Yale 524150797 Maintenance Manual page 312

Diagnostic Trouble Codes
CAUSE B - CONTROLLER WIRING FAULT
PROCEDURE OR ACTION:
NOTE: Key in OFF position.
1. Measure voltage between the traction controller B(+) terminal and B(-).
Is precharge voltage same as battery voltage?
YES: Proceed to Cause C.
NO: Inspect B(+) cable for damage or loose connections.
CAUSE C - FAULTY 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
9030-20-42
DTC 30087 (Cont)
OverVolt
ELECTRICAL SYSTEM