F 250 4WD Super Duty V8-5.4L (2009)
all modules on the network may result.
PINPOINT TEST U: INTERMITTENT NO MS-CAN COMMUNICATION, ONE OR MORE MODULES ARE NOT RESPONDING
DURING NETWORK TEST
NOTE: Various modules will set network DTCs during this test procedure. Clear DTCs from all modules after the diagnostic procedure is completed.
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings.
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U1 CHECK THE DLC PINS FOR DAMAGE
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Ignition OFF.
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Disconnect the scan tool cable from the Data Link Connector (DLC).
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Inspect DLC pins 3 and 11 for damage.
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Are DLC pins 3 and 11 OK?
Yes
GO to U2.
No
REPAIR the DLC as necessary. CLEAR the DTCs. REPEAT the network test with the scan tool.
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U2 CHECK THE MS-CAN TERMINATION RESISTANCE
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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 U3.
No
Go To Pinpoint Test P. See: Pinpoint Test P: The 4X4 Control Module Does Not Respond To The Scan Tool
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U3 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.
