SYSTEMS ANALYSIS

ADVANCED HAND CONTROLS

BOBCAT INTERLOCK CONTROL SYSTEM (BICS™ )

BOBCAT INTERLOCK CONTROL SYSTEM (BICS™) 10.

Troubleshooting Chart

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 the service procedure performed ONLY BY QUALIFIED BOBCAT SERVICE PERSONNEL.

Effect on Operation of Loader

Flashing Indicator Means System Problem

(See Your Bobcat Dealer for Service)

IndicatorWhen Light Is Number of LightLight ON Light OFF OFFFlashes Cause

System PRESS TO OPERATEPRESS TO OPERATE Lift, tilt and traction2System Activated circuit shorted to Activated button is activatedbutton not activatedfunctions will notbattery voltage.* operate.3System Activated circuit shorted to ground.

Seat Bar Seat Bar Down.Seat Bar Up.Lift, tilt and traction2Seat bar sensor circuit shorted to functions will not battery voltage*. operate.

3Seat bar sensor circuit shorted to ground.

Valve Control Valve Control ValveLift and tilt functions2Valve output circuit shorted to battery Can Be Used.Cannot Be Used.will not operate. voltage*.

3Valve output circuit shorted to ground.

3Valve output circuit is not grounded.

Traction Loader can beLoader cannot beLoader cannot be1Traction lock hold coil circuit is open. moved forward moved forward andmoved forward and2Traction lock hold coil circuit shorted & backward.backward.backward. to battery voltage*.

3Traction lock hold coil circuit shorted to ground.

4Traction lock pull coil circuit is open.

5Traction lock pull coil circuit is shorted to battery voltage*.

6Traction lock pull coil circuit is shorted to ground.

Power BICS ControllerBICS Controller isLift, tilt and traction is operatingnot operatingfunctions will notN/AN/A correctly.correctly. operate.

* 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.

ADVANCED HAND CONTROLS (AHC)

Troubleshooting Chart

9.

The AHC has a built–in diagnostic function which uses the two lights on the left handle. Both lights will be ON when the AHC is functioning correctly. The lights will flash in a specific pattern to indicate a problem (See Below). (See your Bobcat dealer for service information.)

FLASHING LIGHT MEANS SYSTEM PROBLEM

(See Your Bobcat Dealer for Service)

NOTE: Flashing patterns will repeat every six seconds. One blink will occur if Right or Left Hand Control is not in neutral position before key is turned ON or engine is started and green PRESS TO OPERATE button is activated.