DTC 30080
OverHeat
POSSIBLE CAUSE
A. WIRING FAULT
B. FAULTY TRACTION CONTROLLER
NOTE
Please refer to the end of this procedure for supporting diagrams.
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 Step 3.
NO: Fault may be intermittent.
3. Reduce truck usage and allow controller to cool for approximately 15 minutes. System will recover once tem-
perature is below 115°C (239°F) for the traction motor and 85°C (185°F) for the traction controller.
Is the code still present?
YES: Proceed to Cause A.
NO: Fault may be intermittent. Review truck usage, weight load, and rated capacities.
CAUSE A - WIRING FAULT
PROCEDURE OR ACTION:
1. Perform Voltage Checks as indicated in the Basic Electrical Troubleshooting section.
Did code clear?
YES: Clear error log and verify correct operation.
NO: Disconnect battery and proceed to Step 2.
2. Disconnect CPS01 and CPS02. Measure resistance between CPS01, socket 8 and CPS02, socket 1.
Is resistance ≤ 1 ohm?
YES: Connect CPS01 and proceed to Step 3.
NO: Inspect circuit 367 for open, short, or source of excessive resistance.
3. Measure resistance between CPS02, socket 2 and B(-).
is resistance ≤ 1 ohm?
YES: Proceed to Cause B.
NO: Inspect circuit 101 for open or shorts.
Diagnostic Trouble Codes ELECTRICAL SYSTEM
Check the Service Manual section in Yale Axcess Online for possible updates and check pertinent Bulletins
9030-20-36
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