F 550 2WD Super Duty V10-6.8L (2009)
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Measure the resistance between the IC C220-6, circuit VDB05 (WH), harness side and the DLC C251-14, circuit VDB05 (WH), harness side.
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Are the resistances less than 5 ohms?
Yes
GO to C5.
No
REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
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C5 CHECK THE MS-CAN CIRCUITS BETWEEN THE IC AND THE
DLC FOR AN OPEN
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Measure the resistance between the IC C220-10, circuit VDB06 (GY/OG), harness side and the DLC C251-3, circuit VDB06 (GY/OG), harness
side.
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Measure the resistance between the IC C220-9, circuit VDB07 (VT/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG), harness
side.
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Are the resistances less than 5 ohms?
Yes
CONNECT the negative battery cable. GO to C6.
No
REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
