F 250 2WD Super Duty V10-6.8L (2009)
If the vehicle is not equipped with a SDARS module, GO to V23.
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V22 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE SDARS MODULE
DISCONNECTED
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Disconnect: SDARS Module C2400.
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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 5,000 ohms?
Yes
CONNECT all modules. CONNECT the negative battery cable. GO to V32.
No
GO to V23.
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V23 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE HVAC MODULE
DISCONNECTED
-
Disconnect: HVAC Module C228a (EATC) or C2357a (EMTC).
-
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.
-
Are the resistances greater than 5,000 ohms?
Yes
CONNECT all modules. CONNECT the negative battery cable. GO to V33.
No
If the vehicle is equipped with a DSM, GO to V24.
If the vehicle is not equipped with a DSM, GO to V25.
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V24 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH THE DSM DISCONNECTED
-
Disconnect: DSM C341b.
-
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.
