Dtc 30067 - Maincont (Stuck Closed) - Yale MPB045VG Maintenance Manual

ELECTRICAL SYSTEM
POSSIBLE CAUSE
A. MAIN CONTACTOR COIL WIRING FAULT
B. MAIN CONTACTOR STUCK CLOSED
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
SystemYRM.
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 - MAIN CONTACTOR COIL WIRING FAULT
PROCEDURE OR ACTION:
NOTE: Key in ON position.
1. Disconnect the main contactor coil's positive socket terminal TS07 and measure voltage between the terminal
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 the traction controller connector CPS01 and the contactor coil negative terminal TS08. Measure
continuity between TS08 and socket 6 of the traction controller CPS01.
Is continuity present?
YES: Reconnect battery and all connectors. Proceed to CAUSE B.
NO: Inspect ground control circuit 075 for open or short.
CAUSE B - MAIN CONTACTOR STUCK CLOSED
PROCEDURE OR ACTION:
NOTE: Key in OFF position.
1. Measure voltage between controller B(+) and controller B(-).
Is voltage 24 ± 2.5 Vdc?
YES: Replace faulty main contactor.
NO: Proceed to CAUSE C.
Check the Service Manual section in Yale Axcess Online for possible updates and check pertinent Bulletins
Confidential/Proprietary - Do Not Copy or Duplicate
MainCont (Stuck Closed)
Please refer to the end of this procedure for supporting diagrams.
DTC 30067
NOTE
Diagnostic Trouble Codes
9030-20-21