Dtc 30068 - Maincont (Stuck Open) - Yale 524150797 Maintenance Manual

ELECTRICAL SYSTEM
POSSIBLE CAUSE
A. MAIN CONTACTOR COIL WIRING FAULT
B. FAULTY B(+) CONNECTION
C. MAIN CONTACTOR STUCK OPEN
D. FAULTY TRACTION CONTROLLER
COMPONENT OPERATIONAL CHECK
NOTE: Always check battery condition and state of charge before performing electrical troubleshooting. A faulty
or low charged battery will cause electrical features to not operate as designed and give incorrect readings while
performing electrical tests.
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 - 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.
Check the Service Manual section in Yale Axcess Online for possible updates and check pertinent Bulletins
MainCont (Stuck Open)
Please refer to the end of this procedure for supporting diagrams.
DTC 30068
NOTE
Diagnostic Trouble Codes
9030-20-29