Dtc 30001 Liftcoil - Yale MPB045VG Maintenance Manual

Diagnostic Trouble Codes
POSSIBLE CAUSE
A. LIFT COIL WIRING FAULT
B. LIFT COIL FAULT
C. FAULTY TRACTION CONTROLLER
COMPONENT OPERATIONAL CHECK
PROCEDURE OR ACTION:
1. Conduct a visual inspection of all connectors/wiring associated with the fault code.
Are any faults detected/observed?
YES: Repair/replace connector or wiring associated with faults found. Refer to the appropriate Electrical
System YRM ..
NO: Proceed to Step 2.
2. Re-key the vehicle.
Is the code still present?
YES: Proceed to CAUSE A.
NO: Problem may be intermittent.
CAUSE A - LIFT COIL WIRING FAULT
PROCEDURE OR ACTION:
NOTE: Disconnect pump coil terminals TS11 and TS12 located on left side of traction controller. Turn key to ON
position.
1. Measure voltage between pump coil terminal TS11 and B(-).
Is voltage 24 ± 2.5 Vdc?
YES: Disconnect battery and proceed to Step 2.
NO: Inspect circuit 239 for open or short.
2. Disconnect connector CPS01 and measure resistance between socket 4 and the pump coil terminal TS11.
Is resistance <1 ohm?
YES: Connect CPS01, connect battery, and proceed to Step 3.
NO: Inspect circuit 028 for open, short, or source of excessive resistance.
3. Measure voltage between pump coil terminal TS12 and B(+) while operating tiller card lift switch.
Is voltage 24 ± 2.5 Vdc?
YES: Disconnect battery and proceed to CAUSE B.
NO: Proceed to CAUSE C.
CAUSE B - LIFT COIL FAULT
PROCEDURE OR ACTION:
1. At the pump coil contacts, measure resistance between the parallel terminal tabs.
Is resistance 55 ± 5.25 ohms?
YES: Proceed to CAUSE C.
NO: Replace faulty lift coil.
Check the Service Manual section in Yale Axcess Online for possible updates and check pertinent Bulletins
9030-20-2
Please refer to the end of this procedure for supporting diagrams.
DTC 30001
LiftCoil
NOTE
Confidential/Proprietary - Do Not Copy or Duplicate
ELECTRICAL SYSTEM