Expedition 2WD V8-5.4L (2009)
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V38 VERIFY VEHICLE EQUIPMENT - HVAC MODULE
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Inspect the vehicle for an HVAC module.
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Is the vehicle equipped with an HVAC module?
Yes
GO to V39.
No
GO to V40.
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V39 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE HVAC MODULE
DISCONNECTED
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Disconnect: HVAC Module C228a (EATC) or C2357a (EMTC).
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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 all modules. CONNECT the negative battery cable. GO to V62.
No
GO to V42.
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V40 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 V41.
No
GO to V42.
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V41 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE APIM DISCONNECTED
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Disconnect: APIM C3342.
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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.
