BOBCAT INTERLOCK CONTROL SYSTEM (BICS™) 12. Troubleshooting Chart 864/864H BICSOperation&MaintenanceManual#6900626–SystemsAnalysisSection
The following list shows the effects which can happen to the loader, and the probable causes when the BICS Controller lights are off or flashing. Have service procedures performed ONLY BY QUALIFIED BOBCAT SERVICE PERSONNEL.
System Activated
Seat Bar
Light ON PRESS OPERATE button activated
Light OFF TO is
Seat bar down
Effect on Operation of Loader When Light is OFF
PRESS TO OPERATED button is not activated
Lift, tilt and traction functions will not operate.
Seat bar up.
Lift, tilt and traction functions will not operate.
Flashing Indicator Means System Problem (See Your bobcat Dealer for Service) Number of Flashes
6
System Activated circuit shorted to battery voltage.* System Activated circuit shorted to ground. Seat bar sensor circuitshorted to battery voltage*. Seat bar sensor circuit shorted to ground. Valve output circuit shorted to battery voltage*. Valve output circuit shorted to ground. Valve output circuit is not grounded. Traction lock hold coil circuit is open. Traction lock hold coil circuit shorted to battery voltage*. Traction lock hold coil circuit shorted to ground. Traction lock pull coil circuit is open. Traction lock pull coil circuit is shorted to battery voltage*. Traction lock pull coil circuit is shorted to ground.
N/A
N/A
2 3 2 3
Valve
Traction
Control valve can be used
Loader can be moved forward and backward
Control valve cannot be used
Loader cannot be moved forward and backward
Lift and tilt functions will not operate.
Loader cannot be moved forward and backward.
2 3 3 1 2 3 4 5
Power
BICS Controller is operating correctly.
BICS Controller is not operating correctly.
Lift, tilt and traction function will not operate.
Cause
Dealer Copy -- Not for Resale
Indicator Light
* Normal BICS operating voltage is less than the electrical system voltage. If voltage is more, the circuit is shorted to system voltage.
NOTES: (1) If the System Activated and/or seat bar sensor circuits are open, the corresponding lights will be OFF. If one of the lights stay OFF, check the circuit for continuity. See Inspection & Maintenance Instructions in Preventive Maintenance section. (2) If all five lights flash repeatedly, the voltage supply is greater than 16 volts or less than 9 volts. (3) Flashing patterns will repeat every 3.25 seconds.
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864, 864H Bobcat Loader Operation & Maintenance Manual
