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Minifix-K1Plus 

– Series (July 2008-today) 

Troubleshooting: K1Plus with square circuit board  

Table of content:                                                      Page 

1)

Gate overview and connector setup………………....2 

2)

Gate does not tilt open up…………………………….3 

3)

Gate is not lowering down…………………………….4 

4)

Gate is not auto tilting down at ground level…....…..5 

5)

Gate is not tilting up at ground level..………………..6 

6)

Gate is not lifting up.…………………………………..7 

7)

Gate is not closing……………………………………..8 

8)

Electrical schematic……………………………………9 

9)

Hydraulic schematic………………………………….10 

*****MAKE SURE YOUR BATTERIES ARE FULLY CHARGED 

AND IN GOOD CONDITION***** 

Tools needed: 

1.) Voltmeter 
2.) Test light 
3.) 8” jumper cable (16ga. or smaller) 
4.) Screw driver flat head or 13mm (1/2”) wrench 

Summary of Contents for Minifix K1Plus Series

Page 1: ...ot lowering down 4 4 Gate is not auto tilting down at ground level 5 5 Gate is not tilting up at ground level 6 6 Gate is not lifting up 7 7 Gate is not closing 8 8 Electrical schematic 9 9 Hydraulic schematic 10 MAKE SURE YOUR BATTERIES ARE FULLY CHARGED AND IN GOOD CONDITION Tools needed 1 Voltmeter 2 Test light 3 8 jumper cable 16ga or smaller 4 Screw driver flat head or 13mm 1 2 wrench ...

Page 2: ...M GROUND CONTROL PANEL CAB CUT OFF SWITCH FOOT CONTROL WARNING LIGHTS HAND REMOTE CYLINDERS LIFT 15 1 ea TILT 14 1 ea Release valve S2 Tilt cylinder B 16 Platform sensor B 13 Lift arm sensor Pump motor Lift cylinder Release valve S1 Pump motor box Oil tank Shift valve S5 Motor Motor solenoid Circuit board ...

Page 3: ...n each 1 2 Check for short in optional equipment a Check voltage at J4 14 and Ground J 2 while pushing the open knob for opening up the release valve S2 at the tilt cylinder No Voltage check for bad knob or loose wire to control panel b Listen for clicking of the release valve at the tilt cylinder connected to platform If valve is not clicking check wire for damaged spots loose connections or a ba...

Page 4: ...t engaged Minifix Series a Check resettable Circuit Breaker on top of battery Push Reset Tab back in if popped out b Check fuse on top of battery qty 1 and at circuit board qty 2 inside pump and motor box at mount frame c Start van and run engine in fast idle for charging the battery if liftgate starts working recharge battery test battery and replace if necessary d Check power on board between J ...

Page 5: ...y to release valve on tilt cylinder a Check voltage at J30 4 to Ground J 2 for power supply of the control buttons b Check voltage at J30 6 lower to Ground J 2 for lowering signal by pushing down knob Signal on J30 6 control buttons are ok if no signal check for damaged wire or loose cables to control buttons or damaged buttons 3 3 Check function of control buttons J30 and hand control J31 Minifix...

Page 6: ...ide shift valve S5 by pushing in at the cab of the valve Gate will tilt up if not check the valve and look for damaged wire or loose connections 4 4 Check function of shift valve S5 at pump motor a Check voltage at J30 4 to Ground J 2 for power supply of the control buttons b Check voltage at J30 5 lift to Ground J 2 for lifting signal by pushing up buttons Signal on J30 5 control buttons are ok i...

Page 7: ... in each 5 3 Check for short in optional equipment a Check for voltage at J 1 3 to Ground J 2 to engage motor solenoid while pushing lift knobs b Check for voltage at small motor solenoid terminals to Ground J 2 while pushing knobs and listen for clicking of the motor solenoid no voltage or clicking check wire to motor solenoid c Check voltage across the small motor solenoid terminals with test li...

Page 8: ...ns are ok if no signal check for damaged wire or loose cables inside control buttons or damaged buttons 6 2 Check function of control buttons J30 and hand control J31 a Check Voltage at J1 12 and Ground J 2 while pushing buttons to engage the shift valve S5 at the pump and motor inside box at mount frame underneath van b Override the shift valve S5 by pushing in at the cab on shift valve S5 while ...

Page 9: ...AL WARNING LIGHTS FOOT CONTROL 4 WIRE CABLE 2 BLACK 4 BLACK 1 BLACK GREEN YELLOW LI Lift Up LO Lower Down OP Open Gate CL Close Gate CIRCUIT BOARD Legend gn green bl blue br brown wt white ye yellow bk black gy green yellow Electrical schematic ...

Page 10: ...nction R1 Flow Restrictor located inside hose adaptor on lift cylinder R2 Flow Restrictor located inside hose adaptor on tilt cylinder S5 Shift Valve is activated on tilt up and lowering function R5 Restrictor Valve located in power pack Flow Divider is activated when fluid is going back into the power pack If Flow Divider is loose or hanging up the fluid is circulated back in to tank 2 2 10 Hydra...

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