F 250 4WD Super Duty V8-5.4L (2009)
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Are the resistances less than 5 ohms?
Yes
GO to H3.
No
REPAIR the circuit. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
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H3 CHECK THE MS-CAN CIRCUITS BETWEEN THE SJB AND THE
DLC FOR AN OPEN
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Disconnect: SJB C2280b.
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Measure the resistance between the SJB C2280b-37, circuit VDB06 (GY/OG), harness side and the Data Link Connector (DLC) C251-3, circuit
VDB06 (GY/OG), harness side.
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Measure the resistance between the SJB C2280b-38, 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 H4.
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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H4 CHECK FOR CORRECT SJB OPERATION
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Disconnect all the SJB connectors.
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Check for:
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corrosion
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damaged pins
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pushed-out pins
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Connect all the SJB connectors and make sure they seat correctly.
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Operate the system and verify the concern is still present.
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Is the concern still present?
Yes
