F 350 4WD Super Duty V8-5.4L (2009)
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Are the voltages greater than 10 volts?
Yes
GO to D2.
No
VERIFY the Smart Junction Box (SJB) fuse 33 (10A) and Battery Junction Box (BJB) fuse 5 (30A) are OK. If OK, REPAIR the circuit in question. If
not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan
tool.
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D2 CHECK THE TBC MODULE GROUND CIRCUIT FOR AN OPEN
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Ignition OFF.
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Disconnect: Negative Battery Cable.
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Measure the resistance between the TBC module C2124-11, circuit GD115 (BK/GY), harness side and ground.
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Is the resistance less than 5 ohms?
Yes
GO to D3.
No
REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
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D3 CHECK THE HS-CAN CIRCUITS BETWEEN THE TBC MODULE AND THE DATA LINK CONNECTOR (DLC) FOR AN OPEN
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Measure the resistance between the TBC module C2142-2, circuit VDB04 (WH/BU), harness side and the Data Link Connector (DLC) C251-6,
circuit VDB04 (WH/BU), harness side.
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Measure the resistance between the TBC module C2142-3, circuit VDB05 (WH), harness side and the DLC C251-14, circuit VDB05 (WH),
harness side.
