Yale 524150797 Maintenance Manual page 271

ELECTRICAL SYSTEM
POSSIBLE CAUSE
A. INTERNAL FAULT
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 - INTERNAL FAULT
PROCEDURE OR ACTION:
1. Replace faulty controller or tiller card. Make sure to indicate the Diagnostic Trouble Code on the warranty
claim to include an accurate problem description leading to controller replacement.
END POSSIBLE CAUSES
END FAULT
Check the Service Manual section in Yale Axcess Online for possible updates and check pertinent Bulletins
Diagnostic Trouble Codes
Internal Fault
Group 20
DTC XX099
Diagnostic Trouble Codes
9030-20-1