
Was the wire
shorted?
Repair the short
NO
NO
YES
YES
With a voltmeter set to the DC scale
measure between the terminal with
the red wire on the solution
potentiometer and the negative buss
bar with the machine turned on
Was
the voltage
between 4.8 and
5.2 volts?
With a voltmeter set to the DC scale
back probe between terminals 7 and
the negative buss bar with the
machine turned on.
YES
Replace the
potentiometer
YES
There is a break in the circuit between pin
#12 in the 14 pin Molex connector at the
controller and the potentiometer. Refer to
wiring diagram to trouble shoot.
With a voltmeter set to the DC scale
back probe between terminal #12 on
the 14 pin Molex connector at the
controller and the negative buss bar
with the machine turned on.
Was
the voltage
between 4.8 and
5.2 volts?
Replace the
controller
YES
NO
MiniMAG – TRACTION DRIVE w/CCII
SOLUTION SOLENOID FLOW CHART
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