Dtc 30248 Low Temp - Yale MPB045VG Maintenance Manual

ELECTRICAL SYSTEM
POSSIBLE CAUSE
A. WIRING FAULT
B. FAULTY TRACTION CONTROLLER
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 .
NO: Fault may be intermittent.
3. Remove truck from austere environment and turn key to ON position. The system will recover once truck is
able to achieve an internal temperature of -30°C (-22°F) or higher.
Did system record and code reset?
YES: Instruct operator on thermal management.
NO: Proceed to CAUSE A.
CAUSE A - WIRING FAULT
PROCEDURE OR ACTION:
1. Perform Voltage Checks as indicated in the Basic Electrical Troubleshooting section.
Is the code still present?
YES: Clear error log. Make sure to indicate the DTC code(s) on the warranty claim to include an accurate
problem description of service provided.
NO: 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, short, or source of excessive resistance.
CAUSE B - 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
include 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
Confidential/Proprietary - Do Not Copy or Duplicate
DTC 30248
Low Temp
Diagnostic Trouble Codes
9030-20-53