E 450 V8-5.4L (2009)
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Are DLC pins 3 and 11 OK?
Yes
GO to I2.
No
REPAIR the DLC as necessary. CLEAR the DTCs. REPEAT the network test with the scan tool.
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I2 CHECK THE MS-CAN TERMINATION RESISTANCE
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Ignition OFF.
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Disconnect: Negative Battery Cable.
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Measure the resistance between the DLC C251-3, circuit VDB06 (GY/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG), harness
side.
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Is the resistance between 54 and 66 ohms?
Yes
GO to I3.
No
GO to I5.
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I3 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO
GROUND
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Measure the resistance between the DLC C251-3, circuit VDB06 (GY/OG), harness side and ground; and between the DLC C251-11, circuit
VDB07 (VT/OG), harness side and ground.
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Are the resistances greater than 1,000 ohms?
Yes
CONNECT the negative battery cable. GO to I4.
No
GO to I15.
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I4 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO
VOLTAGE
