F 150 4WD V8-4.6L VIN 8 (2010)
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Disconnect: APIM C2283.
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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 less than 5 ohms?
Yes
REPAIR the circuit. CONNECT all modules. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
No
CONNECT the negative battery cable. GO to W64.
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W31-W65
Communications Network
Pinpoint Tests
Pinpoint Test W: No Medium Speed Controller Area Network (MS-CAN) Communication, All Modules Are Not Responding
Refer to Wiring Diagram Set 14, Module Communications Network for schematic and connector information. See: Diagrams/Electrical
Diagrams/Diagrams By Number
Normal Operation
The Medium Speed Controller Area Network (MS-CAN) uses an unshielded twisted pair cable. Circuits VDB06 (GY/OG) and VDB07 (VT/OG)
provide the network connection to all modules on the network.
This pinpoint test is intended to diagnose the following:
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Wiring, terminals or connectors
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Accessory Protocol Interface Module (APIM)
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Audio Control Module (ACM) or in-dash computer
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Audio Digital Signal Processing (DSP) module
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Driver Seat Module (DSM)
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Dual Climate Controlled Seat Module (DCSM)
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Front Controls Interface Module (FCIM)
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Front Display Interface Module (FDIM)
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Global Positioning System Module (GPSM)
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HVAC module
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Instrument Cluster (IC)
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Interior Lighting Control Module (ILCM)
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Parking Aid Module (PAM)
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Power Running Board (PRB) module
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Smart Junction Box (SJB)
PINPOINT TEST W: NO MS-CAN COMMUNICATION, ALL MODULES ARE NOT RESPONDING
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the
connector.