F 350 2WD Super Duty V10-6.8L (2009)
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C2 CHECK THE IC 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 IC C220-8, circuit GD133 (BK) harness side and ground.
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Is the resistance less than 5 ohms?
Yes
CONNECT the negative battery cable. GO to C3.
No
REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
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C3 CHECK THE IC VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
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Disconnect: IC C220.
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Ignition ON.
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Measure the voltage between the IC, harness side and ground as follows:
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Are the voltages greater than 10 volts?
Yes
GO to C4.
No
VERIFY the SJB fuses 26 (10A) or 36 (5A) 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. CONNECT the negative battery cable. REPEAT the network test with the scan tool.
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C4 CHECK THE HS-CAN CIRCUITS BETWEEN THE IC AND THE
DLC FOR AN OPEN
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Measure the resistance between the IC C220-7, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness
side.