Group 20
Diagnostic Trouble Codes
DTC XX099
Internal Fault
POSSIBLE CAUSE
A. INTERNAL FAULT
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 - 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
ELECTRICAL SYSTEM Diagnostic Trouble Codes
Check the Service Manual section in Yale Axcess Online for possible updates and check pertinent Bulletins
Confidential/Proprietary - Do Not Copy or Duplicate 9030-20-1
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