Yale 524150797 Maintenance Manual page 296

Diagnostic Trouble Codes
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.
CAUSE C - FAULTY TRACTION CONTROLLER
PROCEDURE OR ACTION:
1. If no faults are found, replace controller. Make sure to indicate the DTC code(s) on the warranty claim to in-
clude an accurate problem description leading to controller replacement.
END POSSIBLE CAUSES
Check the Service Manual section in Yale Axcess Online for possible updates and check pertinent Bulletins
9030-20-26
DTC 30067 (Cont)
MainCont (Stuck Closed)
ELECTRICAL SYSTEM