F 150 4WD V8-4.6L VIN 8 (2010)
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Inspect the vehicle for an Interior Lighting Control Module (ILCM).
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Is the vehicle equipped with an ILCM?
Yes
GO to W48.
No
GO to W49.
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W48 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE ILCM DISCONNECTED
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Disconnect: ILCM C3498.
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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 greater than 1,000 ohms?
Yes
CONNECT the negative battery cable. GO to W63.
No
GO to W49.
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W49 VERIFY VEHICLE EQUIPMENT - APIM
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Inspect the vehicle for an Accessory Protocol Interface Module (APIM).
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Is the vehicle equipped with an APIM?
Yes
GO to W50.
No
REPAIR the circuit. CONNECT all modules. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
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W50 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE APIM DISCONNECTED
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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.